کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
190567 459701 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A novel donor–acceptor polymeric electrochromic material containing carbazole and 1,8-naphtalimide as subunit
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
A novel donor–acceptor polymeric electrochromic material containing carbazole and 1,8-naphtalimide as subunit
چکیده انگلیسی

We report here the synthesis of a novel polymeric electrochromic material containing carbazole (Cbz)-donor and 1,8-napthalimide-acceptor as subunit. The band gap Eg was measured using UV–vis spectroscopy and compared with that obtained by cyclic voltammetry (CV). Due to intramolecular electron transfer from Cbz-donor to 1,8-napthalimide-acceptor, the fluorescence quenching was observed. When the spectro-electrochemical and electrochromic properties of polymer film were investigated, various tones of green color were obtained on the polymeric film. In the positive regime, the polymer film obtained thereby is dark green resulting from the association of carbazolylium cation radicals at oxidized state and then it can be bleached by electrochemical reduction. Besides, in the negative regime, yellowish green color of film converted to blue attributed to reduction of the 1,8-napthalimide moiety. Finally, the polymeric electrochromic exhibits multi-electrochromic behavior, high redox stability, high coloration efficiency and reasonable response time.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 55, Issue 17, 1 July 2010, Pages 4935–4941
نویسندگان
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