Bibliografías temáticas / Thiazine dyes

Literatura académica sobre el tema "Thiazine dyes"

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Publicado: 18 de mayo de 2024

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Artículos de revistas sobre el tema "Thiazine dyes"

1

Lee, Soo-Keun y Andrew Mills. "Luminescence ofLeuco-Thiazine Dyes". Journal of Fluorescence 13, n.º 5 (septiembre de 2003): 375–77. http://dx.doi.org/10.1023/a:1026341420942.

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Belov, Sergey y Grigoriy Naumchik. "The Application of Ozone to Reduce the Coloring Intensity of Aqueous Solutions of Dyes Used in the Textile Industry". E3S Web of Conferences 212 (2020): 01001. http://dx.doi.org/10.1051/e3sconf/202021201001.

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The article discusses the mechanisms of interaction of ozone with aqueous solutions of organic dyes. Two different dyes with different types of chromophore systemwere investigated: azo dye and thiazine dye. A detailed methodology for performing experimental studies makes it possible to accurately dose ozone into the reaction mixture. The data of experimental studies are presented indicating the effectiveness of the use of ozone for the destruction of dyes in aqueous solutions. The specific doses of ozone were established to reduce the color intensity of the studied dye solutions to standard values.
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3

Ahmed, S. y S. K. Saha. "Electrochemical study of the reaction between progressively alkylated thiazine leucodyes and Fe(III) on a glassy carbon electrode". Canadian Journal of Chemistry 74, n.º 10 (1 de octubre de 1996): 1896–902. http://dx.doi.org/10.1139/v96-213.

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An electrochemical investigation on five progressively alkylated thiazine dyes in the presence of Fe(III) ions is reported. The theory of the catalytic regeneration mechanism involving an electrode reaction followed by a coupled chemical reaction is applied to derive kinetic parameters of homogeneous reaction. The second-order rate constant for the reaction of thiazine leucodyes with Fe(III) ions was found to increase from 0.25 × 104 to 1.6 × 104 dm3 mol−1 s−1 upon monomethylation and to vary from 0.7 × 104 for the dimethyl derivative to 1.4 × 104 dm3mol−1 s−1 for the tetramethyl one. The electron-donating nature as well as the hydrophobic characteristics of the methyl group influence the kinetics of the homogeneous reaction. Key words: cyclic voltammetry, thiazine dyes, ferric ion, catalytic regeneration, kinetics
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4

Chauhan, Ratna, Reena Kushwaha y Lal Bahadur. "Study of Light Harvesting Properties of Different Classes of Metal-Free Organic Dyes in TiO2Based Dye-Sensitized Solar Cells". Journal of Energy 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/517574.

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In dye-sensitized solar cells, the photosensitization of TiO2thin film semiconductor was accomplished by using different classes of metal-free (fluorone, triarymethane, azo and thiazine based) organic dyes as photosensitizer. The broad electronic absorption spectra of these dyes have been obtained in the visible region due to the presence of chromophoric groups in these dyes. The contribution of these dyes as light harvesting species is seen from the photocurrent action spectrum of the cell. Here, we report the sensitization activity of these dyes in terms of current-potential curve, open-circuit potential, fill factor, IPCE, and overall solar energy conversion efficiency which have been evaluated under 100 mW/cm2light intensity. The results suggest that dyes based on fluorone and azo groups are promising candidates for high performance, dye-sensitized solar cells because of better anchoring groups (–COOH, –OH, and –SO3-) present in these dyes. Better anchorage of dyes to the surface of TiO2semiconductor helps in charge transfer phenomenon.
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5

Chen, Shui-Lin, Rolf M. Rohner y Heinrich Zollinger. "Influence of Dye Size and Fiber Porosity on the Dyeing Kinetics and Time Lags in the Uptake of Cationic Dyes on Acrylic Fibers". Textile Research Journal 58, n.º 5 (mayo de 1988): 247–54. http://dx.doi.org/10.1177/004051758805800501.

