Relevant bibliographies by topics / Polyaniline

Academic literature on the topic 'Polyaniline'

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Published: 4 June 2021
Last updated: 22 June 2024

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Journal articles on the topic "Polyaniline"

1

Suwanprateep, Sasikan, Rattachat Mongkolnavin, and Vimolvan Pimpan. "Synthesis of Polyaniline by Pulsed Plasma Polymerization Using Theta-Pinch Device." Advanced Materials Research 488-489 (March 2012): 950–54. http://dx.doi.org/10.4028/www.scientific.net/amr.488-489.950.

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Polyaniline was synthesized by pulsed plasma polymerization using a theta-pinch device. The process was done using oxygen plasma at a voltage of 20 kV, a pressure of 2 Pa and a discharging current of 125 kA. The number of the plasma shots was varied from 10, 15, 20, 25, to 30 shots. This parameter significantly affected the chemical structures of the synthesized polyanilines as revealed by FTIR spectra. While all synthesized polyaniline exhibited the characteristic peaks of quinoid ring and benzenoid group, the peaks corresponding to the formation of oxygen containing groups was found when high numbers of plasma shots were employed. This also caused the difference in UV-VIS absorption of these polyanilines. The highest conductivity of polyaniline was obtained when 20 shots of oxygen plasma were used. At this condition, polyaniline had a semi-crystalline structure and the thermal decomposition temperature at 262oC.
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Sljukic, Biljana, Darko Micic, Nikola Cvjeticanin, and Gordana Ciric-Marjanovic. "Nanostructured materials for sensing Pb(II) and Cd(II) ions: Manganese oxohydroxide versus carbonized polyanilines?" Journal of the Serbian Chemical Society 78, no. 11 (2013): 1717–27. http://dx.doi.org/10.2298/jsc130731101s.

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Nanostructured materials including three different carbonized polyanilines and manganese oxyhydroxide were prepared and evaluated as electrode materials for sensing of lead and cadmium ions in aqueous media. Anodic stripping voltammetry results indicated that all prepared materials could be successfully used for determination of these two heavy metal ions. Carbonized polyaniline-based electrodes have higher signal and lower limits of detection (10-7 ?) compared to manganese oxyhydroxide-based electrode. Among the three studied carbonized polyanilines, the one that was derived from polyaniline precursor produced in the presence of 3,5-dinitrosalicyclic acid showed the highest electrocatalytic activity towards the lead and cadmium oxidation.
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Rajender, Boddula, and Srinivasan Palaniappan. "Organic solvent soluble methyltriphenylphosphonium peroxodisulfate: a novel oxidant for the synthesis of polyaniline and the thus prepared polyaniline in high performance supercapacitors." New Journal of Chemistry 39, no. 7 (2015): 5382–88. http://dx.doi.org/10.1039/c5nj00979k.

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Ummami, Riza, Busroni Busroni, and Bambang Piluharto. "Synthesis and Characterization of Bacterial Cellulose-Polyaniline Composite with Variation of Dopant Concentration." BERKALA SAINSTEK 9, no. 2 (July 21, 2021): 69. http://dx.doi.org/10.19184/bst.v9i2.18120.

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Polyaniline is a type of conductive polymer. Bacterial cellulose has high mechanical properties, so it can be made into polyaniline base composite materials. A stable form of polyaniline oxidation at room temperature is emeraldine base. The emeraldine base has a conductivity value of 10-6 S/cm. Dopants can change the shape of emeraldine base to emeraldine salt by protonation process. Emeraldine salt is a conductive form of polyaniline. The conductivity value of emeraldine salt is 0,03-0,07 S/cm. The addition of dopan in synthesis of polymer was carried out to determine its effect on the conductivity value. The disadvantage of polyaniline is that its mechanical properties are weak and easily brittle. Modifications are needed to improve the mechanical properties of polyaniline, one of which is the manufacture of composite. Bacterial celluloce has high mechanical properties so it can be made into polyaniline base composite materials. Synthesis of bacterial cellulose-polyaniline composites by in situ chemical polymerization methods. Syntehsis is started with BC membrane was dipped into aniline solution for about 2h with stirring at room temperature. The BC was immersed into ammonium peroxydisulfate solution for about 30m with stirring. The bacterial cellulose-polyaniline compositions obtained are black color which is characteristic of the emeraldine salt. The highest conductivity value of composite was obtained from the addition of 3,5M HCl dopant which was 4,70x10-4 S/cm. FTIR analysis of composite obtained peak of the characteristic polyanilin was conductive at 1565,92 cm-1 as C=C quinoid ring and 1442,95 cm-1 as C=C benzoid ring.
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Janosevic, Aleksandra, Budimir Marjanovic, Aleksandra Rakic, and Gordana Ciric-Marjanovic. "Progress in conducting/semiconducting and redox-active oligomers and polymers of arylamines." Journal of the Serbian Chemical Society 78, no. 11 (2013): 1809–36. http://dx.doi.org/10.2298/jsc130809097j.

