Log in

Relevant bibliographies by topics / Dibutylamine / Journal articles

To see the other types of publications on this topic, follow the link: Dibutylamine.

Journal articles on the topic 'Dibutylamine'

Author: Grafiati

Published: 29 June 2021

Last updated: 9 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Dibutylamine.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Ji, Wen Jin, Wei Song, Yu Ying Zheng, and Xiang Zhu He. "Improvement of Method for Determination of Isocyanate Group Content in Polyurethane Prepolymer." Applied Mechanics and Materials 303-306 (February 2013): 2533–36. http://dx.doi.org/10.4028/www.scientific.net/amm.303-306.2533.

Full text

Abstract:

This paper represents the improvement of method for determination of isocyanate group content in polyurethane prepolymer. Acetone-dibutylamine method and toluene-dibutylamine method were used separately to determine the isocyanate group content in polyurethane prepolymer. The –NCO content tested by the two methods were close. In the former method, 15-20 mL acetone was used as solvent and the titration end point was easy to confirm. While in the latter method, additional solvent (isopropanol) was used which causes environmental contamination.

APA, Harvard, Vancouver, ISO, and other styles

2

Brittle, Stuart A., Tim H. Richardson, Lisa Varley, and Chris A. Hunter. "Amine-sensing properties of a covalently linked calix[4]arene–porphyrin ("calixporph") multilayered film." Journal of Porphyrins and Phthalocyanines 14, no. 12 (December 2010): 1027–33. http://dx.doi.org/10.1142/s1088424610002859.

Full text

Abstract:

Four zinc porphyrin molecules have been linked covalently to a central amphiphilic calix[4]arene molecule to form a zinc "calixporph", ZnCP , which displays enhanced sensitivity to dibutylamine compared to both the discrete zinc porphyrin and two-component mixtures of zinc porphyrin with calixarene. Langmuir-Blodgett films (20 monolayers) of ZnCP display UV-visible spectra which are modified upon exposure to dibutylamine in the concentration range 0.09–0.45 ppt (in N2 ) with a t50 response time of 8.8 s. The dense packing of the monomeric porphyrin moieties leads to a high absorbance per layer and thus a large sensing signal compared to other LB films capable of amine-detection. This, coupled to the very fast t50 value, leads to a high figure of merit. This verifies the adopted strategy of using a covalently linked calixporph in order to avoid the potential problems of phase separation associated with two-component mixtures. Furthermore, the ZnCP is selectively responsive to the secondary amine, dibutylamine, compared to the primary and tertiary compounds.

APA, Harvard, Vancouver, ISO, and other styles

3

King, James F., Manjinder S. Gill, and Petru Ciubotaru. "Benzenesulfonyl chloride with primary and secondary amines in aqueous media Unexpected high conversions to sulfonamides at high pH." Canadian Journal of Chemistry 83, no. 9 (September 1, 2005): 1525–35. http://dx.doi.org/10.1139/v05-154.

Full text

Abstract:

We have determined pHyield profiles under pseudo-first-order conditions of the reactions of benzenesulfonyl chloride with a set of primary and secondary water-soluble alkylamines, and have found with certain amines, such as dibutylamine, a profile taking the form of a sigmoid pH&#150yield curve with relatively high yields of the sulfonamide persisting with increasing basicity up to and including 1.0 mol/L sodium hydroxide. This behaviour is quantitatively accounted for by invoking, in addition to the usual second-order reaction of the sulfonyl chloride with the amine, two third-order terms (i) one first-order in sulfonyl chloride, amine and hydroxide anion, and (ii) another first-order in sulfonyl chloride and second-order in the amine. The importance of the third-order terms correlates approximately with the total number of alkyl carbon atoms in the amine, and this in turn is regarded as related to the hydrophobic character of the amine. Experiments to test this picture included: (i) observation of a bell-shaped curve with bis(2-methoxyethyl)amine, (ii) in the reaction of dibutylamine in THF&#150H2O (1:1), and also (iii) in the reaction of dibutylamine in 1.0 mol/L tetrabutylammonium bromide, and (iv) increase in the contributions of the third-order terms in 1.0 mol/L aqueous sodium chloride. Preparative reactions with dibutylamine, 1-octylamine, and hexamethylenimine in 1.0 mol/L aqueous sodium hydroxide with a 5% excess of benzenesulfonyl chloride gave, respectively, 94%, 98%, and 97% yields of the corresponding sulfonamides. Key words: sulfonyl chlorides, primary and secondary amines, pHyield profiles, organic synthesis in water, hydrophobic effects.

