نتایج جستجو برای: carbazole chromophores

تعداد نتایج: 4441  

Journal: :Catalysts 2021

Recently, there have been numerous efforts to develop hydrogen-rich organic materials because hydrogen energy is emerging as a renewable source. In this regard, we designed and prepared four new based on N-alkyl-bis(carbazole), 9,9′-(2-methylpropane-1,3-diyl)bis(9H-carbazole) (MBC), 9,9′-(2-ethylpropane-1,3-diyl)bis(9H-carbazole) (EBC), 9,9′-(2-propylpropane-1,3-diyl)bis(9H-carbazole) (PBC), 9,...

2009
Hoong-Kun Fun Wisanu Maneerat Surat Laphookhieo Suchada Chantrapromma

THE TITLE COMPOUND [SYSTEMATIC NAME: 1-meth-oxy-2-(3-methyl-but-2-en-yl)-9H-carbazole-3-carbaldehyde], C(19)H(19)NO(2), is a natural carbazole which was isolated from the twigs of Clausena lansium. The carbazole ring system is essentially planar with a mean deviation of 0.0068 (10) Å. The aldehyde substituent is approximately co-planar with the attached benzene ring with a torsion angle of -8.5...

2015
Ejabul Mondal Jean-Paul Lellouche Maria Naddaka

A series of novel functional carbazole (Cbz)-based carboxylated monomers were synthesized and characterized. A Clauson-Kaas procedure, a deprotection step, amide coupling, and hydrolysis were utilized as key chemical reactions towards the multistep synthesis of monomers in good to excellent isolated yields. The design strategy was further extended to complex carbazole-COOH monomers incorporated...

2010
Tzi-Yi Wu Ming-Hsiu Tsao Fu-Lin Chen Shyh-Gang Su Cheng-Wen Chang Hong-Paul Wang Yuan-Chung Lin Wen-Chung Ou-Yang I-Wen Sun

New organic dyes comprising carbazole, iminodibenzyl, or phenothiazine moieties, respectively, as the electron donors, and cyanoacetic acid or acrylic acid moieties as the electron acceptors/anchoring groups were synthesized and characterized. The influence of heteroatoms on carbazole, iminodibenzyl and phenothiazine donors, and cyano-substitution on the acid acceptor is evidenced by spectral, ...

2010
Nuray Yeksan Ece Uzkara Orhan Zeybek Erol Asker

The title compound, C(21)H(18)N(2), was obtained as the product of the reaction between 9-ethyl-9H-carbazole-3-carbaldehyde and aniline in ethanol. The crystal packing is stabilized mainly by C-H⋯π inter-actions between the carbazole benzene rings and the methyl-ene H atoms.

2009
Zi-Dan Xiao Tong Pan Dao-Wu Yang

The title compound, C(19)H(13)BrClN, was synthesized by N-alkyl-ation of 4-chloro-1-(chloro-meth-yl)benzene with 3-bromo-9H-carbazole. The carbazole ring system is essentially planar, with a mean deviation of 0.028 Å, and it makes a dihedral angle of 91.2 (3) Å with the plane of the benzene ring.

2009
Jian-lan Cui Mei Duan Liu-qing Cai

The title compound, C(19)H(12)Br(2)ClN, was synthesized by N-alkyl-ation of 1-chloro-4-(chloro-meth-yl)benzene with 3,6-dibromo-9H-carbazole. The carbazole ring system is essentially planar (mean deviation of 0.028 Å) and makes a dihedral angle of 74.6 (3)° with the plane of the benzene ring.

Journal: :Atmosphere 2022

Carbazole is one of the typical heterocyclic aromatic compounds (NSO-HETs) observed in polluted urban atmosphere, which has become a serious environmental concern. The most important atmospheric loss process carbazole reaction with OH radical. present work investigated mechanism OH-initiated oxidation degradation by using density functional theory (DFT) calculations at M06-2X/6-311++G(3df,2p)//...

2002
Oksana Ostroverkhova Kenneth D. Singer

The model of space-charge formation in photorefractive polymers due to Schildkraut and Buettner has been modified to include thermally accessible deep traps as well as shallow traps. The dynamic equations have been solved semiempirically using independent measurements of photoconductive properties to predict photorefractive dynamics. Dependencies of the dynamics on charge generation, mobility, ...

2009
Jian-lan Cui Mei Duan Liu-qing Cai

The title compound, C(19)H(12)Br(3)N, was synthesized by N-alkyl-ation of 1-bromo-4-(bromo-meth-yl)benzene with 3,6-dibromo-9H-carbazole. There are two unique mol-ecules in the asymmetric unit. The carbazole ring system is essentially planar, with a mean deviation of 0.0402 Å for one mol-ecule and 0.0279 Å for the other. The carbazole planes are inclined to the benzene ring planes at dihedral a...

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