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Recent advances in synthesis, characterization and application of the selected conducting/semiconducting and redox-active oligomers and polymers of arylamines are reviewed. A brief historical background of the selected topics is given. The overview of the preparation, structure and properties of polyaniline, substituted polyanilines, especially those obtained by the oxidative polymerization of p-substituted anilines, poly(1-aminonaphthalene) and its derivatives, carbocyclic and heterocyclic polyaryldiamines such as poly(p-phenylenediamine) and polydiaminoacridines, is presented. The mechanism of formation of polyaniline nanostructures is discussed. Recent approaches to the preparation of one-dimensional polyaniline nanostructures are concisely reviewed, with special attention paid to the template-free falling-pH method. Current and potential future applications of oligo/polyarylamines are briefly discussed.
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Liu, Yu Wen, Jing Na Jiang, Wei Zhang, and Dong Xing Ma. "Study on Structure and Electrochemical Performance of LiFePO4/C Modified by PANI." Advanced Materials Research 512-515 (May 2012): 1079–82. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.1079.

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LiFePO4 has attracted broad attention as a promising cathode material for lithium ion batteries. The key issues related to LiFePO4 performance lie on the intrinsic characteristic of poor diffusion of lithium ions through an interface between LiFePO4 and FePO4. To explore the effect of polyaniline on performances, LiFePO4/C cathode materials were prepared via hydrothermal method, using glucose as a carbon source and polyaniline as a modifier. The samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), galvanostatic charge–discharge test and cyclicvoltammetry (CV). The results show that the olivine-type phase of LiFePO4/C is not changed by polyanilines and LiFePO4/C is composed of relatively large particles of about 400nm and some nano-sized polyaniline particles, which favor the electronic conductivity. The LiFePO4/C cathode material modified by 10% polyaniline has the highest uniformity. It delivers the capacity of 167.9mAh/g at 0.1C, and has good reversibility and high capacity retention.
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Xiao, Yaoming, Gaoyi Han, Yanping Li, Miaoyu Li, and Yunzhen Chang. "High performance of Pt-free dye-sensitized solar cells based on two-step electropolymerized polyaniline counter electrodes." J. Mater. Chem. A 2, no. 10 (2014): 3452–60. http://dx.doi.org/10.1039/c3ta14879c.

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Two-step cyclic voltammetry approach is employed to prepare polyaniline nanofibers, which supplies a quick and controllable method to obtain polyanilines with short-branched structure to increase the active surface area.
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Yuningsih, Lela Mukmilah, and Yusri Mutia Fauziyah. "Sintesis Komposit Polianilin-Karbon Aktif dari Tongkol Jagung sebagai Elektrolit Padat Pada Baterai." Jurnal Kimia VALENSI 4, no. 2 (November 30, 2018): 119–23. http://dx.doi.org/10.15408/jkv.v4i2.7390.

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The polyaniline-activated carbon composites are synthesized using aniline chemical oxidation polymerization methods as well as variations in carbonization temperature of 800 °C and 1000 °C. The polyaniline-activated carbon composites are characterized by their value of conductivity, functional groups, crystallinity, morphology, composition and electrical quantities by LCR-meter analysis, FTIR, XRD, SEM-EDX and digital multimeters. The conductivity value of composite polyanilin-activated carbon with carbonization temperature of 800°C and 1000 °C are 0.718 S/cm and 1.1003 S/cm. Polyaniline-activated carbon 800 composite and Polyaniline-activated carbon 1000 composite showed absorption bands acoording to PANI. The wave number that appear on PANI-activated carbon 800 composite and PANI-activated carbon 1000 peak is characteristic of PANI where the wave number 1562 cm-1, 1558 cm-1 is the vibration of the C = N and 1479 cm-1, 1475 cm-1is the vibration of the C = C with slacking off the degree of crystallinity PANI-activated carbon 800 i.e. 23.31% and PANI-activated Carbon 1000 i.e. 37.68%. Analysis of surface morphology and composite element content using SEM-EDX shows that particles of polianilin grows on active carbon fiber and free from impurity. The resulting voltage and current both PANI-Carbon 800 and PANI-carbon 1000 are 1.09 volt 19.74 mA and 1.15 Volts 19.98 mA.
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Robertson, Julia, James Dalton, Siouxsie Wiles, Marija Gizdavic-Nikolaidis, and Simon Swift. "The tuberculocidal activity of polyaniline and functionalised polyanilines." PeerJ 4 (December 20, 2016): e2795. http://dx.doi.org/10.7717/peerj.2795.

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Tuberculosis is considered a leading cause of death worldwide. More than 95% of cases and deaths occur in low- and middle-income countries. In resource-limited countries, hospitals often lack adequate facilities to manage and isolate patients with infectious tuberculosis (TB), relying instead on personal protective equipment, such as facemasks, to reduce nosocomial transmission of the disease. Facemasks impregnated with an antimicrobial agent may be a cost-effective way of adding an extra level of protection against the spread of TB by reducing the risk of disease transmission. Conducting polymers, such as polyaniline (PANI), and their functionalised derivatives are a novel class of antimicrobial agents with potential as non-leaching additives to provide contamination resistant surfaces. We have investigated the antimicrobial action of PANI and a functionalised derivative, poly-3-aminobenzoic acid (P3ABA), against mycobacteria and have determined the optimal treatment time and concentration to achieve significant knockdown ofMycobacterium smegmatisandMycobacterium tuberculosison an agar surface. Results indicated that P3ABA is a potential candidate for use as an anti-tuberculoid agent in facemasks to reduce TB transmission.
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Qiu, Han Xun, Xue Bing Han, Jing Li, Fei Long Qiu, and Jun He Yang. "Microwave Involved Synthesis of Graphene/Polyaniline Nanocomposite with Superior Electrochemical Performance." Journal of Nano Research 46 (March 2017): 212–24. http://dx.doi.org/10.4028/www.scientific.net/jnanor.46.212.

