Naphthalenediimide bridged D-A polymers: Design, synthesis and electrochromic properties

被引:21
作者
Sefer, Emre [1 ,2 ]
Koyuncu, Fatma Baycan [1 ,2 ]
机构
[1] Canakkale Onsekiz Mart Univ, Fac Sci & Arts, Dept Chem, TR-17020 Canakkale, Turkey
[2] Canakkale Onsekiz Mart Univ, Polymer Mat Res Lab, TR-17020 Canakkale, Turkey
关键词
Electrochromic polymers; Naphthalenedimiide; 3,4-ethylenedioxythiophene; Thiophene; DIIMIDE SEMICONDUCTORS; DERIVATIVES; SYSTEMS; CELLS; FILMS;
D O I
10.1016/j.electacta.2014.08.019
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
We have synthesized two new D-A electrochromic polymers; poly(N,N'-bis(2-hexyl)-2,6-dithiophene-1,4,5,8-naphthalenediimide) (PTNDI) and poly(N,N'-bis(2-hexyl)-2,6-(3,4-ethylenedioxythiophene)-1,4,5,8-naphthalenedimiide) (PENDI) bearing a naphthalenedimiide chromophore in the backbone. Structural characterization of initial compounds and products were carried out by using FT-IR and H-1-NMR spectroscopies. The optical and electrochemical properties of these polymers were investigated by UV-Vis absorption spectroscopy and cyclic voltammetry, respectively. The results of spectroelectrochemical studies indicate that both polymers reveal various colors due to ambipolar redox behavior at cathodic and anodic regime. Both polymer films have reasonable redox stability (in the range of 75-80% after 1000 cycles), coloration efficiency (in the range of 80-100 cm(2) C-1), and response time (approx. 1s). Moreover, it is clearly seen that replacing donor unit from thiophene to EDOT results in change only in neutral state color. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:106 / 113
页数:8
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