A Pure Blue to Highly Transmissive Electrochromic Polymer Based on Poly(3,4-propylenedioxyselenophene) with a High Optical Contrast Ratio

被引:44
作者
Karabay, Baris [1 ]
Pekel, Lutfiye Canan [1 ]
Cihaner, Atilla [1 ]
机构
[1] Atilim Univ, Dept Chem Engn & Appl Chem, Atilim Optoelect Mat & Solar Energy Lab ATOMSEL, TR-06836 Ankara, Turkey
关键词
COLORATION EFFICIENCY; POLY(3,4-ETHYLENEDIOXYSELENOPHENE); POLYSELENOPHENE; DERIVATIVES;
D O I
10.1021/acs.macromol.5b00022
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A new derivative of 3,4-propylenedioxyselenophene bearing naphthalenylmethyl appeandages on the bridge, called 3,4-dihydro-3,3-bis((naphthalen-2-yl)methyl)-2H-selenopheno[3,4-b][1,4]dioxepine (ProDOS-Np-2), was synthesized and polymerized via potentiostatic and potentiodynamic methods. The electrochemically obtained polymer film (PProDOS-Np-2) is pure blue at the neutral state and highly transparent at the oxidized state. An increase in the size of the substituents on the bridge resulted in an increase in the optical contrast ratio. Upon moving from naked bridge to benzyl and to naphthalenylmethyl substituents on the bridge center, the optical contrast changed from 51% to 65% and finally to 84%, which is the second highest reported optical contrast ratio in polyselenophene family. When compared to polythiophene analogue, the PProDOS-Np-2 has lower oxidation potential and band gap, higher optical contrast ratio, coloration efficiency, robustness, and stability. The polymer film preserved its properties even after thousands of cycles under ambient conditions.
引用
收藏
页码:1352 / 1357
页数:6
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