Synthesis, fluorescence, electrochromic properties of aromatic polyamide with triarylamine unit serving as functional group. (August 2017)

• Record Type: Journal Article
• Authors: Wang, Shuzhong; Wu, Xiaotong; Zhang, Xu; Niu, Haijun; Wang, Cheng; Zhang, Yanhong; Bai, Xuduo; Wang, Wen; Hou, Yanjun
• Is Part Of: European polymer journal. Volume 93(2017)
• Page Start: 368
• Page End: 381
• Publication Date: 2017-08
• Subjects: Polyamide -- Triarylamine -- Electrochromic material; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; Polymerization; Polymers; Periodicals; Electronic journals; 547.705
• DOI: 10.1016/j.eurpolymj.2017.06.014
• Languages: English
• ISSNs: 0014-3057

Abstract

Graphical abstract: Electronic absorption spectra of PAPBD-P thin film and its 3D spectra upon the increasing voltage. Highlights: Some PAs were synthesized and showed excellent electrochromic stability. The Energy gap (Eg ) can be tuned by the structure of acid, as well as amine. The influence of the film's morphology on the coloring efficiency was discussed. The EIS of the PAs were measured and showed they have good electric conductivity. Abstract: Two series of novel aromatic polyamides (PAs) were synthesized via polymer condensation reaction based on N, N'-bis(4-aminophenyl)-N, N'-di-1-naphthalenyl-[1, 1′-biphenhyl]-4, 4′-diamine, N, N'-bis(4-aminophenyl)-N, N'-diphenyl-4, 4′-biphenyl diamine and different binary acids compounds. The structures of the monomers and polymers were characterized by Fourier transform infrared spectroscopy (FT-IR), hydrogen nuclear magnetic resonance ( 1 H NMR). The electrochromic properties of the PAs were investigated by using the ultra-visible-near infrared (UV–Vis–NIR) spectrophotometer and electrochemical workstation. The color of the polymer films changed from light yellowish to brown, then atroceruleous or brilliant blue with an increasing potential. Then we discussed the relationship of morphology on coloration efficiency. The electrochemical impedance spectroscopy (EIS) also has been used to characterize the internal resistances of PAs film electrodes.