APA, Harvard, Vancouver, ISO, and other styles

4

Djudjic, Radana, and Branka Rodic-Grabovac. "Synthesis of dialkylaminocarbonyl N-chloro- carbonyl-N-phenyl-4-aminobenzo-(-pyrone derivatives." Acta Periodica Technologica, no. 35 (2004): 187–91. http://dx.doi.org/10.2298/apt0435187d.

Full text

Abstract:

The title compounds were prepared by condensation of N-chlorocarbonyl-N-phenyl-4-aminobenzo-(-pyrone with diethylamine dibutylamine and isopropylamine. The starting compound used for condensation with amines was obtained by a reaction of N-phenyl-4-aminobenzo-(-pyrone with oxalyl chloride.

APA, Harvard, Vancouver, ISO, and other styles

5

Sun, Yue, Weisheng Zheng, and Deqiang Yin. "Removal of 2-naphthalenesulfonic acid using novel dual functional weakly basic anion exchange resins from aqueous solution." Adsorption Science & Technology 37, no. 3-4 (January 18, 2019): 260–73. http://dx.doi.org/10.1177/0263617418824809.

Full text

Abstract:

Two novel weakly basic anion exchange resins BNH and BN2 bearing two different functional groups was fabricated via the two-step amination of chloromethylated polystyrene-divinylbenzene beads with dibutylamine and dimethylamine. The adsorption properties of BNH and BN2 for the 2-naphthalenesulfonic acid (NSA) removal from wastewater were compared with two synthesized monofunctional anion exchange resins BN0 and BN6 (derived from dimethylamine and dibutylamine, respectively). The experimental data revealed that the adsorption process on the four resins fitted well with the pseudo-second-order kinetics equation and the equilibrium isotherms were in good agreement with the Langmuir model. Thermodynamic analyses illustrated that 2-naphthalenesulfonic acid adsorption onto resins was an endothermic and spontaneous process. Importantly, BN2 still displayed relatively high adsorption capacity in the existence of Na2SO4, indicative of an excellent selectivity for 2-naphthalenesulfonic acid over sulfate than other resins. The obtained results elucidate that BN2 could have potential industrial application in effluent disposal fields because of its superior selectivity, acceptable kinetics, and desorption capability.

APA, Harvard, Vancouver, ISO, and other styles

6

Kalla, Reddi Mohan Naidu, Mi Ri Kim, and Il Kim. "Dibutylamine-catalysed efficient one-pot synthesis of biologically potent pyrans." Tetrahedron Letters 56, no. 5 (January 2015): 717–20. http://dx.doi.org/10.1016/j.tetlet.2014.12.079.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Jing, Guohua, Fan Liu, Bihong Lv, Xiaobin Zhou, and Zuoming Zhou. "Novel Ternary Absorbent: Dibutylamine Aqueous–Organic Solution for CO2 Capture." Energy & Fuels 31, no. 11 (October 27, 2017): 12530–39. http://dx.doi.org/10.1021/acs.energyfuels.7b02382.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Gomes, Ana T. P. C., Patrícia C. Freire, Catarina R. M. Domingos, Maria G. P. M. S. Neves, José A. S. Cavaleiro, Filipe A. Almeida Paz, Jorge A. Saraiva, and Augusto C. Tomé. "Synthesis under high hydrostatic pressure — a new method to prepare 5,10,15,20-tetrakis[4-(substituted amino)-2,3,5,6-tetrafluorophenyl]porphyrins." Journal of Porphyrins and Phthalocyanines 20, no. 08n11 (August 2016): 1377–89. http://dx.doi.org/10.1142/s108842461650111x.

Full text

Abstract:

5,10,15,20-Tetrakis(pentafluorophenyl)porphyrin reacts with primary alkylamines and heterocyclic amines, at 50°C and under high pressure (450 MPa), to produce the [Formula: see text]-substituted tetraamino derivatives in high yields. Under similar conditions, the reaction with the bulky dibutylamine and dipentylamine affords the corresponding mono-substituted dialkylaminoporphyrins in 10% yield. This new protocol arises as a considerable improvement of the methods already known, which usually require high temperatures and are not effective when using secondary amines having long alkyl groups.

APA, Harvard, Vancouver, ISO, and other styles

9

Horálek, Jiří, Emil Krejcar, and Jaroslav Churáček. "Addition of secondary amino group to double bond of acrylates." Collection of Czechoslovak Chemical Communications 53, no. 4 (1988): 833–38. http://dx.doi.org/10.1135/cccc19880833.

Full text

Abstract:

The near IR region spectroscopy has been used to follow the addition reactions of the secondary amino groups of the tert-butyl 3-butylaminopropanoate, N,N'-dibutyl-3-aminopropanamide, and dibutylamine to tert-butyl acrylate. The additions are bimolecular reactions of the second order. The respective rate constants found for the above-mentioned compounds are 3·54 . 10-6, 2·34 . 10-5, and 3·18 . 10-6 l mol-1 s-1. The secondary amidic groups increase the nucleophilicity of secondary amino group and hence also the rate of the addition reaction.

