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Thematische Bibliographien / Dibutylamin / Zeitschriftenartikel

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Zeitschriftenartikel zum Thema „Dibutylamin“

Autor: Grafiati

Veröffentlicht am 29. Juni 2021

Zuletzt aktualisiert am 17. Februar 2022

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1

Chen, Xin, Chiming Wang, Yuxiang Chen, Dongdong Qi und Jianzhuang Jiang. „Vibrational spectra of alkylamino substituted phthalocyanine compounds: Density functional theory calculations“. Journal of Porphyrins and Phthalocyanines 22, Nr. 09n10 (21.08.2018): 771–76. http://dx.doi.org/10.1142/s1088424618500591.

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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.

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2

Hamilton, DG, DE Lynch und 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, Nr. 12 (1996): 1339. http://dx.doi.org/10.1071/ch9961339.

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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.

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3

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

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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.

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4

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, Nr. 9 (2017): 1465–71. http://dx.doi.org/10.1039/c7qi00332c.

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5

Huang, Jin-Dou, Jinfeng Zhao, Kun Yu, Xiaohua Huang, Shi-Bo Cheng und 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, Nr. 6 (24.11.2018): 705–11. http://dx.doi.org/10.1107/s2052520618013550.

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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.

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6

Brittle, Stuart A., Tim H. Richardson, Lisa Varley und Chris A. Hunter. „Amine-sensing properties of a covalently linked calix[4]arene–porphyrin ("calixporph") multilayered film“. Journal of Porphyrins and Phthalocyanines 14, Nr. 12 (Dezember 2010): 1027–33. http://dx.doi.org/10.1142/s1088424610002859.

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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.

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7

Kargbo, Osman, Chun-Lan Zheng und Shou-Nian Ding. „Strong anodic electrochemiluminescence from dissolved oxygen with 2-(dibutylamino) ethanol for glucose oxidase assay“. RSC Adv. 4, Nr. 65 (2014): 34701–5. http://dx.doi.org/10.1039/c4ra05363j.

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8

King, James F., Manjinder S. Gill und 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, Nr. 9 (01.09.2005): 1525–35. http://dx.doi.org/10.1139/v05-154.

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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.

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9

Chen, Yuxiang, Fang Ma, Yuehong Zhang, Luyang Zhao, Kang Wang, Dongdong Qi, Hao-Ling Sun und Jianzhuang Jiang. „Heteroleptic chiral bis(phthalocyaninato) terbium double-decker single-ion magnets“. Inorganic Chemistry Frontiers 5, Nr. 8 (2018): 2006–12. http://dx.doi.org/10.1039/c8qi00493e.

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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.

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10

Djudjic, Radana, und Branka Rodic-Grabovac. „Synthesis of dialkylaminocarbonyl N-chloro- carbonyl-N-phenyl-4-aminobenzo-(-pyrone derivatives“. Acta Periodica Technologica, Nr. 35 (2004): 187–91. http://dx.doi.org/10.2298/apt0435187d.

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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.

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11

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

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12

Sun, Yue, Weisheng Zheng und Deqiang Yin. „Removal of 2-naphthalenesulfonic acid using novel dual functional weakly basic anion exchange resins from aqueous solution“. Adsorption Science & Technology 37, Nr. 3-4 (18.01.2019): 260–73. http://dx.doi.org/10.1177/0263617418824809.

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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.

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13

Hinderer, Florian, und Uwe H. F. Bunz. „The Photophysics of Pyridine-Derivatizedortho-,meta-, andpara-Dibutylamino Cruciforms“. Chemistry - A European Journal 19, Nr. 26 (13.05.2013): 8490–96. http://dx.doi.org/10.1002/chem.201300211.

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14

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 und 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, Nr. 08n11 (August 2016): 1377–89. http://dx.doi.org/10.1142/s108842461650111x.

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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.

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15

Kalla, Reddi Mohan Naidu, Mi Ri Kim und Il Kim. „Dibutylamine-catalysed efficient one-pot synthesis of biologically potent pyrans“. Tetrahedron Letters 56, Nr. 5 (Januar 2015): 717–20. http://dx.doi.org/10.1016/j.tetlet.2014.12.079.