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A microwave irradiation involved process was applied to fabrication of graphene/polyaniline nanocomposite via in-situ polymerization of aniline monomers on graphene sheets. Structure and morphology of composites were characterized through scanning electron microscopy, Raman spectra, X-ray diffraction, Fourier transform infrared spectroscopy and X-ray photoelectron spectra. Electrochemical performances for energy storage applications were examined by cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge/discharge measurements. Owing to the homogeneous coating of polyanilline on the large surface of graphene, graphene/polyaniline composite-based electrode exhibits remarkably enhanced capacitive behavior with a specific capacitance of 429 F/g at 0.2 A g-1, a good cyclic stability and an excellent conducting behavior, which are much superior to those of individual components of composites. The improved electrochemical behavior of the composite resulting from the irradiation of microwave suggests the promising potentials for supercapacitors.
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Dissertations / Theses on the topic "Polyaniline"

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Smith, Jon Anthony. "Polyaniline Gold Nanocomposites." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4900.

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Polyaniline/Gold Nanocomposites J. Anthony Smith 141 Pages Directed by Dr. Ji and #345;?anata The expectation that it is possible to create a range of new materials from two basic components, polyaniline fibers and gold particles is explored. Three synthetic methods were employed each of which created different materials and required different investigation techniques. The methods are: chemical, one step aniline oxidation / AuCl4- reduction; electrochemical/chemical, a two-step composite growth achieved by electrochemical polyaniline thin film growth followed by film immersion in AuCl4- solution and spontaneous reduction to gold particles; electrochemical, resulting in freestanding polyaniline thin film/Au nanoparticles carried out by electrochemical stripping of a polyaniline thin film grown over a sacrificial gold layer in the presence halide solutions. The incorporation of particles was shown to affect film morphology and electrical properties in all synthetic methods. The changes are in large part attributed to the development of a contact potential between the polyaniline and the gold particles. Applications for the composites include use as chemically sensitive layers, corrosion inhibition materials, and use as probes to evaluate nanoparticle substrate interactions.
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Wang, Weining. "Electronic transport in polyaniline films and polyaniline/silicon heterostructure solar cellsWeining." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2008. http://wwwlib.umi.com/cr/syr/main.

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Abbas, Zaid Kahtan. "Intrinsically conducting polyaniline blends." Thesis, Kingston University, 2009. http://eprints.kingston.ac.uk/20400/.