APA, Harvard, Vancouver, ISO, and other styles

10

Fiddler, Walter, and Robert C. Doerr. "Gas Chromatographic/Chemiluminescence Detection (Thermal Energy Analyzer-Nitrogen Mode) Method for the Determination of Dibutylamine in Hams." Journal of AOAC INTERNATIONAL 76, no. 3 (May 1, 1993): 578–81. http://dx.doi.org/10.1093/jaoac/76.3.578.

Full text

Abstract:

Abstract A gas chromatographic (GC) procedure is described for the determination of dibutylamine (DBA) in ham at less than 1 ppm. Sample is extracted with 0.5N HCI, centrifuged, made basic, and then extracted with isopropyl alcohol. Final determination is by GC/thermal energy analysis in the nitrogen mode. Six replicate analyses of ham fortified with 0.5 ppm DBA gave a recovery of 90.2 ± 3.4%. Over a range of 0.5 to 3.0 ppm DBA, the repeatability was 0.07 ppm, and the coefficient of variation was 6.07%. Limit of detection was 01 ppm. Effectiveness of the procedure was demonstrated on selected ham samples.

APA, Harvard, Vancouver, ISO, and other styles

11

Letcher, T. M., U. Domańska, and P. Govender. "The excess volumes of (dibutylamine + an ether) at the temperature 298.15 K." Journal of Chemical Thermodynamics 26, no. 9 (September 1994): 1019–23. http://dx.doi.org/10.1006/jcht.1994.1119.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Spadavecchia, Jolanda, Giuseppe Ciccarella, Alessandro Buccolieri, Giuseppe Vasapollo, and Roberto Rella. "Synthesis of tailored phthalocyanines and their application as spin coated films in volatile organic compound detection." Journal of Porphyrins and Phthalocyanines 07, no. 08 (August 2003): 572–78. http://dx.doi.org/10.1142/s1088424603000720.

Full text

Abstract:

29H,31H-(2,4-di-t-amylphenoxy)phthalocyanine, Zn (II) tetra-4-(2,4-di-t-amylphenoxy) phthalocyanine and Zn (II) tris-(2,4-di-t-amylphenoxy)-[4-(4-mercapto-phenyliminomethyl)- phenoxy]phthalocyanine were synthesized and their molecular structures were confirmed by LC-MS, 1 H NMR, FT-IR and UV-vis spectra. Spin coated layers of these phthalocyanines have been used as optochemically interactive materials for volatile organic compounds detection in the UV-vis spectral range. The results show a good sensitivity and selectivity depending on both the metal and the peripheral substituents. Optical sensitivity towards tert-butylamine, diethylamine, dibutylamine, 2-butanone and acetic acid has been monitored.

APA, Harvard, Vancouver, ISO, and other styles

13

Airoldi, Luisa, Roberta Pastorelli, Alessandra Macrí, Marina Bonfanti, and Roberto Fanelli. "Effect of butylated hydroxyanisole on in vitro and in vivo nitrosation of dibutylamine." Toxicology 43, no. 2 (February 1987): 217–25. http://dx.doi.org/10.1016/0300-483x(87)90011-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Kumari, Kavitha, and Sanjeev Maken. "Optical Properties, Excess Volume Prediction from Refractive Index and Intermolecular Interactions in Dibutylamine + Isomeric Butanol." Asian Journal of Chemistry 33, no. 6 (2021): 1287–93. http://dx.doi.org/10.14233/ajchem.2021.23000.

Full text

Abstract:

The alkyl or alkanol amines are widely used as absorbent for CO2 capture owing to interaction between amines and CO2. In order to increase the CO2 loading in amine based absorbents, blending of amine with alkanol may be one option. As thermophysical properties of of utmost importance in designing, in present work, the refractive index of dibutylamine (DBA) and isomeric butanol as well as their binary mixtures at 298.15 K to 308.15 K were measured. The Δn are found positive for DBA + isomeric butanol mixtures. The Δn values were correlated with Redlich-Kister polynomial. The refractive index data were also predicted by various correlations and results were expressed in terms of standard deviation. The Δn values were also employed to calculate the excess molar volume of the present binary mixtures. Further Δn data analysed in terms of intermolecular interaction among DBA (1) + isomeric butanol (2) mixtures.

