960化工网
Novel polyimides containing flexible carbazole blocks with electrochromic and electrofluorescencechromic properties†
Rongrong Zheng,Tao Huang,Zhipeng Zhang,Zhiyao Sun,Haijun Niu,Cheng Wang,Wen Wang
RSC Advances Pub Date : 02/14/2020 00:00:00 , DOI:10.1039/C9RA10515H
Abstract

A series of polyimides (PIs) were prepared by polycondensation of a diamine monomer with five anhydrides (1,2,4,5-benzenetetracarboxylic anhydride (BTA), 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTD), 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BTD), 4-[(1,3-dihydro-1,3-dioxo-5-isobenzofuranyl)oxy]-1,3-isobenzofurandione (DDII), and 3,3′,4,4′-benzophenonetetracarboxylic dianhydride (BPTD)), which have anodic electrochromic (EC) properties. These PIs not only show good solubility and thermal stability, but also demonstrate stable electrochemical oxidation behavior and good EC properties, and the highest retained electroactivity reaches 99% after 600 cycles. In addition, the series of PIs exhibit excellent electrofluorescencechromic (EFC) properties. Therefore, the novel materials will contribute to the application of EC or EFC displays in the future.

Graphical abstract: Novel polyimides containing flexible carbazole blocks with electrochromic and electrofluorescencechromic properties
平台客服
平台客服
平台在线客服