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The project involved the production of, conductive polyanilines and their blending with elastomers to make new conducting' rubbers. Conductive elastomers already have commercial applications such as antistatic coatings, artificial muscles, sensors and electromagnetic screening. These have been based on carbon black or metal fillers, or more recently conducting polymer powders incorporated into natural or synthetic rubbers. A number of polyaniline-rubber blends have been reported in the literature. A key aim of this project was to improve the compatibility, mechanical, thermal stability and electrical properties of this type of blend through different mixing methods such as solution and thermo-mechanical with more systematic mixing procedures and better optimised mixing conditions. The first part of the work was to optimise the synthesis of conducting polyanilines (P Ani), polyanisidines (poAnis), and copolymers of the latter two, in the presence of a variety of protonating agents under a range of conditions, in order to study the influence of the synthetic conditions on the physical, chemical and morphological characteristics of the polymers. PAnilPoAnis products were prepared via solution polymerisation (simple oxidation at low pH) or via emulsion polymerisation using sulfonic acids (surfactants). Syntheses yielded the emeraldine salts (ES), which were either kept as such, or deprotonated using ammonia solution. There were noticeable differences in the behaviour of the two families of polymers. P Anis display better conductivity and a higher thermal stability than PoAnis due to their less hindered structure. These differences in physical characteristics tend to fade when the compounds are synthesised using a protonic surfactant such as dodecylbenzenesulfonic acid (DBSA). Here, the surfactant-induced order of the final polymeric particles becomes dominant over that of the pendant methoxy-group of PoAnis. Scanning electron microscopy (SEM) revealed the strong influence of the protonic acid used for the synthesis onthe shapes of the final particles. Hence, P Ani-DB SA has a monoclinic appearance and rhombic shape particles while P Ani-ß-naphthalenesulfonic acid (ß-NSA) has a "flakey" morphology. It was shown that a very small quantity of co-monomer could change drastically the physical characteristics of P Ani; hence, when anisidine (Anis) is added to the aniline-acid complex, a different crystalline structure is achieved. The chosen polymer (P Ani-DB SA) was matched with two individual elastomers, one based on an ethylene oxide co-polymer and the other on a nitrile butadiene co-polymer, both of which had suitable solubility parameters. The polymers were solution-blended and studied for compatibility by means of microscopy, electrical conductivity measurements and thermal analysis. Blends of poly (epichlorohydrin-co-ethylene oxide) rubber (Zeon Hydrin" C2000L) and polyaniline doped with dodecylbenzenesulfonic acid (P Ani-DB SA), containing different weight fractions of P Ani, were cast from solution. Solubility parameters for both P Ani¬DBSA and Hydrin® were calculated and found to be comparable, favouring some degree of miscibility. Conductive transparent films were formed by casting onto PTFE substrates. Conductivities of the cast films were found to be in the region of 10-7 Scm" for 1 wt% P Ani¬DBSA. Electrical conductivities increased with the proportion of P Ani-DB SA, showing a percolation threshold as low as I wt%, with highest conductivity achieved at, 50wt%. Decomposition steps of conductive blends were investigated using thermogravimetric analysis (TOA) and differential scanning calorimetry (DSC). The thermal stability of the blends was influenced by the ratio ofPAni-DBSA to Hydrin'". The effect of composition on the glass transition in the blends was determined using thermomechanical analysis (TMA). Thin films of the blends of dodecylbenzenesulfonic acid (DB SA) doped polyaniline (P Ani) and pure grade of Poly[(acrylonitrile-co-butadiene)/poly vinylchloride] (Zeon Nipol® DN171) were prepared via co-dissolution, at varying ratios of conducting filler (0.5-50)wt %. The electrical conductivity correlated with the concentration ofP Ani-DB SA. At a percolation threshold ofO.9% (wt/wt), an increase in electrical conductivity of approximately eight orders of magnitude was observed, with a recorded conductivity of 1.21xlO-4 S.cm-1 for the most conductive blend (consisting of 50wt% PAni). Characterisation by UV-visible spectroscopy indicated the retention of the doped state of the conductive P Ani-DB SA in each elastomer blend. Morphological studies by optical microscopy, showed the presence of P Ani-DB SA agglomerate networks (or interpenetrating networks) at higher concentrations; however, at lower concentrations of P Ani-DB SA, the dispersion and encapsulation of the conductive species was observed. Due to the double phase morphology of Nipol® DN 171, the encapsulating phenomenon was attributed to the presence of the thermoplastic (poly vinylchloride). Solubility parameter calculations confirmed the compatibility ofP Ani-DB SA with the constituents of the Nípol" DN171 elastomer. This was supported by the infrared spectrum, which shows the presence of functional groups specific to the reacting components of each blend. Thermal studies, performed by DSC and TOA, indicated an increased thermal stability with increasing concentration of the elastomer.
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Gill, Michael. "Polyaniline-silica colloidal nanocomposites." Thesis, University of Sussex, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239632.

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The work presented in this thesis provides a new route to a colloidal form of polyaniline, which uses colloidal silica as a dispersant. We obtained stable colloidal dispersions of polyaniline-silica composite particles with a 'raspberry' morphology. Compressed pellets of these particles exhibit solid-state conductivities of 1O-!_10-2 S crrr l, which is approximately 1-2 orders of magnitude lower than that of polyaniline bulk powder. This novel colloidal form of polyaniline has significantly improved processability compared to conventionally synthesised polyaniline. The synthesis and chemical characterisations are presented for various polyaniline-silica colloidal nanocomposites. The quantity of polyaniline incorporated into the nanocomposite particles can be controlled by varying the diameter of the silica dispersant, approximately 20% and 60 % polyaniline content being obtained using 120 nm and 10 nm diameter silica respectively. The average particle size ranges of nanocomposites was found to be 150 to 700 nm and 330 to 560 nm, as determined by transmission electron microscopy (TEM) and disc centrifuge photosedimentometry (DCP) respectively. The nanomorphology and surface composition of the polyanilinesilica particles were determined by small angle X-ray scattering (SAXS) and X-ray photoelectron spectroscopy (XPS) respectively. The average inter-particle separation distance of the silica particles within the polyaniline-silica raspberries was determined by SAXS to be 4 nm, a dimension equivalent to molecular polyaniline. The XPS data suggests that the surface of the particles is silica rich, this is consistant with their long term colloidal stability in 1.2 mole dm-3 HCl. The kinetics of polymerisation was studied using 1H NMR spectroscopy to monitor the disappearance of aniline monomer. Polymerisation rates during the synthesis of polyaniline-silica nanocomposites were appreciably faster than the corresponding precipitation polymerisations carried out in the absence of silica dispersants, due primarily to an increase in the second auto-catalytic step of the reaction. Rate constants were determined for both these types of synthesis; the values obtained for the precipitation polymerisations were in reasonably good agreement with literature values.
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Focke, Walter Wilhelm. "Conduction mechanisms in polyaniline." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/14642.

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Jonke, Alex P. "Atomic metal/polyaniline composites." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/49070.