APA, Harvard, Vancouver, ISO, and other styles

15

Suslov, D. S., M. V. Bykov, G. V. Ratovskii, P. A. Abramov, M. V. Pahomova, I. A. Ushakov, V. K. Voronov, and V. S. Tkach. "[Pd(acac)(L)2][BF4] (L = morpholine, diethylamine, dibutylamine, dioctylamine): Synthesis, structure and their catalytic activity." Journal of Molecular Structure 1133 (April 2017): 411–21. http://dx.doi.org/10.1016/j.molstruc.2016.12.025.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Mal’kov, A. A., E. V. Petrushchenko, T. V. Minyaeva, S. A. Lebedev, and I. P. Romm. "Structure and properties of dibutylamine complexes with aluminum and gallium halides: The role of hydrogen bonds." Russian Journal of General Chemistry 76, no. 4 (April 2006): 563–69. http://dx.doi.org/10.1134/s1070363206040116.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Shibata, Mitsuhiro, Naozumi Teramoto, Yoshihiro Someya, and Reiji Tsukao. "Nanocomposites based on poly(ε-caprolactone) and the montmorillonite treated with dibutylamine-terminated ε-caprolactone oligomer." Journal of Applied Polymer Science 104, no. 5 (2007): 3112–19. http://dx.doi.org/10.1002/app.25903.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Mougkogiannis, Panagiotis, Michael Turner, and Krishna Persaud. "Amine Detection Using Organic Field Effect Transistor Gas Sensors." Sensors 21, no. 1 (December 22, 2020): 13. http://dx.doi.org/10.3390/s21010013.

Full text

Abstract:

Low power gas sensors with high sensitivity and selectivity are desired for many practical applications. Devices based on organic field effect transistors are promising because they can be fabricated at modest cost and are low power devices. Organic field effect transistors fabricated in bottom-gate bottom-contact configuration using the organic semiconductor [2,5-(2-octyldodecyl)-3,6-diketopyrrolopyrrole-alt-5,5-(2,5-di(thien-2-yl)thieno] [3,2-b]thiophene) (DPP-T-TT) were systematically investigated to determine the response characteristics to a series of alkylamines and ammonia. The highest sensitivity was to dibutylamine with a limit of detection of 0.025 ppb, followed by n-butylamine, 0.056 ppb, and ammonia, 2.17 ppb. A model was constructed based on the Antoine equation that successfully allows the empirical prediction of the sensitivity and selectivity of the gas sensor to various analytes including amines and alcohols based on the Antoine C parameter and the heat of the vaporization of the analyte.

APA, Harvard, Vancouver, ISO, and other styles

19

Sabbatini, Jane Z. "Progress on the Development and Single-Laboratory Validation of a High-Performance Liquid Chromatographic Method for the Determination of Carbadox and Pyrantel Tartrate in Type B and C Medicated Feeds." Journal of AOAC INTERNATIONAL 92, no. 1 (January 1, 2009): 26–33. http://dx.doi.org/10.1093/jaoac/92.1.26.

Full text

Abstract:

Abstract Carbadox, an antimicrobial agent, and pyrantel tartrate, an anthelmintic, are feed additives that are often used in combination in the United States. The current AOAC methods for these analytes are spectrophotometric, using standard addition techniques. These methods are labor-intensive and prone to variability as well as matrix interferences. Published methods for both analytes that use high-performance liquid chromatography were evaluated and a test method was developed. The method uses a water prewetting step to enhance extraction of pyrantel followed by extraction with acetonitrileethanol (50 + 50). Sample extracts are filtered through a glass fiber filter and purified using alumina solid-phase extraction columns. Chromatography is performed on a C18 column with a gradient mobile phase of dibutylamine acetate and acetonitrile. The data show that both analytes exhibit acceptable peak shape when a C18 column that is both acid- and base-deactivated is used. Linearity has been established and initial recovery studies on medicated swine feeds are promising.

