Synthesis and Properties of Poly(Isothianaphthene Methine)s with Chiral Alkyl Chain

Materials (Basel). 2012 Feb 16;5(2):317-326. doi: 10.3390/ma5020317.

Abstract

We synthesized poly(isothianaphthene methine)s with chiral alkyl chains in the substituent. Resultant polymers are soluble in THF and CHCl₃. Structure of the polymers was characterized with FT-IR, FT-Raman, and UV-Vis-NIR optical absorption spectroscopy. They showed low-bandgap both in solution and in a form of film. Optical activity of the polymers was confirmed with optical rotatory dispersion. Doping effects on the polymer were also examined with UV-Vis-NIR spectroscopy and ESR measurement.

Keywords: chiroptical activity; isothianaphthene; low-bandgap polymer; π-conjugated polymer.