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It is ideal to theoretically predict the activity of a catalyst. It has been recognized that not only the type of metal, but also its atomic size plays an important role in catalysis. In the past, atomic clusters have been created by sputtering from a sacrificial metal plate and then using a mass selector to choose cluster sizes from 1-233 atoms of gold. This approach has practical limitations. In this thesis, I describe a procedure by which atomic clusters of gold containing 1-8 atoms are deposited in polyaniline as an isolation matrix. My atomic deposition follows a cyclic pathway. Atomic clusters of palladium and atomic alloys of gold and palladium are also deposited in polyaniline using the same process. It is to show that this method will also work for other metals. These composite materials are characterized, and the catalytic activity for alcohol oxidation is evaluated. This thesis is divided into seven chapters. The first chapter discusses the chemistry of polyaniline for using gold and palladium as catalysts. The technique developed to deposit the atomic clusters is discussed in the second chapter. This technique deposits one atom of metal per imine site on polyaniline, per cycle. The cycle is repeated n-times until a cluster of specified size, Mn, and composition has been synthesized. It is known that polyaniline plays an important role in stabilization of the formed clusters which prevents their aggregation. The optimization of this technique is the topic of the third chapter along with the description of how these composite films are produced. To end this chapter, the composite films are characterized by cyclic voltammetry, Kelvin probe, and X-ray photoelectron spectroscopy. In chapters 4 and 5, the catalytic activity of the polyaniline/gold composites for the oxidation of alcohols in alkaline media using cyclic voltammetry is evaluated. In chapter 4, the correlation of the electrochemical activity for the oxidation of n-PrOH with the odd-even pattern from the calculated HOMO-LUMO gap energies for the same size clusters is shown. It is shown that the infrared spectrum of polyaniline with different sizes of atomic gold clusters also follows the odd-even pattern. Chapter 5 expands on the discussion of the catalytic oxidation of alcohols. The oxidation of methanol, ethanol, propanol, and butanol is surveyed. The peak currents are again dominated by the odd-even pattern. In chapter 6, the versatility of the atomic deposition cycle is shown by depositing atomic palladium clusters. The peak currents for the oxidation of n-PrOH by these palladium composite films again follows the predicted pattern of the calculated HOMO-LUMO gap energies for atomic palladium clusters. This chapter also explores bimetallic atomic clusters of gold and palladium. The results indicate that the catalytic activity depends on the orientation of the cluster in the polyaniline matrix. Chapter 7 discusses the oxidation of methanol, ethanol, and isopropanol on AunPd1 bimetallic atomic clusters. The addition of palladium in the cluster increases the peak current densities for the oxidation of both alcohols except for the most stable of the atomic gold clusters, while it inactivated the electrodes for isopropanol. The possible future work for this project is discussed in chapter 8. Overall, this thesis has developed a novel and unique technique for depositing atomic metal clusters into a polyaniline matrix. The technique is versatile enough to deposit atomic metal clusters other than gold, as shown by creating atomic palladium clusters and atomic bimetallic clusters of gold and palladium. This is extremely useful, since this single technique can produce many different types of atomic catalysts. The composite materials have been shown to be catalytically active for the oxidation of alcohols in alkaline media. This indicates a significant improvement to conserve precious metals while still retaining a high catalytic activity.
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Milton, A. J. "Structural properties of polyaniline films." Thesis, Durham University, 1993. http://etheses.dur.ac.uk/5548/.

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This thesis describes the experimental investigations of the structural properties of the conductive polymer, poly aniline. These studies have been performed on free-standing film samples, solution cast using the solvent N- methyl-2-pyrrolidinone (NMP). Such specimens have enabled a wealth of detailed information about polyaniline to be derived. The polymer itself was synthesised in the emeraldine base form using a chemical route optimised at Durham. The product was then assessed for its chemical structure and molecular weight using (^13)c NMR, elemental analysis and gel permeation chromatography. The process of fabricating the polymer into free-standing films is discussed and assessed. It has been shown that such films may be oriented by the application of uniaxial stress at elevated temperatures and this procedure has been described and analysed in detail. This stretching process aligns the polymer chains on a molecular level and hence produces changes in the physical properties of films. In particular, upon doping to the conducting emeraldine salt form by protonation in aqueous HCl, stretch oriented films display a remarkable increase in conductivity (parallel to the stretch direction) over their unstretched, doped counterparts. Various thermal analysis techniques, including dynamic mechanical thermal analysis, dielectric thermal analysis, thermomechanical analysis and infrared spectroscopy have been used to probe the physical properties of polyaniline films. Using these techniques a number of important thermal transitions have been observed and furthermore the stretch alignment process has been rationalised. Infrared orientational analysis has revealed detailed information about the molecular orientation produced during macroscopic stretching of a film. The type and degree of chain orientation has been analysed as well as the geometrical structure of a single chain. X-ray diffraction has probed the crystalline fraction of polyaniline films. Various aspects concerning the crystalline fraction of film samples has been derived along with an orientational analysis which has been contrasted with the infrared results. An even greater amount of structural information has been revealed by neutron diffraction and this technique has enabled a detailed examination of the structure of the crystalline phases of polyaniline to be made.
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Deng, Chengming. "Synthesis and Characterization of Polyaniline." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1603712965215724.

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Ginder, John Matthew. "Electronic defect states in polyaniline." The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu1343059710.

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Sebantu, Lambert. "Electrochemistry of polyaniline-DNA system." [Johnson City, Tenn. : East Tennessee State University], 2004. https://dc.etsu.edu/etd/895.

