896452-73-6Relevant articles and documents
Novel triphenylamine polyamides bearing carbazole and aniline substituents for multi-colored electrochromic applications
Liu, Yu,Liu, Tingjun,Pang, Lifei,Guo, Jinyu,Wang, Jiuyang,Qi, Duo,Li, Wenze,Shen, Kunzhi
, (2019/11/03)
A novel carbazolyl-derived diamine containing triphenylamine, 4,4′-bis[(4-aminophenyl)amino]-4″-carbazolyltriphenylamine (VI), was prepared via the reduction of 4,4′-bis[(4-nitrophenyl)amino]-4″-carbazolyltriphenylamine. A series of novel polyamides (PAs,
Preparation and electrochromic properties of two series of polyurethanes containing separated triphenylamine moiety with different blocks
Ji, Yan,Zhang, Chunyu,Niu, Haijun,Zhao, Xiaofeng,Wang, Cheng,Qin, Chuanli,Wang, Wen,Bai, Xuduo
, p. 106 - 115 (2015/11/16)
Two series of novel aromatic polyurethanes containing triphenylamine derivatives were synthesized via polycondensation of 4-(3,6-diisocyanato-9H-carbazol-9-yl) aniline, N,N-bis(4-isocyanatophenyl) benzene-1,4-diamine with various dihydroxy monomers such as phenolphthalein, 2,2-bis (4-hydroxyphenyl) -propane, 4,4'-dihydroxybiphenyl, 4, 4'-bishydroxy benzophenone and bisphenolfluorene, respectively. The variation of the backbone structure affected the electronic properties, solubility, molecular weight and thermal stability of polyurethanes. The thermal stability of polyurethanes was studied by the gravimetric analyzer. The electrochromic performance was investigated by cyclic voltammograms and spectroelectrochemical methods, which showed stable and reversible electrochromic properties. Besides, the color of polyurethanes can be varied from initial colorless to green then to blue via electro-oxidation, which indicates the polyurethanes will have potential applications for eletrochromic materials. In addition, the PUs exhibited memory characteristic. The result indicated the PUs could be applied in smart window and memory devices.
Substituent effects on electrochemical and electrochromic properties of aromatic polyimides with 4-(carbazol-9-yl)triphenylamine moieties
Wang, Hui-Min,Hsiao, Sheng-Huei
, p. 1172 - 1184 (2014/03/21)
Three series of aromatic polyimides with 4-(carbazol-9-yl)triphenylamine moieties were prepared from the polycondensation reactions of 4,4′-diamino-4″-(carbazol-9-yl) triphenylamine (1), 4,4′-diamino-4″-(3,6-di-tert-butylcarbazol-9-yl)triphenylamine (t-Bu-1), and 4,4′-diamino-4″-(3,6-dimethoxycarbazol-9-yl) triphenylamine (MeO-1), respectively, with various commercially available tetracarboxylic dianhydrides. In addition to high thermal stability and good film-forming ability, the resulting polyimides exhibited an ambipolar electrochromic behavior. The polyimides based on t-Bu-1 and MeO-1 revealed higher redox-stability and enhanced electrochromic performance than the corresponding ones based on 1 because the active sites of their carbazole units are blocked with bulky t-butyl or electron-donating methoxy groups. 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 1172-1184 Three series of 4-(carbazol-9-yl)triphenylamine-based aromatic polyimides are prepared by polycondensation of corresponding diamines with various commercially available tetracarboxylic dianhydrides. All the polyimides afford flexible and tough films with high thermal stability. The polymer films show ambipolar redox and multicolored electrochromic behaviors. During the electro-oxidation processes, the polyimides with t-butyl or methoxy substituents on the pendent carbazole unit exhibit enhanced electrochemical stability and electrochemical performance, as compared with the coresponding parent polyimides, because the electrochemically active sites of carbazole are blocked. Copyright