APA, Harvard, Vancouver, ISO, and other styles

20

Kalhor, Hamideh, and Naader Alizadeh. "Enhancing sensitivity of ion mobility spectrometry determination of aldehydes by in situ gas phase derivatization with dibutylamine." International Journal for Ion Mobility Spectrometry 16, no. 3 (February 12, 2013): 199–205. http://dx.doi.org/10.1007/s12127-013-0119-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Mokhtar, Nadia M., Abdelbaset A. El-Aaser, Mohamed N. El-Bolkainy, Hamdy A. Ibrahim, Nariman Badr El-Din, and Nagia Z. Moharram. "Effect of soybean feeding on experimental carcinogenesis—III. Carcinogenecity of nitrite and dibutylamine in mice: a histopathological study." European Journal of Cancer and Clinical Oncology 24, no. 3 (March 1988): 403–11. http://dx.doi.org/10.1016/s0277-5379(98)90009-8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Bhat, Ajmal R., Aabid H. Shalla, and Rajendra S. Dongre. "Dibutylamine (DBA): A highly efficient catalyst for the synthesis of pyrano[2,3-d]pyrimidine derivatives in aqueous media." Journal of Taibah University for Science 10, no. 1 (January 2016): 9–18. http://dx.doi.org/10.1016/j.jtusci.2015.03.004.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Henriks-Eckerman, Maj-Len, Jarmo Välimaa, and Christina Rosenberg. "Determination of airborne methyl isocyanate as dibutylamine or 1-(2-methoxyphenyl)piperazine derivatives by liquid and gas chromatography." Analyst 125, no. 11 (2000): 1949–54. http://dx.doi.org/10.1039/b005388k.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Karlsson, Daniel. "Determination of complex mixtures of airborne isocyanates and aminesPart 5.† Determination of low molecular weight aliphatic isocyanates as dibutylamine derivatives." Analyst 123, no. 7 (1998): 1507–12. http://dx.doi.org/10.1039/a801918e.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Mollah, Md Mahi Imam, Aman Dekebo, and Yonggyun Kim. "Immunosuppressive Activities of Novel PLA2 Inhibitors from Xenorhabdus hominickii, an Entomopathogenic Bacterium." Insects 11, no. 8 (August 4, 2020): 505. http://dx.doi.org/10.3390/insects11080505.

Full text

Abstract:

Eicosanoids mediate both cellular and humoral immune responses in insects. Phospholipase A2 (PLA2) catalyzes the first committed step in eicosanoid biosynthesis. It is a common pathogenic target of two entomopathogenic bacteria, Xenorhabdus and Photorhabdus. The objective of this study was to identify novel PLA2 inhibitors from X. hominickii and determine their immunosuppressive activities. To identify novel PLA2 inhibitors, stepwise fractionation of X. hominickii culture broth and subsequent enzyme assays were performed. Eight purified fractions of bacterial metabolites were obtained. Gas chromatography and mass spectrometry (GC-MS) analysis predicted that the main components in these eight fractions were 2-cyanobenzoic acid, dibutylamine, 2-ethyl 1-hexanol, phthalimide (PM), dioctyl terephthalate, docosane, bis (2-ethylhexyl) phthalate, and 3-ethoxy-4-methoxyphenol (EMP). Their synthetic compounds inhibited the activity of PLA2 in hemocytes of a lepidopteran insect, Spodoptera exigua, in a dose-dependent manner. They also showed significant inhibitory activities against immune responses such as prophenoloxidase activation and hemocytic nodulation of S. exigua larvae, with PM and EMP exhibiting the most potent inhibitory activities. These immunosuppressive activities were specific through PLA2 inhibition because an addition of arachidonic acid, a catalytic product of PLA2, significantly rescued such suppressed immune responses. The two most potent compounds (PM and EMP) showed significant insecticidal activities after oral administration. When the compounds were mixed with Bacillus thuringiensis (Bt), they markedly increased Bt pathogenicity. This study identified eight PLA2 inhibitors from bacterial metabolites of X. hominickii and demonstrated their potential as novel insecticides.

APA, Harvard, Vancouver, ISO, and other styles

26

Chen, Xin, Chiming Wang, Yuxiang Chen, Dongdong Qi, and Jianzhuang Jiang. "Vibrational spectra of alkylamino substituted phthalocyanine compounds: Density functional theory calculations." Journal of Porphyrins and Phthalocyanines 22, no. 09n10 (August 21, 2018): 771–76. http://dx.doi.org/10.1142/s1088424618500591.

Full text

Abstract:

The infrared spectra of tetrakis(dibutylamino) phthalocyanine and octakis(dibutylamino) compounds were studied via theoretical investigations. The results reveal deep fusion of the peripheral alkylamino moieties with the phthalocyanine chromophore in the tetrakis(dibutylamino)- but not in the octakis(dibutylamino)-phthalocyanine compounds. The successive localized molecular orbitals (LMO) and bond order analyses give support for the infrared vibrational results.