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Thesis (M.S.)--East Tennessee State University, 2004.
Title from electronic submission form. ETSU ETD database URN: etd-0331104-130134. Includes bibliographical references. Also available via Internet at the UMI web site.
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Books on the topic "Polyaniline"

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United States. National Aeronautics and Space Administration., ed. New anti-corrosive coatings with resin-bonded polyaniline and related electroactive groups: Final report, grant no. NAG10-0174. [Washington, DC: National Aeronautics and Space Administration, 1997.

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United States. National Aeronautics and Space Administration., ed. New anti-corrosive coatings with resin-bonded polyaniline and related electroactive groups: Final report, grant no. NAG10-0174. [Washington, DC: National Aeronautics and Space Administration, 1997.

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United States. National Aeronautics and Space Administration., ed. New anti-corrosive coatings with resin-bonded polyaniline and related electroactive groups: Final report, grant no. NAG10-0174. [Washington, DC: National Aeronautics and Space Administration, 1997.

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Rahman, Aminur, Al-Nakib Chowdhury, Takeo Ohsaka, and Mominul Islam. Trends in Polyaniline Research. Nova Science Publishers, Incorporated, 2013.

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Polyaniline Blends, Composites, and Nanocomposites. Elsevier, 2018. http://dx.doi.org/10.1016/c2015-0-06537-6.

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Visakh, P. M., Cristina Della Pina, and Ermelinda Falletta. Polyaniline Blends, Composites, and Nanocomposites. Elsevier Science & Technology Books, 2017.

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Pina, Cristina Della, and Ermelinda Falletta. Polyaniline: From Tradition to Innovation. Nova Science Publishers, Incorporated, 2014.

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Visakh, P. M., Cristina Della Pina, and Ermelinda Falletta. Polyaniline Blends, Composites, and Nanocomposites. Elsevier, 2017.

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Mozafari, Masoud, and Narendra Pal Singh Chauhan. Fundamentals and Emerging Applications of Polyaniline. Elsevier, 2019.

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Panigrahi, Muktikanta, and Arpan Kumar Nayak. Polyaniline based Composite for Gas Sensors. IOR PRESS, 2021. http://dx.doi.org/10.34256/ioriip212.

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In this research work, we have demonstrated the synthesis, spectroscopic characteristics, thermal behaviour and DC conductivity of a few nanostructured composites, substituted conducting polymers (ICPs) and composites of ICPs. The physical properties of aforementioned composites are significantly changed by the doping with HCl, H2SO4, HNO3, H3PO4, or acrylic acid. The charge transport properties of these polymeric materials have been studied in detail because of their potential application in gas sensors. In the current work, varieties of conducting polymer based materials such as PANI-ES/Cloisite 20A nanostructured composite, acrylic acid (AA) doped PANI polymer, N-substituted conducting polyaniline polymer, DL−PLA/PANI-ES composites, poly methyl methacrylate (PMMA) based polyaniline composite, and inorganic acid doped polyaniline are sucessfuly synthesized using aniline/aniline hydrochloride as precursors in acidic medium. Particularly, AA based synthesised PANI polymer was found with higher solubility The spectroscopic, thermal stability, enthalpy of fusion, room temperature DC conductivity and temperature dependent DC conductivity measurements with and without magnetic was carried out with as-synthesized materials. The FTR/ATR−FTIR spectra indicated the presence of different functional groups in the as-prepared composite materials. The UV−Visible absorption spectroscopic analysis showed the presence of polaron band suggesting PANI-ES form. The Room temperature DC conductivity, temperature variation DC conductivity (in presence and absence of magnetic field), and magnetoresistance (MR) of as-prepared conducting polyaniline based were analysed. The highest room temperature DC conductivity value was obtained from H2SO4 doped based composite materials and all prepared conductive composites were followed ohms law. The low temperature DC conductivity was carried out in order to study the semiconducting nature of prepared materials. The Mott type VRH model was found to be well fitted the conductivity data and described the density of states at the Fermi level which is constant in this temperature range. From MR plots, a negative MR was observed, which described the quantum interference effect on hopping conduction. We discuss different gas analytes i.e., NO2, LPG, H2, NH3, CH4, and CO of conducting polymer based materials.
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Book chapters on the topic "Polyaniline"

1

Farrell, Thomas P., and Richard B. Kaner. "Polyaniline." In Encyclopedia of Polymeric Nanomaterials, 1–11. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-36199-9_3-1.

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Kiristi, Melek, and Aysegul Uygun. "Polyaniline." In Handbook of Engineering and Specialty Thermoplastics, 183–210. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118229064.ch7.

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Farrell, Thomas P., and Richard B. Kaner. "Polyaniline." In Encyclopedia of Polymeric Nanomaterials, 1772–82. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-29648-2_3.

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Ćirić-Marjanović, Gordana. "Polyaniline Nanostructures." In Nanostructured Conductive Polymers, 19–98. Chichester, UK: John Wiley & Sons, Ltd, 2010. http://dx.doi.org/10.1002/9780470661338.ch2.

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Steiner, G., and C. Zimmerer. "Polyaniline (PANI)." In Polymer Solids and Polymer Melts – Definitions and Physical Properties I, 694–702. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32072-9_73.

