Nippon Telegraph and Telephone Corporation

Japan Science and Technology Corporation

Hiromi Tamoto

Hiroshi Nakashima

Masao Morita

Michiya Fujiki

Julian R Koe

Novel polythiophenes which exhibit strong main chain absorption in the ultraviolet to visible region, show optical activity depending on the polymeric chain alone, and comprise as repeating units thiophene rings containing chiral substituent groups, and are represented by the following general formula:(wherein Rand Rare the same or different, each representing a hydrogen atom or an organic group, of which at least one is an enantiopure alkyl group with a branch structure at the &#x3b2;-position, and n represents the number of repeating units selected from 10 to 100,000).

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Kanagawa, Japan

Hiromi Tamoto