APA, Harvard, Vancouver, ISO, and other styles

27

Tohamy, Amany A., Akmal A. El Ghor, Nagia Z. Moharram, and Madiha M. El-Shazly. "Protective role of soybean feeding against the cytogenetical and histopathological effects of dibutylamine and sodium nitrate on bone marrow and liver of mice." Mutation Research/Environmental Mutagenesis and Related Subjects 360, no. 3 (August 1996): 155–63. http://dx.doi.org/10.1016/s0165-1161(96)90012-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Karlsson, Daniel, Mårten Spanne, Marianne Dalene, Mårten Spanne, and Gunnar Skarping. "Determination of complex mixtures of airborne isocyanates and aminesPart 4.† Determination of aliphatic isocyanates as dibutylamine derivatives using liquid chromatography and mass spectrometry." Analyst 123, no. 1 (1998): 117–23. http://dx.doi.org/10.1039/a705132h.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Xu, Jianxiong, Xiaohui Wang, Yaoyao Zhang, Wangqing Zhang, and Pingchuan Sun. "RAFT-mediated batch emulsion polymerization of styrene using poly[N-(4-vinylbenzyl)-N,N-dibutylamine hydrochloride] trithiocarbonate as both surfactant and macro-RAFT agent." Journal of Polymer Science Part A: Polymer Chemistry 50, no. 12 (March 23, 2012): 2484–98. http://dx.doi.org/10.1002/pola.26025.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Hamilton, DG, DE Lynch, and G. Smith. "Synthesis and Solid-State Structure of the Unsymmetrical Squaraine Dye 2-[4-(Dibutylamino)-2-hydroxyphenyl]-4-[4-(dibutylamino)phenyl]-cyclobutenebis(ylium)-1,3-diolate." Australian Journal of Chemistry 49, no. 12 (1996): 1339. http://dx.doi.org/10.1071/ch9961339.

Full text

Abstract:

The synthesis of an unsymmetrical squaraine dye, 2-[4-( dibutylamino )-2-hydroxyphenyl]-4-[4-( dibutylamino )phenyl] cyclobutenebis ( ylium )-1,3-diolate, has been achieved via a cross condensation reaction. In the solid state the compound is isomorphous with the known symmetrical dye bis [4-( dibutylamino )phenyl] squaraine. The single hydroxy group is found to be disordered equally over the centrosymmetrically trans-related ortho and ortho' phenyl ring sites.

APA, Harvard, Vancouver, ISO, and other styles

31

Spanne, M�rten, H�kan Tinnerberg, Marianne Dalene, and Gunnar Skarping. "Determination of complex mixtures of airborne isocyanates and amines. Part 1. Liquid chromatography with ultraviolet detection of monomeric and polymeric isocyanates as their dibutylamine derivatives." Analyst 121, no. 8 (1996): 1095. http://dx.doi.org/10.1039/an9962101095.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Alonso, Iván, Ismael Mozo, Isaías García de la fuente, Juan Antonio González, and José Carlos Cobos. "Thermodynamics of ketone+amine mixtures Part IV. Volumetric and speed of sound data at (293.15; 298.15 and 303.15K) for 2-butanone +dipropylamine, +dibutylamine or +triethylamine systems." Thermochimica Acta 512, no. 1-2 (January 2011): 86–92. http://dx.doi.org/10.1016/j.tca.2010.09.004.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Liu, Lin, Jianxiong Xu, and Huaming Li. "Ab Initio Batch Emulsion RAFT Copolymerization of Styrene and Methyl Methacrylate Mediated by Poly[N-(4-vinylbenzyl)-N,N-Dibutylamine Hydrochloride] Trithiocarbonate: Effect of Monomer Component." Journal of Nanoscience and Nanotechnology 16, no. 12 (December 1, 2016): 12268–74. http://dx.doi.org/10.1166/jnn.2016.12951.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

González, Juan Antonio, Iván Alonso, Ismael Mozo, Isaías García de la Fuente, and José Carlos Cobos. "Thermodynamics of (ketone+amine) mixtures. Part VI. Volumetric and speed of sound data at (293.15, 298.15, and 303.15)K for (2-heptanone+dipropylamine, +dibutylamine, or +triethylamine) systems." Journal of Chemical Thermodynamics 43, no. 10 (October 2011): 1506–14. http://dx.doi.org/10.1016/j.jct.2011.05.003.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Chen, Yuxiang, Fang Ma, Xiaoxiang Chen, Bowei Dong, Kang Wang, Shangda Jiang, Chiming Wang, et al. "Novel bis(phthalocyaninato) rare earth complexes with the bulky and strong electron-donating dibutylamino groups: synthesis, spectroscopy, and SMM properties." Inorganic Chemistry Frontiers 4, no. 9 (2017): 1465–71. http://dx.doi.org/10.1039/c7qi00332c.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Huang, Jin-Dou, Jinfeng Zhao, Kun Yu, Xiaohua Huang, Shi-Bo Cheng, and Huipeng Ma. "Theoretical study of charge-transport and optical properties of indeno[1,2-b]fluorene-6,12-dione-based semiconducting materials." Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 74, no. 6 (November 24, 2018): 705–11. http://dx.doi.org/10.1107/s2052520618013550.