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The uptake curves of cationic thiazine dyes (based on thionine) and four other cationic dyes were determined for a series of acrylic fibers, consisting of the same polymer but varying porosities. The apparent diffusion coefficients ( Dapp) and the time lag of the dye uptake (Δ t) were calculated. Dapp and Δ t are functions of the size of the dye cations, the porosity of the fiber, and at least one other factor. We detected an influence of the glass transition temperature under dyeing conditions on the time lag, which was not found before for these or any other fibers.
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6

Bongard, R. D., M. P. Merker, R. Shundo, Y. Okamoto, D. L. Roerig, J. H. Linehan y C. A. Dawson. "Reduction of thiazine dyes by bovine pulmonary arterial endothelial cells in culture". American Journal of Physiology-Lung Cellular and Molecular Physiology 269, n.º 1 (1 de julio de 1995): L78—L84. http://dx.doi.org/10.1152/ajplung.1995.269.1.l78.

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The uptake of methylene blue (MB), and toluidine blue O (TBO) by bovine pulmonary arterial endothelial cells grown on microcarrier beads was detected as a decrease in the concentration of dye in the medium after these thiazine dyes were added to the medium surrounding the cells. Because the reduced forms of these dyes are much more lipophilic than the oxidized forms, we considered the possibility that reduction of the dyes at the cell surface might have preceded the uptake by the cells. Therefore, we studied the ability of the cells to reduce a toluidine blue O-polyacrylamide polymer (TBOP), which was too large to enter the cells in either the oxidized or reduced form. The TBO moieties of the polymer were reduced by the cells, indicating that the dyes did not have to enter the cells to be reduced and that reduction can occur at, or near, the cell surface. The rate of TBOP reduction was about the same as the rate of uptake of the monomeric dyes, indicating that the cell surface reduction mechanism had a sufficient capacity to account for the monomer uptake by the cells. We also found that ferricyanide ion, which also did not permeate the cells, was reduced by the cells and that external ferricyanide inhibited the monomeric MB uptake. Thus the results with ferricyanide were also consistent with the concept that the monomeric thiazine dyes are reduced at the cell surface before the more lipophilic reduced forms are taken up by the endothelial cells.
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7

Krishnan, K. Gokula, V. Saravanan, C. Udhaya Kumar y C. Ramalingan. "Fused Thiazine Tethered Metal-Free Dyes for Dye Sensitized Solar Cells: A Computational Investigation". Asian Journal of Chemistry 33, n.º 10 (2021): 2373–78. http://dx.doi.org/10.14233/ajchem.2021.23340.

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Three novel cyanoacetamide decorated phenothiazines (1a-c) have been designed. Structural and photo-physical properties of the molecules 1a-c have been investigated. To better realize the charge transport process involved in the dye-sensitized solar cells (DSSCs), computational studies have been performed using B3LYP and CAM-B3LYP method for the dyes 1a-c. Theoretical findings for DSSCs include LHE (light-harvesting efficiency) and driving forces such as electron injection (ΔGinject) and dye regeneration have been calculated to envisage the most appropriate dyes for the application of DSSC.
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8

Sadigh, Mahsa Khadem y Mohammad Sadegh Zakerhamidi. "The Roles of Solute-Solute and Solute-Solvent Interactions on the Nonlinearity of Aqueous Solutions of Ionic Dyes". Zeitschrift für Naturforschung A 73, n.º 9 (25 de septiembre de 2018): 785–94. http://dx.doi.org/10.1515/zna-2018-0154.

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AbstractIn this paper, the roles of intermolecular interactions and probability of aggregates formation on the nonlinear optical properties of thiazine dyes are investigated. Our results show that saturable and reverse saturable absorption properties of these dyes depend strongly on the molecular surrounding media characteristics and their collective properties that tend to form aggregated species at high concentrations. Depending on molecular surrounding media characteristics, by increasing the concentration of dye solutions and formation of aggregates, the strong solute-solute interactions can modify the nonlinear responses of dye solutions. The experimental results indicate that by increasing the contribution of J aggregates, the third-order nonlinear responses of binary mixtures of water and ethanol are increased at room temperature. Therefore, the intermolecular interactions and the presence of J aggregates can be considered as simple techniques for improving the nonlinear responses of selected ionic dyes.
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9

Vara, Jimena y Cristina S. Ortiz. "Thiazine dyes: Evaluation of monomeric and aggregate forms". Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 166 (septiembre de 2016): 112–20. http://dx.doi.org/10.1016/j.saa.2016.05.005.

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10

Chakraborty, Amitabha, Shamsuzzaman Ahamed, Subrata Pal y Swapan K. Saha. "Cyclic Voltammetric Investigations of Thiazine Dyes on Modified Electrodes". ISRN Electrochemistry 2013 (12 de febrero de 2013): 1–7. http://dx.doi.org/10.1155/2013/959128.

