Synthesis and electrochromic properties of a novel conducting polymer film based on dithiafulvenyl-triphenylamine-di(N-carbazole). (1st February 2016)

• Record Type: Journal Article
• Authors: Zhou, Ping; Wan, Zhongquan; Liu, Yanning; Jia, Chunyang; Weng, Xiaolong; Xie, Jianliang; Deng, Longjiang
• Is Part Of: Electrochimica acta. Volume 190(2016)
• Page Start: 1015
• Page End: 1024
• Publication Date: 2016-02-01
• Subjects: Electrochromism -- Dithiafulvenyl -- Carbazole -- Triphenylamine -- Polymer film; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.12.094
• Languages: English
• ISSNs: 0013-4686

Abstract

Graphical abstract: Highlights: A novel monomer dithiafulvenyl-triphenylamine-di(N-carbazole) was synthesized. The polymer film based on the monomer was electrochemically polymerized. The polymer film exhibits interesting electrochromic properties. The polymer film has color changing from light yellow to green to blue grey. The polymer film has a maximum optical contrast of 40%. Abstract: A strong dithiafulvenyl (DTF)-substitued triphenylamine (TPA) hybrid electron donor was introduced to N-position of carbazole (CBZ) successfully to synthesize the dithiafulvenyl-triphenylamine-di(N-carbazole) (DTF-TPA-DCBZ) monomer, then its polymer film (poly(DTF-TPA-DCBZ)) was deposited on ITO coated glass substrate by electrochemical polymerization through cyclic voltammetry. Spectroelectrochemical and electrochromic properties of the polymer film were measured through some commonly used methods: cyclic voltammetry, colorimetry, chronoamperometry, ultraviolet-visible and electrochemical impedance spectroscopy analysis. The deposited poly(DTF-TPA-DCBZ) is a multi-color electrochromic film, which has color changing from light yellow to green to blue grey reversibly when different voltages were applied. The polymer film has a broad absorption band at around 650 nm in the visible region, its coloring response time is 4 s and bleaching response time is 8 s. Coloration efficiency of the polymer film is 23.77 cm 2 C −1, meanwhile maximum optical contrast of the polymer film reaches to 40% at the wavelength of 658 nm.