357437-74-2Relevant academic research and scientific papers
Functionalised carbazole as a cathode for high voltage non-aqueous organic redox flow batteries
Mirle, Chinmaya R.,M., Raja,P., Vasudevarao,S., Sankararaman,R., Kothandaraman
, p. 14401 - 14410 (2020/09/21)
Prospective high reduction potential cathode materials have been proposed that can be used in non-aqueous redox flow battery applications. A new class of material, 3,6-dibromo-9-(p-tolyl)-9H-carbazole(3)incorporating a carbazole core, showing a very good reversibility is employed as the cathode material and dissolved oxygen in the solvent mixture is used as the anolyte material. Labile positions of the carbazole have been substituted with electron withdrawing groups, which increases the reduction potential of the redox couple. Apart from substituting the labile positions, we have also explored the possible structural modification responsible for stabilizing the cation radical of the carbazole moiety and obtained the reversible behavior thereafter. From this, it is evident that a free radical is stabilized upon delocalization of the charge in the molecule. The mass-transport and redox parameters, diffusion coefficient and heterogeneous electron transfer rate coefficient values are high enough to realize good battery performance. A solvent mixture of acetonitrile and dichloromethane (4?:?1) has been used in this work in order to increase the solubility of electroactive materials in the medium.
Investigation of novel carbazole-functionalized coumarin derivatives as organic luminescent materials
Yu, Tianzhi,Zhu, Zeyang,Bao, Yanjun,Zhao, Yuling,Liu, Xiaoxiao,Zhang, Hui
, p. 260 - 269 (2017/08/23)
Four new carbazole-based coumarin derivatives comprising a carbazole core and one or two coumarin chromophores, 7-(diethylamino)-3-(4-(9-(p-tolyl)-9H-carbazol-3-yl)phenyl)coumarin (Cz-Ph-C) and 3,3'-((9-(p-tolyl)-9H-carbazole-3,6-diyl)bis(4,4′-phenyl))bis
An electronic transmission material and its preparation and device
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, (2017/10/14)
The invention provides carbazole-imidazole electron transport materials. Based on triphenyl imidazole and carbazole, a kind of classic compounds is formed by connecting triphenyl imidazole and carbazole with benzene of different substituent groups. A preparation method is based on improvement of existing methods. Through repeated verification, the preparation method is simple in synthesis and purification processes and low in cost and can meet the industrial development requirements. A device prepared by using the substances has high light emitting efficiency.
DICARBAZOLE AROMATIC AMINE POLYMERS AND ELECTRONIC DEVICES
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, (2009/04/24)
A conjugated or partially conjugated polymer comprising a structural unit of Formula I: I Wherein Ar1 is an aromatic group which contains one or more heteroatoms, or an aromatic group which comprises one or more fused aromatic or non-aromatic rings, said aromatic group may be substituted or unsubstituted; and R1 is alkyl, alkoxy, and aryl group, cyano, or F.
Synthesis and characterization of blue-light-emitting alternating copolymers of 9,9-dihexylfluorene and 9-arylcarbazole
Wong, Wai-Yeung,Liu, Li,Cui, Dongmui,Leung, Louis M.,Kwong, Chin-Fai,Lee, Tik-Ho,Ng, Ho-Fung
, p. 4970 - 4976 (2007/10/03)
Several soluble and well-defined copolymers of 9,9-dihexyl-2,7-fluorene and 9-aryl-3,6-carbazole (aryl = phenyl, p-methylphenyl, p-methoxyphenyl) were prepared in good yields by Suzuki-type coupling polymerization of fluorene-diboronic ester with some 9-a
A field-dependent organic LED consisting of two new high Tg blue light emitting organic layers: A possibility of attainment of a white light source
Cha, Soon Wook,Jin, Jung-Il
, p. 479 - 484 (2007/10/03)
Two new blue light emitting trimeric compounds of the Y-shape type having high glass transition temperatures were synthesized and EL behavior of LED devices consisting of bilayers of the two compounds was studied. One of the compounds is of hole-transporting type containing carbazole moieties, whereas the other is of electron-transporting type bearing phenyloxadiazole moieties. The bilayer LED devices exhibit a strong field-dependence and emit white light (simultaneous light-emittance in blue, green and red regions), at high applied electric fields. Increased interracial formation of exciplexes at stronger external fields appears to be responsible for this field-dependence.