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16

Jing, Guohua, Fan Liu, Bihong Lv, Xiaobin Zhou und Zuoming Zhou. „Novel Ternary Absorbent: Dibutylamine Aqueous–Organic Solution for CO2 Capture“. Energy & Fuels 31, Nr. 11 (27.10.2017): 12530–39. http://dx.doi.org/10.1021/acs.energyfuels.7b02382.

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17

Fun, Hoong-Kun, Chin Sing Yeap, A. M. Vijesh, Arun M. Isloor und P. K. Vasudeva. „2-Dibutylamino-1-(2,7-dichloro-9H-fluoren-4-yl)ethanol“. Acta Crystallographica Section E Structure Reports Online 66, Nr. 10 (25.09.2010): o2624—o2625. http://dx.doi.org/10.1107/s1600536810037566.

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18

Horálek, Jiří, Emil Krejcar und Jaroslav Churáček. „Addition of secondary amino group to double bond of acrylates“. Collection of Czechoslovak Chemical Communications 53, Nr. 4 (1988): 833–38. http://dx.doi.org/10.1135/cccc19880833.

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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.

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19

Kantlehner, Willi, Ioannis Tiritiris, Wolfgang Frey und 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, Nr. 6-7 (27.08.2020): 685–95. http://dx.doi.org/10.1515/znb-2019-0230.

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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.

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20

Calabrese, Valentina, Silvio Quici, Ester Rossi, Elena Cariati, Claudia Dragonetti, Dominique Roberto, Elisa Tordin, Filippo De Angelis und 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, Nr. 44 (2010): 8374. http://dx.doi.org/10.1039/c0cc02781b.

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21

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

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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.

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22

Krause, Th, G. Umbach, T. Wolff und C. Schuemichen. „Localization of 99mTc-Diphosphonates in Newly Formed Bone Matrix as a Measure of Bone Lesion Detectability“. Nuklearmedizin 27, Nr. 01 (1988): 8–11. http://dx.doi.org/10.1055/s-0038-1628903.

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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.

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23

Fiddler, Walter, und 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, Nr. 3 (01.05.1993): 578–81. http://dx.doi.org/10.1093/jaoac/76.3.578.

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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.

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24

Mizutani, W., M. Motomatsu und H. Tokumoto. „Scanning tunneling microscopy of dibutylamino-triazine-dithiol monolayer on Au(111)“. Thin Solid Films 273, Nr. 1-2 (Februar 1996): 70–75. http://dx.doi.org/10.1016/0040-6090(95)06770-1.

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25

Segura, José L., Rafael Gómez, Nazario Martín und Dirk M. Guldi. „Synthesis of Photo- and Electroactive Stilbenoid Dendrimers Carrying Dibutylamino Peripheral Groups“. Organic Letters 3, Nr. 17 (August 2001): 2645–48. http://dx.doi.org/10.1021/ol016083l.

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26

Spadavecchia, Jolanda, Giuseppe Ciccarella, Alessandro Buccolieri, Giuseppe Vasapollo und Roberto Rella. „Synthesis of tailored phthalocyanines and their application as spin coated films in volatile organic compound detection“. Journal of Porphyrins and Phthalocyanines 07, Nr. 08 (August 2003): 572–78. http://dx.doi.org/10.1142/s1088424603000720.

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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.

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27

Chen, Yuxiang, Wenjuan Fang, Kang Wang, Wei Liu und Jianzhuang Jiang. „Nonperipheral Tetrakis(dibutylamino)phthalocyanines. New Types of 1,8,15,22-Tetrakis(substituted)phthalocyanine Isomers“. Inorganic Chemistry 55, Nr. 18 (31.08.2016): 9289–96. http://dx.doi.org/10.1021/acs.inorgchem.6b01371.

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28

Viner, Kelsey J., Hannah M. Roy, Roland Lee, Ouwen He, Pascale Champagne und Philip G. Jessop. „Transesterification of soybean oil using a switchable-hydrophilicity solvent, 2-(dibutylamino)ethanol“. Green Chemistry 21, Nr. 17 (2019): 4786–91. http://dx.doi.org/10.1039/c9gc00241c.