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Electrochemical behavior of five progressively alkylated thiazine dyes has been investigated at glassy carbon/montmorillonite and glassy carbon/zeolite electrodes. Quantitative characteristics, associated with the positions of peak potentials (Ea and Ec) and current ratios (ia/ic), are measured with scan rates. The peak current observed in the modified electrodes is dependent on both the porosity and nature and number of sites involved in partitioning the complex into film. The values of diffusion coefficient for different dyes have been calculated from electrochemical data. It is suggested that in clay-modified electrode along with physical diffusion the process of electron hopping seems to be most likely.
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Tesis sobre el tema "Thiazine dyes"

1

Sunwar, Chandra Bahadur. "Interaction of some thiazine dyes with clay minerals". Thesis, University of North Bengal, 1985. http://hdl.handle.net/123456789/847.

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Pal, Subrata. "Studies on physico - chemical characteristics of progressively alkylated thiazine dyes and their interaction with montmorillonite". Thesis, University of North Bengal, 1992. http://hdl.handle.net/123456789/715.

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3

Bose, Himangshu Sekhar. "Metachromatic behaviour of some thiazine dyes in solution in presence of inorganic and organic electrolytes, surfactants, polyelectrolytes and clay minerals". Thesis, University of North Bengal, 1986. http://hdl.handle.net/123456789/731.

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Congdon, Erin Elizabeth. "Insights into the mechanism of Tau polymerization and the effects of small molecules". The Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=osu1185397658.

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葉慶偉. "Synthesis of monoazo thiazole disperse dyes". Thesis, 1986. http://ndltd.ncl.edu.tw/handle/47153164538243509509.

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6

Liu, S. S. y 劉新新. "Synthesis and dyeing properties of Thiazole dyes". Thesis, 2000. http://ndltd.ncl.edu.tw/handle/15298565427743601584.

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碩士
國立臺灣科技大學
纖維及高分子工程研究所
88
ABSTRACT The investigations of this study were using thiourea and 1,3-disubstituted thiourea by the reaction with monochloro acetic acid or ethyl chloroacetate in alcohol to give thiazolone derivatives；and were using thiourea with chloro acetonitrile in alcohol to yield 2,4-diimino-1,3-thiazole intermediates. Then used aldehyde and diazonium salt with it to prepare methines and azo compounds, which are yellow — reddish brown in colour. Besides the compounds of 2- Imino-5-(4-substituted-benzylidene)-thiazolidin-4-one (7) were difficult to dye PET fabrics, and 2-Acetylimino-5-(4-substituted-benzylidene)-thiazolidin-4-one (10) their light & sublimation fastness were 3 and 3-4 grade, the other dyes the fastness all above 4 grade ,adapted to dye PET fabrics. In order to deep the colour , try using Vilsmeier reagent with 2-imino-thiazolone and using alkyl-acetoacetate with 2,4-diimino-thiazole to form conjugate thiazole and thiazole -pyridine ring ,further reacted with diazonium compounds to get azo dyes：2-(4-Diethylamino-phenyl azo)-7-substituted-thiazolo【4,5-b】pyridin-5-one (15) and 2-(4-Diethylamino-phenyl azo)-4-chloro-thiazole-5-carbaldehyde (16) , which are blue — purple in colour .Their light & sublimation fastness were above the range of 4-5 grade , and bright colored , are good dyestuffs to dye PET fabrics. Further used amine group with (16) to prepare schiff‘s base bridge compounds：2-(4-Diethylamino-phenyl azo)-4-chloro-5-(4-chloro-5-substituted-benzylidene amino) thia- zole (17) ,which λmax are longer 5-10 nm , molar absorptivity (ε) are raiser 2 —3 times than (16) .The light & sublimation fastness were the same as (16) ,the colour still brighted, are good disperse dyestuffs to dye PET fabrics.
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7

YI, WU SHAN y 吳珊儀. "Synthesis and Dyeing Properties of Nonazo thiazole Dyes". Thesis, 1999. http://ndltd.ncl.edu.tw/handle/66262378701374278486.

