255829-38-0Relevant articles and documents
Dopant-Free Hole-Transporting Polycarbazoles with Tailored Backbones for Efficient Inverted Perovskite Solar Cells
Xie, Yuanyuan,Wang, Xuxian,Chen, Qing,Liu, Sizhou,Yun, Yikai,Liu, You,Chen, Cheng,Wang, Jungan,Cao, Yezhou,Wang, Fangfang,Qin, Tianshi,Huang, Wei
, (2019)
Three conjugated polymers based on different linkage sites of carbazole repeat units, 3,6-PCzTPA, 2,7-PCzTPA, and 3,6-2,7-PCzTPA, were obtained through judicious molecular engineering. We observed that structure differences between 2,7- and 3,6-carbazole linkage sites could significantly influence intra- and intermolecular architectures and electronic states of materials. Herein, 3,6-PCzTPA and 3,6-2,7-PCzTPA with 3,6-carbazole units exhibited higher hole mobilities owing to the formation of radical cations, compared to 2,7-PCzTPA with 2,7-carbazole units. As a result, by using 3,6-2,7-PCzTPA as the hole-transporting material, perovskite solar cells with the p-i-n structure demonstrated the highest power conversion efficiency up to 18.4%. The outstanding device performance originated from compositive values of open-circuit voltage and fill factor, which were attributed to the suitable energy level as well as a high hole mobility of 3,6-2,7-PCzTPA. Moreover, its straightforward synthesis strategy, fine film-formation ability, and nondopant requirement indicated 3,6-2,7-PCzTPA as an ideal hole-transporting material for perovskite solar cells.
One-pot two-step synthesis of: N -arylcarbazole-based skeleton
Tao, Sheng,Liu, Ning,Dai, Bin
, p. 43250 - 43260 (2016/05/24)
A highly site-selective, one-pot, sequential C-N and C-C bond forming process was developed, affording a carbazole-based skeleton that contains biphenyl and diarylacetylene cores. The success of this process is attributed to the use of fluorinated iodoarenes as the starting material, the fluorine group of which preferentially reacts with carbazole. The subsequent coupling of the intermediate iodinated N-arylcarbazole with arylboronic acid or arylacetylene produced the desired products. The intermediate underwent a Pd-catalyzed Ullmann coupling with excess fluorinated iodoarenes in the absence of arylboronic acid or arylacetylene, resulting in Ullmann coupling products in a one-pot process.
Carbazole-based conjugated polymer covalently coated Fe3O 4 nanoparticle as efficient and reversible Hg2+ optical probe
Tian, Yong,Shi, Wei,Luo, Jianmin,Ma, Fudong,Mi, Hongyu,Lei, Yanli
, p. 3636 - 3645 (2013/09/02)
A type of fluorescent-magnetic dual-function nanocomposite, Fe 3O4@SiO2@P-2, was successfully obtained by Cu+-catalyzed click reaction between acetylene (C?￡C? ￡?H)-substituted carbazole-based conjugated polymer
