654676-12-7Relevant articles and documents
A New Conducting Copolymer Bearing Electro-Active Nitroxide Groups as Organic Electrode Materials for Batteries
Assumma, L.,Dubois, L.,Gutel, T.,Kervella, Y.,Maurel, V.,Mendez, M.,Mouesca, J.-M.,Sadki, S.
, p. 2419 - 2427 (2020)
To reduce the amount of conducting additives generally required for polynitroxide-based electrodes, a stable radical (TEMPO) is combined with a conductive copolymer backbone consisting of 2,7-bisthiophene carbazole (2,7-BTC), which is characterized by a high intrinsic electronic conductivity. This work deals with the synthesis of this new polymer functionalized by a redox nitroxide. Fine structural characterization using electron paramagnetic resonance (EPR) techniques established that: 1) the nitroxide radicals are properly attached to the radical chain (continuous wave EPR) and 2) the polymer chain has very rigid conformations leading to a set of well-defined distances between first neighboring pairs of nitroxides (pulsed EPR). The redox group combined with the electroactive polymer showed not only a very high electrochemical reversibility but also a perfect match of redox potentials between the de-/doping reaction of the bisthiophene carbazole backbone and the redox activity of the nitroxide radical. This new organic electrode shows a stable capacity (about 60 mAh g?1) and enables a strong reduction in the amount of carbon additive due to the conducting-polymer skeleton.
Multi-photon properties in various condensed phases of dendritic chromophores derived from carbazole and indenoquioxaline units: Synthesis and characterization
Lin, Tzu-Chau,Chien, Wei,Dai, Shu-Wen,Lin, Hao-Wu,Liu, Yueh-Ching
, p. 140 - 150 (2019/05/01)
We have used functionalized carbazoles and indenoquonoxalines as the main building units and enthynyl groups as the π-linkages to construct two novel dendritic fluorophores and studied their degenerate multi-photon absorption properties in both the solution phase and the neat-film state within femtosecond and nanosecond regions. In our experiments, these model compounds are found to manifest strong and widely dispersed two-photon absorption as well as effective power-limiting properties against ultra-short laser pulses in the near-IR region. In addition, both chromophores exhibit medium to strong three-photon-induced fluorescence, indicating such scaffold may serve as a reference structural motif for the development of three-photon materials.
N,N'-diphenyl-N,N'-di(9,9-dimethyl fluorene-2-yl)-N-hexyl-(4,4'-diamine phenyl) carbazole and synthetic method thereof
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Paragraph 0009; 0025; 0026; 0027, (2016/10/08)
The invention discloses N,N'-diphenyl-N,N'-di(9,9-dimethyl fluorene-2-yl)-N-hexyl-(4,4'-diamine phenyl) carbazole and a synthetic method thereof and belongs to the field of organic synthesis. According to the synthetic method, 2,7-dibromo-carbazole is used as a raw material and subjected to N-alkylation and a Suzuki coupled reaction to synthesize 2,7-di(4-bromophenyl)-N-hexyl carbazole; 2-bromo-9,9-dimethyl fluorene and aniline are used as raw materials and subjected to a Buchwald-Hartwig coupled reaction to synthesize 9,9-dimethyl-N-phenyl fluorine-2-amine; lastly, 2,7-di(4-bromophenyl)-N-hexyl carbazole and the 9,9-dimethyl-N-phenyl fluorine-2-amine are used as raw materials and subjected to a Buchwald-Hartwig coupled reaction to synthesize a target compound. The target compound has good heat stability and glass transition temperature and is suitable for hole transport materials of organic light-emitting devices.