نتایج جستجو برای: carbazole

تعداد نتایج: 1806  

Journal: :Open glycoscience 2008
Sarah B Frazier Kevin A Roodhouse Dennis E Hourcade Lijuan Zhang

Glycosaminoglycans (GAGs) are linear polysaccharides that are found in the extracellular matrix and biological fluids of animals where they interact with hundreds of proteins and perform a variety of critical roles. There are five classes of animal GAGs: heparan sulfate (HS), chondroitin sulfate (CS), dermatan sulfate (DS), keratan sulfate (KS), and hyaluronan (HA). Many biological functions ca...

Journal: :Organic & biomolecular chemistry 2010
Yuanhong Zhang Junjie Wang Pengfei Jia Xiaoqiang Yu Heng Liu Xin Liu Ning Zhao Baibiao Huang

Three carbazole dicationic salts, namely 3,6-bis(1-methyl-4-vinylpyridinium) carbazole diiodide (BMVC), 9-ethyl-3,6-bis(1-methyl-4-vinylpyridinium) carbazole diiodide (9E-BMVC) and 9-ethyl-3,6-bis(1-hydroxyethyl-4-vinylpyridinium)carbazole diiodide (9E-BHVC), were synthesized successfully. Their photophysical properties were evaluated by absorption, one- and two-photon fluorescence spectra, and...

2009
Tuncer Hökelek Hakan Dal Barış Tercan Sibel Gülle Yavuz Ergün

In the title compound, C(22)H(19)NO(5)S, the carbazole skeleton is nearly planar [maximum deviation = 0.043 (1) Å] with the pyrrole ring oriented at dihedral angles of 2.32 (6) and 1.77 (6)° with respect to the adjacent benzene rings. The dihedral angle between the benzene ring of the tosyl group and the carbazole skeleton is 82.25 (5)°. Intra-molecular O-H⋯O hydrogen bonding results in the for...

2008
Chengyu Huang Guoqian Jiang Rigoberto Advincula

Nanostructured ultrathin films of pendant carbazole-modified polyelectrolytes were fabricated using the layer-by-layer deposition technique in order to correlate the importance of highly ordered structures and well-defined layer composition in electrochemical cross-linking and nanopatterning. Both UV-vis and surface plasmon resonance (SPR) spectroscopy studies indicated differences in the film ...

2010
Jean-François Lohier Anna Caruso Jana Sopková-de Oliveira Santos Jean-Charles Lancelot Sylvain Rault

The title compound, C(19)H(20)BrNO(2), consists of a carbazole skeleton with methyl groups at positions 1 and 4, a protecting group located at the N atom and a Br atom at position 6. The pyrrole ring is oriented at dihedral angles of 1.27 (7) and 4.86 (7)° with respect to the adjacent benzene rings. The dihedral angle between the benzene rings is 5.11 (7). The crystal structure is determined ma...

2011
S. Vasudhevan R. Joel Karunakaran

In the title compound, C(27)H(19)NO(2)S, the naphtho-carbazole unit is approximately planar (r.m.s. deviation = 0.002 Å) except for the N atom, which is displaced by 0.122 (1) Å out of the mean plane. The dihedral angle between the naphtho-carbazole mean plane and the phenyl ring of the phenyl-sulfonyl substituent is 83.16 (3)°. An inter-molecular C-H⋯π inter-action involving the phenyl group a...

2011
Jing-Ya Zhang Wei-Yi Zhang

The asymmetric unit of the title compound, C(26)H(28)BrN, contains two independent mol-ecules in which the carbazole rings are almost planar, with r.m.s. deviations of 0.0212 (1) and 0.0229 (1) Å. The dihedral angles between the carbazole ring system and the pendent benzene ring are 60.5 (1) and 56.3 (1)° in the two mol-ecules. In the crystal, mol-ecules are linked into chains along the b axis ...

In this study, immobilized CuAlO2 onto the ZSM-12&35 composite was prepared and used as a photocatalyst to remove N-containing oil pollutants (Carbazole) through advanced oxidation. In this method, acetone is used as a reaction solvent that can be partially converted to fuel oxygenates compounds (Octane enhancers) through an aldol condensation reaction. Photocatalyst characterization was perfor...

Journal: :European Polymer Journal 2022

5,12-Dihydroindolo[3,2-a]carbazole is a polycyclic structure combining in its scaffold two carbazole moieties sharing fused aromatic ring. Since the pioneering works reported 2019 on this concerning substitution of carbazoles by similar functional groups, no recent investigation has been devoted to asymmetrize carbazoles. In work, series 13 compounds based 5,12-dihydroindolo[3,2-a]carbazole pre...

Journal: :Chemical communications 2012
Preecha Moonsin Narid Prachumrak Ratanawalee Rattanawan Tinnagon Keawin Siriporn Jungsuttiwong Taweesak Sudyoadsuk Vinich Promarak

Carbazole dendrimers up to 4th generation were synthesized. They showed significantly high T(g), amorphous and stable electrochemical properties, and great potential as solution processed hole-transporting materials for OLEDs. Alq3-based green devices exhibited high luminance efficiency and CIE coordinates of 4.45 cd A(-1) and (0.29, 0.53), respectively.

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