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Theophilou, N., A. G. MacDiarmid, D. Djurado, J. E. Fischer, and A. J. Epstein. "Highly Conducting Polyanilines and Polyacetylene/Polyaniline Composites." In Springer Series in Solid-State Sciences, 29–33. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-83833-0_6.

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Wan, Mei Xiang, A. G. MacDiarmid, and A. J. Epstein. "Photoelectrochemistry of Polyaniline." In Springer Series in Solid-State Sciences, 216–22. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-83284-0_37.

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Lin, W. Z., H. Wang, T. S. Lai, D. Mo, Y. M. Ou, and K. C. Gong. "Femtosecond Exciton Dynamics in Polyaniline and Polyaniline-Polymethyl Mathacrylate." In Springer Series in Chemical Physics, 322–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-85176-6_116.

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Misra, S. C. K., N. N. Beladakere, S. S. Pandey, B. D. Malhotra, and Subhas Chandra. "Metal/Semiconducting Polyaniline Heterojunctions." In Frontiers of Polymer Research, 401–5. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-3856-1_41.

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Monkman, A. P., and D. Bloor. "Spectroscopic Investigation of Polyaniline." In Springer Series in Solid-State Sciences, 232–34. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-83284-0_40.

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Conference papers on the topic "Polyaniline"

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Haynes, A., and P. Gouma. "Nanoengineering Polyaniline for Advanced Chemosensing Applications." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-10310.

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The focus of this study is the development of polyaniline based hybrid systems for selective room temperature detection of NO2. The electrospinning technique has been employed to produce highly dispersed nanocomposites of leucoemeraldine base polyaniline (LEB-PANI) with cellulose acetate (CA) as a secondary component. The nanocomposites exhibit sensitivity and selectivity to NO2 down to 1 ppm with response time of 70s and recovery time of 155s. Spectroscopic analyses of the nanocomposites reveal that the molecular interactions between cellulose acetate and LEB-PANI yields enhanced sensitivity and selectivity to NO2. DC electrical resistance measurements of the composite during exposure to the analyte suggest that the response mechanism has some dependency on the humidity level in the gas chamber. This is found to be partly attributed to the byproduct of hydrolyzed CA: acetic acid. Infrared spectroscopy reveals that the acetate ions from the acid and polymer transforms base groups of LEB-PANI to higher oxidized states and affix to quinoid, benzenoid, and imine groups along polyaniline’s chain. These sites operate as additional reactions sites along the polymer backbone for increased ion mobility and aid in retaining the sensor’s stability and selectivity under varying gas atmospheres. This paper details the results from sensing experimentation and classical characterization techniques in an effort to develop a paradigm for chemical sensing with CA-PANI nanocomposites.
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Lin, Wei-Zhu, Hui Wang, Tian-Shu Lai, Dong Mo, Yang-Meng Ou, and Ke-Cheng Gong. "Femtosecond Exciton Dynamics in Polyaniline and Polyaniline-Polymethyl Mathacrylate." In International Conference on Ultrafast Phenomena. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/up.1994.md.20.

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Polyaniline (PAn) and derivatives have been again the subject of great interest owning to the larger nonlinearity, easy fabrication and its excellent stability under ambient condition in comparison with other families of conducting polymer. Photoinduced absorption and bleaching in PAn have been observed and attributed to the existence of localized molecular excitons and polaron pairs.[1,2] For nonlinear optical device applications, the dynamics of the nonlinearity response is the important aspect of the polymer properties which in PAn and derivatives, however, has not been investigated intensively. In this paper we report femtosecond absorption saturation studies on exciton dynamics in PAn and polyaniline-polyraethyl mathacrylate (PAn-PMMA) blend films for the first time. Time-resolved absorption traces show significant different excitonic dynamics in these two polymers. In PAn a initial ultra­fast absorption saturation recovery is observed. In PAn-PMMA pump-probe trace shows an efficient two-photon absorption. We present a brief discussion on these ultrafast phenomena and predict their potential applications in optics.
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Sharma, Bhupendra K., Babu Banothu, Neeraj Khare, Alka B. Garg, R. Mittal, and R. Mukhopadhyay. "Polyaniline∕ZnO Heterojunction." In SOLID STATE PHYSICS, PROCEEDINGS OF THE 55TH DAE SOLID STATE PHYSICS SYMPOSIUM 2010. AIP, 2011. http://dx.doi.org/10.1063/1.3606057.

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Ji Li, Jinzhu Mang, Yanghou Geng, Lixiang Wang, Xiabin Jing, and Fosong Wang. "Polyaniline electrolytic capacitor." In International Conference on Science and Technology of Synthetic Metals. IEEE, 1994. http://dx.doi.org/10.1109/stsm.1994.836029.

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Rebattet, L., M. Escoubes, M. Pineri, and E. M. Genies. "Gas sorptions in polyaniline powders and gas permeations in polyaniline films." In International Conference on Science and Technology of Synthetic Metals. IEEE, 1994. http://dx.doi.org/10.1109/stsm.1994.835632.

