Conjugated polymers atypically prepared in water

• Published in: Journal of polymer science. Part A, Polymer chemistry Vol. 48; no. 9; pp. 2024 - 2031
• Main Authors: Invernale, Michael A, Pendergraph, Samuel A, Yavuz, Mustafa S, Ombaba, Matthew, Sotzing, Gregory A
• Format: Journal Article
• Language: English
• Published: United States Wiley Subscription Services, Inc., A Wiley Company 01.05.2010
• ISSN: 0887-624X; 1099-0518
• DOI: 10.1002/pola.23972

Processability remains a fundamental issue for the implementation of conducting polymer (CP) technology. A simple synthetic route toward processable precursors to CPs (main chain and side chain) was developed using commercially available materials. These soluble precursor systems were converted to conjugated polymers electrochemically in aqueous media, offering a cheaper and greener method of processing. Oxidative conversion in aqueous and organic media each produced equivalent electrochromics. The precursor method enhances the yield of the electrochromic polymer obtained over that of electrodeposition, and it relies on a less corruptible electrolyte bath. However, electrochemical conversion of the precursor polymers often relies on organic salts and solvents. The ability to achieve oxidative conversion in brine offers a less costly and a more environmentally friendly processing step. It is also beneficial for biological applications. The electrochromics obtained herein were evaluated for electronic, spectral, and morphological properties.