Full text

Abstract:

The conducting and optical properties of a series of indeno[1,2-b]fluorene-6,12-dione (IFD)-based molecules have been systematically studied and the influences of butyl, butylthio and dibutylamino substituents on the reorganization energies, intermolecular electronic couplings and charge-injection barriers of IFD have been discussed. The quantum-chemical calculations combined with electron-transfer theory reveal that the incorporation of sulfur-linked side chains decreases reorganization energy associated with hole transfer and optimizes intermolecular π–π stacking, which results in excellent ambipolar charge-transport properties (μh = 1.15 cm2 V−1 s−1 and μe = 0.08 cm2 V−1 s−1); in comparison, addition of dibutylamino side chains increases intermolecular steric interactions and hinders perfect intermolecular π–π stacking, which results in the weak electronic couplings and finally causes the low intrinsic hole mobility (μh = 0.01 cm2 V−1 s−1). Furthermore, electronic spectra of butyl-IFD, butylthio-IFD and dibutylamino-IFD were simulated and compared with the reported experimental data. Calculations demonstrate that IFD-based molecules possess potential for developing novel infrared and near-infrared probe materials via suitable chemical modifications.

APA, Harvard, Vancouver, ISO, and other styles

37

Kargbo, Osman, Chun-Lan Zheng, and Shou-Nian Ding. "Strong anodic electrochemiluminescence from dissolved oxygen with 2-(dibutylamino) ethanol for glucose oxidase assay." RSC Adv. 4, no. 65 (2014): 34701–5. http://dx.doi.org/10.1039/c4ra05363j.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Chen, Yuxiang, Fang Ma, Yuehong Zhang, Luyang Zhao, Kang Wang, Dongdong Qi, Hao-Ling Sun, and Jianzhuang Jiang. "Heteroleptic chiral bis(phthalocyaninato) terbium double-decker single-ion magnets." Inorganic Chemistry Frontiers 5, no. 8 (2018): 2006–12. http://dx.doi.org/10.1039/c8qi00493e.

Full text

Abstract:

Chiral binaphthyl and dibutylamino were incorporated onto the periphery of the bis(phthalocyaninato) terbium SIM, confirming the effectiveness of tuning the double-decker SIM peroperties thorugh tuning the molecular magnetic anisotropy.

APA, Harvard, Vancouver, ISO, and other styles

39

Arunchander, A., S. Gouse Peera, Subhendu K. Panda, S. Chellammal, and A. K. Sahu. "Simultaneous co-doping of N and S by a facile in-situ polymerization of 6-N,N-dibutylamine-1,3,5-triazine-2,4-dithiol on graphene framework: An efficient and durable oxygen reduction catalyst in alkaline medium." Carbon 118 (July 2017): 531–44. http://dx.doi.org/10.1016/j.carbon.2017.03.093.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

González, Juan Antonio, Iván Alonso, Isaías García De La Fuente, and José Carlos Cobos. "Thermodynamics of ketone+amine mixtures. Part IX. Excess molar enthalpies at 298.15K for dipropylamine, or dibutylamine+2-alkanone systems and modeling of linear or aromatic amine+2-alkanone mixtures in terms of DISQUAC and ERAS." Fluid Phase Equilibria 343 (April 2013): 1–12. http://dx.doi.org/10.1016/j.fluid.2013.01.011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Parveen, Saima, Wei Zhang, Yali Yuan, Lianzhe Hu, M. Rehan Hasan Shah Gilani, Aziz ur Rehman, and Guobao Xu. "Electrogenerated chemiluminescence of /2-(dibutylamino)ethanol system." Journal of Electroanalytical Chemistry 688 (January 2013): 45–48. http://dx.doi.org/10.1016/j.jelechem.2012.05.014.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Hinderer, Florian, and Uwe H. F. Bunz. "The Photophysics of Pyridine-Derivatizedortho-,meta-, andpara-Dibutylamino Cruciforms." Chemistry - A European Journal 19, no. 26 (May 13, 2013): 8490–96. http://dx.doi.org/10.1002/chem.201300211.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Fun, Hoong-Kun, Chin Sing Yeap, A. M. Vijesh, Arun M. Isloor, and P. K. Vasudeva. "2-Dibutylamino-1-(2,7-dichloro-9H-fluoren-4-yl)ethanol." Acta Crystallographica Section E Structure Reports Online 66, no. 10 (September 25, 2010): o2624—o2625. http://dx.doi.org/10.1107/s1600536810037566.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Kantlehner, Willi, Ioannis Tiritiris, Wolfgang Frey, and Ralf Kreß. "Orthoamide und Iminiumsalze, IC. Synthese und Reaktionen von N,N,N′,N′,N′′-Pentaalkyl-N′′-[2-(N,N,N′,N′,N′′-pentaalkylguanidinio)ethyl]-guanidiniumsalzen." Zeitschrift für Naturforschung B 75, no. 6-7 (August 27, 2020): 685–95. http://dx.doi.org/10.1515/znb-2019-0230.

