Chiral properties of a water soluble reversible pH dependent supramolecular complex between an atropisomerically labeled poly(methacrylic acid) and a cyclodextrin

Mark M. Green, Gerald Schultz, Salil K. Jha, Herbert Morawetz, Herman F. Mark

Research output: Contribution to journalConference article

Abstract

In water solution at any pH no circular dichroism is observed in the chromophore of the binaphthyl group centered at near to 220 nm but this is immediately changed on addition of either beta or gamma cyclodextrin. In either case a large circular dichroism signal appears arises from an induced optical activity comparable to naphthalene itself. With beta cyclodextrin the signal is unchanged with the time while with the gamma cyclodextrin the signal increases with a half life of near 30 hours at 6.9 pH. This observation of the induced circular dichroism and the following increase with the time shows an interesting pH dependence.

Original languageEnglish (US)
Pages (from-to)505-506
Number of pages2
JournalAmerican Chemical Society, Polymer Preprints, Division of Polymer Chemistry
Volume37
Issue number2
StatePublished - Aug 1996
EventProceedings of the 1996 ACS Orlando Meeting - Orlando, FL, USA
Duration: Aug 25 1996Aug 29 1996

ASJC Scopus subject areas

  • Polymers and Plastics

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