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碩士
國立臺灣科技大學
纖維及高分子工程研究所
87
The reaction of mecraptoacetic acid with appropriate cyano compounds in the pyridine to yield the corresponding 4-oxo-4,5-dihydro-2-(1-methylene-substitufed)-1,3-thiazole intermediates, which can be reaction with some aldehyde compounds in the presence of piperidine to afford a series of yellow to orange 4-hydroxy-[1-arylidene (or hetarylidene)-1-substitufed]-1,3-thiazole dyes.The molecule structure of all compounds were confirmed by elemental analyes and spectral methods (UV,IR,MS, and 1NMR).These dyes were applied to polyester and nylon ; and their dyeing properties were investigated.
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8

He, Ming Jin y 何明進. "Synthesis and dyeing properties of thiazole azo dyes". Thesis, 1996. http://ndltd.ncl.edu.tw/handle/34206588455582380134.

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He, Ming-Jin y 何明進. "Synthesis and Dyeing Properties of Thiazole Azo Dyes". Thesis, 1996. http://ndltd.ncl.edu.tw/handle/78377944903851339221.

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10

Yang, Ming-Ruei y 楊明叡. "Preparation and characterization of silica hybridized with thiazole containing active group dyes". Thesis, 2013. http://ndltd.ncl.edu.tw/handle/11265027613141481610.

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碩士
崑山科技大學
材料工程研究所
101
A series of some novel hybrid materials prepared via sol-gel process has been synthesized from silica and thiazole containing active group azo dyes. The start material thiazole was synthesized from acetophenone, thiourea and iodide to get a thiazole containing active group. The thiazole containing active group regards as diazo component were coupled with N,N-dimethyl aniline as coupling component at ice bath, to give the heteroaryl thiazole containing active group azo dyes. Tetraethoxysilane and methyltrimethoxysilane hybridized respectively with thiazole containing active group dyes were synthesized via sol-gel process with precursor system. Alternatively, the thiazole containing active group azo dyes processed with hydrolysis-condensation reaction by tetraethoxysilane and methyltrimethoxysilane combined with vinyltriethoxysilane in appropriate proportion under catalyst. The structures of these hybrid materials and morphology of processed fabrics were carried out by FT-IR, 1H-NMR, 29Si-NMR, EDS and SEM analysis. The water repellent properties and characteristics of dyed PTT and PET fabrics were evaluated.
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Capítulos de libros sobre el tema "Thiazine dyes"

1

Van Thien, Tran. "Thiazine, Oxazine, and Phenazine Leuco Dyes". En Chemistry and Applications of Leuco Dyes, 67–95. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/0-306-46906-5_3.

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Bolton, R. "Phenazine, oxazine, thiazine and sulfur dyes". En Second Supplements to the 2nd Edition of Rodd's Chemistry of Carbon Compounds, 173–201. Elsevier, 1991. http://dx.doi.org/10.1016/b978-044453347-0.50381-5.

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"A COMPARATIVE STUDY OF METCHROMASY INDUCED BY THIAZINE DYES". En Micro- and Nanostructured Polymer Systems, 309–22. Apple Academic Press, 2016. http://dx.doi.org/10.1201/b19859-22.

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Actas de conferencias sobre el tema "Thiazine dyes"

1

Cheng, Jianqun, Ke Chen, Yan Wang y Mingju Huang. "Comparison of high-density holographic characteristics of photopolymers sensitized by two kinds of thiazine dyes". En Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage, editado por Fuxi Gan. SPIE, 2008. http://dx.doi.org/10.1117/12.822045.

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Zhang, Weiyi, Gang Zhou y Zhong-Sheng Wang. "Thiazolo[5,4-d]thiazole-Based Organic Dyes for Quasi-Solid-State Dye-Sensitized Solar Cells". En Advanced Optoelectronics for Energy and Environment. Washington, D.C.: OSA, 2013. http://dx.doi.org/10.1364/aoee.2013.asa3a.12.

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Massey, Melissa y W. Russ Algar. "Evaluation of thiazole intercalating dyes as acceptors for quantum dot donors in Förster resonance energy transfer". En SPIE Sensing Technology + Applications, editado por Brian M. Cullum y Eric S. McLamore. SPIE, 2014. http://dx.doi.org/10.1117/12.2053165.

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Ienco, Andrea, Lorenzo Zani, Gianna Reginato, Massimo Calamante, Alessandro Mordini, Cosimo Fortunato y Marina Mazzoni. "Plasmonic Au nanoparticles for thin thiazole-based cheap-and-safe dye-sensitized solar cells (DSSC)". En Optical Instrumentation for Energy and Environmental Applications. Washington, D.C.: OSA, 2014. http://dx.doi.org/10.1364/e2.2014.jw6a.16.

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