Investigation of photo-responsive chiral polyisocyanates

Jie Li, Gary B. Schuster, Mark M. Green

Research output: Contribution to journalConference articlepeer-review

Abstract

A new class of polyisocyanates incorporating the 8-phenylmethylenebicyclo [3.2.1]octan-3-one chromophore through three different linkage patterns to the polymer backbone was synthesized. Photoresolution and photoracemization experiments were conducted to test its response to circularly polarized light (CPL). Irradiation of the polymers with CPL leads to the partial photoresolution of the bicyclicketone chromophore. This enantiomeric excess causes the polyisocyanate chain to favor one helical sense over the other. The handedness of the polymer chain can be switched with the sense of the circularly polarized light, leading to novel photoresponsive polyisocyanates.

Original languageEnglish (US)
Pages (from-to)7-13
Number of pages7
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume344
DOIs
StatePublished - 2000
Event3rd International Symposium on Organic Photochromism (ISOP99) - Fukuoka, Jpn
Duration: Nov 14 1999Nov 18 1999

ASJC Scopus subject areas

  • Condensed Matter Physics

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