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29

Letcher, T. M., U. Domańska und P. Govender. „The excess volumes of (dibutylamine + an ether) at the temperature 298.15 K“. Journal of Chemical Thermodynamics 26, Nr. 9 (September 1994): 1019–23. http://dx.doi.org/10.1006/jcht.1994.1119.

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30

Mori, Kunio, Kazutaka Suzuki, Kenji Shimizu und Yoshiyuki Oishi. „Evaporation Polymerization of 6-Dibutylamino-1,3,5-triazine-2,4-dithiol on Iron Plates“. Langmuir 18, Nr. 24 (November 2002): 9527–32. http://dx.doi.org/10.1021/la020301h.

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31

Mao, Yongjun, Long Zhang, Wenxin Chen, Pengfei Wu, Lehao Bu und Jingli Xu. „A Practical, Wastewater-free Synthesis of m-Aminophenol and 3-(Dibutylamino)phenol“. Organic Preparations and Procedures International 52, Nr. 3 (27.04.2020): 226–31. http://dx.doi.org/10.1080/00304948.2020.1743117.

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32

Huang, Xian Nan, Wei Li und Wei He. „pH Tunable Turn on and Turn off Quantum Dots Conjugated with Poly(2-(Dialkylamino)ethyl Methacrylate)“. Advanced Materials Research 998-999 (Juli 2014): 75–78. http://dx.doi.org/10.4028/www.scientific.net/amr.998-999.75.

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A novel pH sensitive cadmium sulfide quantum dot (CdS QD) was prepared by a coprecipitation method in the presence of pH sensitive poly (2-(dimethylamino) ethyl methacrylate)-co-poly (2-(dibutylamino) ethyl methacrylate)(PDMA-PDBA) copolymer. CdCl2and Na2S were mixed in aqueous media in the presence of PDMA-PDBA. The amine groups of PDMA were anchored on the surface of the formed CdS nanoparticles, whereas the PDBA segment was anchored on the surface to form a hydrophilic palisade at low pH environment, thus turn on the fluorescence CdS QD probe; at high pH value, PDBA segments precipitate and turn off fluorescence because of the phase separation. This novel pH sensitive fluorescene CdS QDs probe have great application potential for target imaging of cancer.

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33

Matsui, Masaki, Yukiyo Ando, Osamu Tokura, Yasuhiro Kubota und Kazumasa Funabiki. „Solid-state fluorescence of 6-aryl-9-(dibutylamino)benzo[a]phenoxazin-5-ones“. Tetrahedron 69, Nr. 16 (April 2013): 3410–14. http://dx.doi.org/10.1016/j.tet.2013.02.083.

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34

Mori, Kunio, Wataru Ibashi, Hidetoshi Hirahara, Yoshiyuki Oishi und Masanari Katayama. „Polymerization of 2-dibutylamino-1,3,5-triazine-4,6-dithiol on wire during friction process“. Journal of Applied Polymer Science 58, Nr. 13 (26.12.1995): 2451–58. http://dx.doi.org/10.1002/app.1995.070581312.

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35

Segura, Jose L., Rafael Gomez, Nazario Martin und Dirk M. Guldi. „ChemInform Abstract: Synthesis of Photo- and Electroactive Stilbenoid Dendrimers Carrying Dibutylamino Peripheral Groups.“ ChemInform 32, Nr. 49 (23.05.2010): no. http://dx.doi.org/10.1002/chin.200149070.

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36

Airoldi, Luisa, Roberta Pastorelli, Alessandra Macrí, Marina Bonfanti und Roberto Fanelli. „Effect of butylated hydroxyanisole on in vitro and in vivo nitrosation of dibutylamine“. Toxicology 43, Nr. 2 (Februar 1987): 217–25. http://dx.doi.org/10.1016/0300-483x(87)90011-4.

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37

Fu, Na, Jeremiah J. Gassensmith und Bradley D. Smith. „A New Class of Hydroxy-Substituted Squaraine Rotaxane“. Australian Journal of Chemistry 63, Nr. 5 (2010): 792. http://dx.doi.org/10.1071/ch09671.

