Macromolecular stereochemistry. The first observations of cholesteric polyisocyanates; searching for expected preferred chiral conformations induced by cholesteric liquid crystals in otherwise optically inactive substances

Mark M. Green, Brian Christiani, Christopher Andreola

Research output: Contribution to journalConference articlepeer-review

Abstract

We have discovered an extreme sensitivity of the helix sense ratio in wormlike polyisocyanates to chiral perturbations from the side chain. In the situation of a homogenious chiral influence the cooperation responsible for this effect can be treated by statistical thermodynamics which can reveal the exact responsible energy terms. This analysis predicts that even tiny fractions of a calorie per mole of residues can cause a measureable, by optical activity, excess of one helical sense.

Original languageEnglish (US)
Pages (from-to)453-454
Number of pages2
JournalAmerican Chemical Society, Polymer Preprints, Division of Polymer Chemistry
Volume32
Issue number1
StatePublished - Apr 1991
EventPapers presented at the Atlanta Meeting 1991 of the ACS, Division of Polymer Chemistry - Atlanta, GA, USA
Duration: Apr 14 1991Apr 19 1991

ASJC Scopus subject areas

  • Polymers and Plastics

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