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Hai Jiang, Ji Li, Limang Wang, Xiabin Jing, and Fosong Wang. "Microporous films of polyaniline." In International Conference on Science and Technology of Synthetic Metals. IEEE, 1994. http://dx.doi.org/10.1109/stsm.1994.835280.

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Hidayat, Anjar Taufik, Ahmad Kusumaatmaja, Chotimah, R. Soekrisno, and Kuwat Triyana. "Effect of polyaniline polymerization methods on the preparation of electrospun polyaniline nanofiber." In TECHNOLOGIES AND MATERIALS FOR RENEWABLE ENERGY, ENVIRONMENT AND SUSTAINABILITY: TMREES. Author(s), 2016. http://dx.doi.org/10.1063/1.4958588.

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Liu, Xiaolu, Yang Liu, Kai Ren, Paul Lawson, Andrew Moening, Matthew Haubert, Yong X. Gan, et al. "Clean Energy Generation by a Nanostructured Biophotofuel Cell." In ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology collocated with the ASME 2013 Heat Transfer Summer Conference and the ASME 2013 7th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fuelcell2013-18261.

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In this paper, clean energy generation from hazardous materials by a nanostructured biophotofuel cell was studied. Specifically, electrodeposition of polyaniline on TiO2 nanotube as photoelectrochemical anode for a sodium sulfide fuel cell was performed. The photoelectrochemical response of the TiO2 nanotube capped by polyaniline nanoparticles was studied in UV and visible light illumination using sodium sulfide as the electrolyte. The polyaniline was added onto the top end of the nanotube via electrochemical deposition from 0.1 M aniline (C6H7N) in 1 M HCl solution. Polyaniline nanoparticle/TiO2 nanotube was made into an anode and put into 0.5 M sodium sulfide solution for photoelectrochemical response tests under both visible and ultraviolet light irradiation. The photoelectrochemical anode shows good photo-catalytic property, as evidenced by the open circuit potential changes when the illumination conditions were changed. Its response to ultraviolet light is much stronger than to visible light. It is also found that the higher the temperature of the sodium sulfide solution, the weaker the photo-catalytic response of the anode.
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Ballun, G., and G. Harsanyi. "Electropolymerisation and investigation of polyaniline." In 26th International Spring Seminar on Electronics Technology: Integrated Management of Electronic Materials Production, 2003. IEEE, 2003. http://dx.doi.org/10.1109/isse.2003.1260478.

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Zhang, Jiapeng, Liyong Jiao, Zhengjie Wu, Bo Li, and Bin Zhang. "Preparation of Copper / Polyaniline Nanocomposite." In 5th International Conference on Advanced Design and Manufacturing Engineering. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/icadme-15.2015.332.

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Reports on the topic "Polyaniline"

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Lin, Terri C. Conducting Polymer: Polyaniline. Office of Scientific and Technical Information (OSTI), March 2013. http://dx.doi.org/10.2172/1068957.

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Hopkins, A. R., R. A. Lipeles, and W. H. Kao. Electrically Conducting Polyaniline Microtube Blends. Fort Belvoir, VA: Defense Technical Information Center, August 2004. http://dx.doi.org/10.21236/ada427964.

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Kaner, Richard B. Polyaniline Membranes for Separation Applications. Fort Belvoir, VA: Defense Technical Information Center, November 1997. http://dx.doi.org/10.21236/ada337806.

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Schrer, E. M., A. G. MacDiarmid, S. K. Manohar, J. G. Masters, Y. Sun, X. Tang, M. A. Druy, P. J. Glatkowski, V. B. Cajipe, and J. E. Ficher. Polyaniline: Oriented Films and Fibers. Fort Belvoir, VA: Defense Technical Information Center, March 1991. http://dx.doi.org/10.21236/ada234414.

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Lin, Terri C. Development of a Conductive Coating with Polyaniline. Office of Scientific and Technical Information (OSTI), June 2013. http://dx.doi.org/10.2172/1082235.

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Yue, J., and A. J. Epstein. Proton Transport on Modified Sulfonated Polyaniline Electrodes. Fort Belvoir, VA: Defense Technical Information Center, June 1992. http://dx.doi.org/10.21236/ada254917.

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Wang, Z. H., A. J. Epstein, A. Ray, and A. G. MacDiarmid. Electron Localization in Polyaniline and its Derivatives. Fort Belvoir, VA: Defense Technical Information Center, March 1991. http://dx.doi.org/10.21236/ada233934.

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Yue, J., and A. J. Epstein. Electronic Control of pH at Sulfonated Polyaniline Electrodes. Fort Belvoir, VA: Defense Technical Information Center, July 1992. http://dx.doi.org/10.21236/ada260074.

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Ginder, J. M., A. J. Epstein, and A. G. MacDiarmid. Ring-Torsional Polarons in Polyaniline and Polyparaphenylene Sulfide. Fort Belvoir, VA: Defense Technical Information Center, March 1991. http://dx.doi.org/10.21236/ada234384.

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MacDiarmid, Alan G., S. K. Manohar, E. M. Scherr, X. Tang, and M. A. Druy. Polyaniline: Inter-Relationship between Ultra-Structure and Properties. Fort Belvoir, VA: Defense Technical Information Center, June 1991. http://dx.doi.org/10.21236/ada236993.

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