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A templated macrocyclization reaction was used to permanently encapsulate a highly fluorescent hydroxy-substituted squaraine dye inside a tetralactam macrocycle. The free squaraine dye is quite rigid due to internal hydrogen bonding and its photophysical properties hardly change upon encapsulation. A combination of X-ray and NMR data show that the surrounding tetralactam macrocycle adopts an unusually rigid chair conformation and does not undergo rapid pirouetting. Because of its large size and conformational rigidity, the macrocycle creates anisotropic NMR shielding zones that extend over the N,N-dibutylamino groups at each end of the squaraine thread. This shielding anisotropy allows hindered aryl-N rotation to be observed by NMR spectroscopy and provides direct experimental evidence that quinoid-like resonance structures are major contributors to the bis(N,N-dialkylaminophenyl)squaraine resonance hybrid.

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38

Mori, Kunio, Hidetoshi Hirahara, Yoshiyuki Oishi und Masanori Katayama. „Tribological Polymerization of 2-Dibutylamino-1,3,5-Triazine-4,6-dithiol on Iron Wire during Drawing“. Polymer Journal 27, Nr. 10 (Oktober 1995): 1058–63. http://dx.doi.org/10.1295/polymj.27.1058.

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39

Jandó, Tamás, und Kunio Mori. „Properties of poly(vinyl chloride) fibers crosslinked by 2-dibutylamino-4,6-dimercapto-1,3,5-triazine“. Journal of Vinyl and Additive Technology 13, Nr. 2 (Juni 1991): 109–13. http://dx.doi.org/10.1002/vnl.730130210.

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40

Jiang, Xiaohua, Wengjie Ding und Chonglin Luan. „Molecularly imprinted polymers for the selective determination of trace bisphenol A in river water by electrochemiluminescence“. Canadian Journal of Chemistry 91, Nr. 8 (August 2013): 656–61. http://dx.doi.org/10.1139/cjc-2013-0051.

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The detection of bisphenol A (BPA) is very important for public health and environmental monitoring. In this work, BPA was found to be able to significantly quench the electrochemiluminescence (ECL) of the Ru(bpy)32+/2-(dibutylamino)ethanol (DBAE) system. Molecularly imprinted polymer was synthesized as solid-phase extraction sorbents, which were used for the selective extraction and purification of BPA. Under optimal conditions, the inhibited ECL intensity versus the logarithm of the concentration of BPA was in good linear relationship over a concentration range from 2.2 × 10−10 to 1.1 × 10−7 mol/L. The limit of detection was 4.5 × 10−11 mol/L (S/N = 3). The developed method was successfully applied for determination of BPA in river water with high sensitivity and reliability. Further, a possible mechanism for the quenching effects of the Ru(bpy)32+/DBAE system by BPA was also proposed.

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41

Kumari, Kavitha, und Sanjeev Maken. „Optical Properties, Excess Volume Prediction from Refractive Index and Intermolecular Interactions in Dibutylamine + Isomeric Butanol“. Asian Journal of Chemistry 33, Nr. 6 (2021): 1287–93. http://dx.doi.org/10.14233/ajchem.2021.23000.

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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.

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42

Selivanova, G. A., E. V. Tretyakov, E. V. Amosov, I. Yu Bagryanskaya, V. G. Vasiliev, E. V. Vasilyev, V. D. Tikhova et al. „X-ray induced phase transitions in 4-((4-(dibutylamino)phenyl)diazenyl)-biphenyl-2,3′,4′-tricarbonitrile“. Journal of Molecular Structure 1107 (März 2016): 242–48. http://dx.doi.org/10.1016/j.molstruc.2015.11.060.

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43

Saito, Kyohei, Naoya Nishimura, Shigeko Sasaki, Yoshiyuki Oishi und Yuji Shibasaki. „Synthesis of polyguanamines from 2-N,N-dibutylamino-4,6-dichloro-1,3,5-triazine with aromatic diamines“. Reactive and Functional Polymers 73, Nr. 5 (Mai 2013): 756–63. http://dx.doi.org/10.1016/j.reactfunctpolym.2013.03.005.

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44

Jando, Thomas, und Kunio Mori. „Crosslinking of Poly(vinyl chloride) Fibers with 2-Dibutylamino-4,6-dimercapto-1,3,5-triazine in Water“. Polymer Journal 22, Nr. 9 (September 1990): 793–802. http://dx.doi.org/10.1295/polymj.22.793.

