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Synfacts 2011(2): 0160-0160  
DOI: 10.1055/s-0030-1259248
Synthesis of Materials and Unnatural Products
© Georg Thieme Verlag Stuttgart ˙ New York

Black to Transmissive Electrochromic Polymers

Contributor(s): Timothy M. Swager, Shuang Liu
P. Shi, C. M. Amb, E. P. Knott, E. J. Thompson, D. Y. Liu, J. Mei, A. L. Dyer, J. R. Reynolds*
University of Florida, Gainesville, USA
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Publication History

Publication Date:
19 January 2011 (online)

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Significance

Black to transmissive electro­chromic polymers are prepared via reproducible random polymerization of substituted 3,4-propylenedioxythiophene and 2,1,3-benzothiadiazole moieties. The resulting donor-acceptor polymers absorb uniformly across the visible spectrum (400-700 nm), therefore showing a black color in the neutral state. Upon oxidation, the absorption shifts into the infrared region and the polymers ­become transmissive. Spray-cast polymer thin films exhibit high transmission contrast, short ­response time, and long-term stability.