Full text

Abstract:

AbstractBis[bis(dibutylamino)methylen]hydrazine 8 is prepared from N,N,N′,N′-tetrabutylchloroformamidinium chloride (4c) and hydrazine. Bromine transforms 8 to the heterocyclic guanidinium salt 15a which is isolated as tetraphenylborate. From N,N,N′,N′-tetraalkylchloroformamidiniumchlorides and ethylendiamine the diguanidines are prepared which are alkylated to give diguanidinium salts, From these salts guanidinium salts can be prepared by anion metathesis with tetraphenylborate-, iodide-, hexafluorphosphate-, trifluoromethansulfonat-, bis(trifluormethansulfonyl)imide and tricyanmethanide as counteranions. The structure of the compounds 15 and 17b is confirmed by crystal structure analyses.

APA, Harvard, Vancouver, ISO, and other styles

45

Calabrese, Valentina, Silvio Quici, Ester Rossi, Elena Cariati, Claudia Dragonetti, Dominique Roberto, Elisa Tordin, Filippo De Angelis, and Simona Fantacci. "Highly stable 7-N,N-dibutylamino-2-azaphenanthrene and 8-N,N-dibutylamino-2-azachrysene as a new class of second order NLO-active chromophores." Chemical Communications 46, no. 44 (2010): 8374. http://dx.doi.org/10.1039/c0cc02781b.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

He, Wei, and Xiao Nan Huang. "pH-Sensitive Materials with Controllable pH Phase Transition Value." Applied Mechanics and Materials 727-728 (January 2015): 219–22. http://dx.doi.org/10.4028/www.scientific.net/amm.727-728.219.

Full text

Abstract:

Novel pHsensitive methacrylate-based (co)polymers with pendent tertiary amine groups were prepared by free radical polymerization of monomer 2-(dimethylamino)ethyl methacrylate (DMA) and 2-(Dibutylamino)ethyl methacrylate (DBA). These polymers are pH sensitive in aqueous solution, which was studied by titration, transmittance measurements experiment. The pH responsive polymers dissociate at lower pH value because of the electrostatic repulsion and aggregate above their pH responsive value induced by hydrophobic interaction of pendent group. The pH responsive value of (co)polymers can be controlled by ratio of DMA and DBA. These novel polymers have great potential application for biomedicine.

APA, Harvard, Vancouver, ISO, and other styles

47

Krause, Th, G. Umbach, T. Wolff, and C. Schuemichen. "Localization of 99mTc-Diphosphonates in Newly Formed Bone Matrix as a Measure of Bone Lesion Detectability." Nuklearmedizin 27, no. 01 (1988): 8–11. http://dx.doi.org/10.1055/s-0038-1628903.

Full text

Abstract:

The lesion-to-normal-bone ratios of DBA-MDP (dibutylamino-methylene-diphosphonate), DPD (dicarboxypropane-diphosphonate) and MDP (methylene-diphosphonate) each labeled with 99mTc, were evaluated in experimental bone lesions. In 3-day old lesions this ratio was increased twofold for DBA-MDP in comparison with MDP and DPD which showed nearly equal ratios. Later on these differences became negligibly small. It is concluded that 99mTc-DBA-MDP is fixed more strongly in the immature bone matrix and that this will lead to an improvement in the detectability of lesions containing larger amounts of immature bone matrix.

APA, Harvard, Vancouver, ISO, and other styles

48

Mizutani, W., M. Motomatsu, and H. Tokumoto. "Scanning tunneling microscopy of dibutylamino-triazine-dithiol monolayer on Au(111)." Thin Solid Films 273, no. 1-2 (February 1996): 70–75. http://dx.doi.org/10.1016/0040-6090(95)06770-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Segura, José L., Rafael Gómez, Nazario Martín, and Dirk M. Guldi. "Synthesis of Photo- and Electroactive Stilbenoid Dendrimers Carrying Dibutylamino Peripheral Groups." Organic Letters 3, no. 17 (August 2001): 2645–48. http://dx.doi.org/10.1021/ol016083l.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Chen, Yuxiang, Wenjuan Fang, Kang Wang, Wei Liu, and Jianzhuang Jiang. "Nonperipheral Tetrakis(dibutylamino)phthalocyanines. New Types of 1,8,15,22-Tetrakis(substituted)phthalocyanine Isomers." Inorganic Chemistry 55, no. 18 (August 31, 2016): 9289–96. http://dx.doi.org/10.1021/acs.inorgchem.6b01371.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!