A novel quinoxaline-based donor-acceptor type electrochromic polymer

Publication date: Available online 10 November 2018Source: Journal of Industrial and Engineering ChemistryAuthor(s): Ji Young Lee, Song-Yi Han, Bogyu Lim, Yoon-Chae NahAbstractWe synthesize a quinoxaline-based novel conjugated donor–acceptor random copolymer containing benzodithiophene and 2,5-difluorophenylenedithiophene units as electron donors (coded r-PQ) and investigate the electrochromic properties of the material. Despite its high molecular weight, r-PQ is highly soluble in organic solvents owing to the side chain of alkoxy at the meta-position of the phenyl ring. The r-PQ film exhibits excellent redox-promoted blue to transmissive-state color switching with high coloration efficiency ( > 250 cm2/C) and a fast response time (< 0.5 s). These results suggest that our quinoxaline-based random copolymer could be a promising candidate as an organic electrochromic material.Graphical abstract

Source: Journal of Industrial and Engineering Chemistry - November 11, 2018 Category: Chemistry Source Type: research