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Synthesis and Properties of Poly(Isothianaphthene Methine)s with Chiral Alkyl Chain
Institute of Materials Science, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
European Patent Office, Patentlaan 3-9, 2288 EE The Hague, The Netherlands
* Author to whom correspondence should be addressed.
Received: 29 December 2011; in revised form: 21 January 2012 / Accepted: 6 February 2012 / Published: 16 February 2012
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: π-conjugated polymer; low-bandgap polymer; isothianaphthene; chiroptical activity
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Innami, Y.; Kawashima, H.; Kiebooms, R.H.L.; Aizawa, H.; Matsuishi, K.; Goto, H. Synthesis and Properties of Poly(Isothianaphthene Methine)s with Chiral Alkyl Chain. Materials 2012, 5, 317-326.
Innami Y, Kawashima H, Kiebooms RHL, Aizawa H, Matsuishi K, Goto H. Synthesis and Properties of Poly(Isothianaphthene Methine)s with Chiral Alkyl Chain. Materials. 2012; 5(2):317-326.
Innami, Yu; Kawashima, Hirotsugu; Kiebooms, Rafaël H. L.; Aizawa, Hideaki; Matsuishi, Kiyoto; Goto, Hiromasa. 2012. "Synthesis and Properties of Poly(Isothianaphthene Methine)s with Chiral Alkyl Chain." Materials 5, no. 2: 317-326.