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Materials 2016, 9(9), 779; doi:10.3390/ma9090779

Multichromic Polymers Containing Alternating Bi(3-Methoxythiophene) and Triphenylamine Based Units with Para-Protective Substituents

1
State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266555, China
2
Dongchang College, Liaocheng University, Liaocheng 252059, China
3
Shandong Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng 252059, China
*
Author to whom correspondence should be addressed.
Academic Editor: Federico Bella
Received: 11 August 2016 / Revised: 7 September 2016 / Accepted: 12 September 2016 / Published: 19 September 2016
(This article belongs to the Section Structure Analysis and Characterization)
View Full-Text   |   Download PDF [11394 KB, uploaded 19 September 2016]   |  

Abstract

Two novel triphenylamine-based thiophene derivative monomers, 4-cyano-4′,4″-di(4-methoxythiophen-2-yl)triphenylamine and 4-methoxy-4′,4″-di(4-methoxythiophen-2-yl)triphenylamine, were successfully synthesized. The corresponding polymers including poly (4-cyano-4′,4″-di(4-methoxythiophen-2-yl)triphenylamine) and poly (4-methoxy-4′,4″-di(4-methoxythiophen-2-yl)triphenylamine) were electrochemically synthesized and characterized by multiple test method. The electrochemical measurements and spectroelectrochemical analyses revealed that both of the two polymers had quasi-reversible redox behavior and multi-electrochromic properties. The two polymer films showed reversible electrochemical oxidation, excellent optical contrasts in NIR region (62% at 1070 nm for the first polymer, and 86% at 1255 nm for the second polymer), satisfactory coloration efficiencies and fast switching times. The research on the application of the as prepared polymer in the fabrication of electrochromic device was also conducted, employing PCMTPA or PMMTPA as the anodically coloring materials. View Full-Text
Keywords: 4-cyanotriphenylamine; 4-methoxytriphenylamine; bithiophenes derivatives; electrochromism; spectroelectrochemistry; electrochromic devices 4-cyanotriphenylamine; 4-methoxytriphenylamine; bithiophenes derivatives; electrochromism; spectroelectrochemistry; electrochromic devices
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Hou, Y.; Kong, L.; Ju, X.; Liu, X.; Zhao, J.; Niu, Q. Multichromic Polymers Containing Alternating Bi(3-Methoxythiophene) and Triphenylamine Based Units with Para-Protective Substituents. Materials 2016, 9, 779.

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