نتایج جستجو برای: carbazole

تعداد نتایج: 1806  

2009
Yu-Ling Zhao Tian-Zhi Yu Jing Meng

The mol-ecule of the title compound, C(31)H(29)N(3), contains a hexyl chain, a coordination unit (benzimidazole) and a functional group (carbazole). The benzimidazole ring is not coplanar with either the phenyl ring or the carbazole system, making dihedral angles of 43.26 (3) and 39.03 (2)°, respectively. The dihedral angle between the phenyl ring and the carbazole system is 24.42 (3)°. The hex...

A new carbazole- containing polymer has been synthesized for further photophysical studies. Efficient synthesis of the substituted methyl methacrylate has been accomplished via microwave assisted synthesis of 1 - chloro - 4-carboxy -5,6, 7, 8- tetrahydrocarbazole followed by further steps, such as reduction of the 4-substituted methyl carboxylate, dechlor...

Abdellatif Makayssi Kenza Hasnaoui Mohammed Bouachrine, Mohammed Hamidi

In this work, we present firstly a study based on the calculation of the local spin densities of radical cations, which is known as a good measure of reactivity for coupling reactions, to obtain a theoretical basis for the one-step formation of poly(3.6-carbazole) and derivatives. Then we detail a DFT theoretical study of the geometric and electronic properties of oligomers based on carbazole a...

2014
P. Narayanan K. Sethusankar Velu Saravanan Arasambattu K. Mohanakrishnan

In the sterically hindered title compound, C26H17ClN2O6S, the carbazole ring has a maximum deviation from planarity of 0.067 (4) Å for the C atom connected to the aldehyde group. The carbazole moiety forms a dihedral angle of 72.8 (1)° with the nitro-substituted benzene ring. The O atom of the meth-oxy group deviates by 0.186 (1) Å from the adjacent carbazole moiety. The phenyl-sulfonyl group f...

2010
Zhonghui Gai Xiaoyu Wang Xiaorui Liu Cui Tai Hongzhi Tang Xiaofei He Geng Wu Zixin Deng Ping Xu

BACKGROUND Carbazole is a recalcitrant compound with a dioxin-like structure and possesses mutagenic and toxic activities. Bacteria respond to a xenobiotic by recruiting exogenous genes to establish a pathway to degrade the xenobiotic, which is necessary for their adaptation and survival. Usually, this process is mediated by mobile genetic elements such as plasmids, transposons, and insertion s...

2011
R. Archana E. Yamuna K. J. Rajendra Prasad A. Thiruvalluvar R. J. Butcher

The title compound, C(21)H(17)N(3)O(2), crystallizes with two mol-ecules in the asymmetric unit. The carbazole groups show relatively small deviations from planarity [maximum displacements from the mean carbazole plane are 0.077 (7) and 0.101 (7) Å]. The dihedral angles between the 3-nitro-benzyl-idene-amine and carbazole groups are 37.9 (1) and 37.0 (1)° in the two mol-ecules.

2008
Duan-Lin Cao Jian-Lan Cui Wei Mao

In the title compound, C(23)H(21)Br(2)N, which was synthesized by the N-alkyl-ation of 1-tert-butyl-4-(chloro-meth-yl)benzene with 3,6-dibromo-9H-carbazole, the asymmetric unit contains two unique mol-ecules. Each carbazole ring system is essentially planar, with mean deviations of 0.0077 and 0.0089 Å for the two mol-ecules. The carbazole planes make dihedral angles of 78.9 (2) and 81.8 (2)° wi...

2010
Ding-Qiang Lu Jia Chen Wen-Yuan Wu Xiu-Quan Ling Ya-Jun Chang

In the title compound, C(15)H(13)NO(2), all atoms of the carbazole group are coplanar (r.m.s. deviation = 0.005 Å), and the dihedral angle between this plane and C-O-C plane of oxane group is 57.1 (4)°. The crystal packing is stabilized by an N-H⋯O hydrogen bond, resulting in infinite supra-molecular chains along [001].

Journal: :Journal of AOAC International 2001
N B Kyriakidis E Psoma

In the colorimetric determination of pectin by the carbazole method, some of the interfering compounds have been identified but the possible interference of different hydrocolloids is not known. Several hydrocolloids are currently used in the preparation of imitation and adulterated orange juice for cloud stabilization. Hydrocolloids studied were gum arabic, carboxylmethyl cellulose, sodium alg...

Journal: :ACS applied materials & interfaces 2009
Ming-Han Tsai Tung-Huei Ke Hao-Wu Lin Chung-Chih Wu Shih-Feng Chiu Fu-Chuan Fang Yuan-Li Liao Ken-Tsung Wong Yu-Hung Chen Chih-I Wu

Carbazole-based materials adopting the nonconjugated substitution of triphenylsilyl (-SiPh(3)) and trityl (-CPh(3)) side groups are studied as high-triplet-energy, morphologically, and electrochemically stable host materials with tunable carrier-transport properties for organic blue electrophosphorescence. The developed host materials 9-(4-tert-butylphenyl)-3,6-bis(triphenylsilyl)-9H-carbazole ...

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