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45

Mougkogiannis, Panagiotis, Michael Turner und Krishna Persaud. „Amine Detection Using Organic Field Effect Transistor Gas Sensors“. Sensors 21, Nr. 1 (22.12.2020): 13. http://dx.doi.org/10.3390/s21010013.

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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.

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46

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, Nr. 1 (01.01.2009): 26–33. http://dx.doi.org/10.1093/jaoac/92.1.26.

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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.

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47

Cowman,, Alan F., Leslie W. Deady,, Eric Deharo,, José Desneves und Leann Tilley. „Synthesis and Activity of Some Antimalarial Bisquinolinemethanols“. Australian Journal of Chemistry 50, Nr. 11 (1997): 1091. http://dx.doi.org/10.1071/c97086.

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A new type of bisquinoline antimalarial, containing the basic side chain of the cinchona alkaloids, has been evaluated. Five bis ethers, from 10,11-dihydrocupreine linked through the 6′-hydroxy group by -(CH2)2n- bridges (n = 2-5) (series A), and six bis amides, from 8′-amino-10,11-dihydrocinchonidine linked by -CO(CH2)2nCO- bridges (n = 1-6) (series B), were synthesized and screened against chloroquine-sensitive and -resistant strains and a mefloquine-resistant strain of Plasmodium falciparum in vitro. Two analogues of series B (n= 4; 5), with a 2-(dibutylamino)-1-hydroxyethyl side chain (series C), were also included. Compounds within series A were generally least active. Among the rest were compounds as active as mefloquine, with diminished cross-resistance to the mefloquine-resistant strain. The most potent (series B, n = 4) was highly active against chloroquine-sensitive, chloroquine-resistant and mefloquine-resistant parasites. Invivo testing, however, showed the compound to be too toxic for further development

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48

Ashwell, Geoffrey J., Patricia C. Williamson, Andrew Green, Gurmit S. Bahra und Christopher R. Brown. „Aggregation-Induced Linear and Non-Linear Optical Properties of Four Hydroxy-Substituted Analogues of 2,4-Bis[4-(dibutylamino)phenyl]squaraine“. Australian Journal of Chemistry 51, Nr. 7 (1998): 599. http://dx.doi.org/10.1071/c98059.

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Langmuir films of the title compound, 2,4-bis[4-(dibutylamino)phenyl]squaraine, Sq0, and its substituted analogues, Sq1 (monohydroxy) to Sq4 (tetrahydroxy), exhibit three well defined phases at the air–water interface: λmax 525–550 nm (H-aggregate); 660–670 nm (intermediate); 760–770 nm (J-aggregate). The monolayer spectra are influenced by the surface pressure and the number of hydroxy substituents and, when the monolayers are transferred to a solid substrate, there is a correlation between the linear and non-linear optical behaviour of the Langmuir-Blodgett films. Second-harmonic generation has been observed even though the unit molecular structures of two analogues, Sq0 and Sq4, are centric. The behaviour is aggregation-induced and there is evidence that the dyes associate in dilute solution. The electrospray ionization mass spectra exhibit peaks with high mass/charge (m/z) ratios; the data conform to the dimeric aggregate and, for solutions of two or more squaraines, corroborate the existence of heteromolecular associates.

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49

Ooyama, Yousuke, Akiko Hayashi, Tomohiro Okamoto, Haruka Egawa, Toshiki Mamura und Katsuhira Yoshida. „Synthesis, X-ray Crystal Structures, and Solid-State Fluorescence Properties of 5,5-Dialkyl-9-dibutylamino-5H-benzo[b]naphtho[1,2-d]furan-6-one and 3,3-Dialkyl-9-dibutylamino-3H-benzo[kl]xanthen-2-one“. European Journal of Organic Chemistry 2008, Nr. 18 (Juni 2008): 3085–94. http://dx.doi.org/10.1002/ejoc.200800219.

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50

Suslov, D. S., M. V. Bykov, G. V. Ratovskii, P. A. Abramov, M. V. Pahomova, I. A. Ushakov, V. K. Voronov und 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.

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