Green and Blue Electrochromic Polymers from Processable Siloxane Precursors

Autor:	Gregory A. Sotzing, Ki-Ryong Lee
Rok vydání:	2013
Předmět:	chemistry.chemical_classification Materials science General Chemical Engineering Solid-state General Chemistry Polymer Silane Precursor polymer chemistry.chemical_compound chemistry Electrochromism Siloxane Polymer chemistry Materials Chemistry Moiety Glass transition
Zdroj:	Chemistry of Materials. 25:2898-2904
ISSN:	1520-5002 0897-4756
DOI:	10.1021/cm401498f
Popis:	Herein we report the synthesis of a new class of processable siloxane precursor polymers consisting of aromatic groups and flexible siloxane linkages and their conversions to green and blue electrochromic polymers in the solid state. 3,4-Ethylenedioxythiophene (EDOT), 2,2′-bis(3,4-ethylenedioxythiophene) (BiEDOT), and a donor–acceptor moiety 4,7-bis(EDOT)-2,1,3-benzothiadiazole (BEBTD) were incorporated as aromatic groups to demonstrate the versatility of the precursor method to different aromatic systems. The utilization of a siloxane linkage allows for a precursor polymer exhibiting improved solubility in common organic solvents and accessible glass transition temperatures (−1 to 132 °C) as compared to a previously reported silane precursor. A simple method to control the thermal properties of the precursor was also demonstrated by incorporation of both siloxane and silane functionalities into the precursor backbone. The oxidatively converted product from the precursors showed electronic and optoelectro...
Databáze:	OpenAIRE
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