Helical superstructures and related spectral changes of bilayer membranes of a single-chain, phosphate amphiphile

Toyoki Kunitake, Jong Mok Kim, Yuichi Ishikawa

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

The aggregation behaviour and spectroscopic properties of a single-chain phoshate amphiphile possessing a chiral centre and an azobenzene chromophore have been examined. At neutral and alkaline pH, the bilayer dispersion contained helical structures and red-shifted (bathochromic) absorptions and enhanced CD spectra were observed under the conditions where this helical structure was formed. These morphological and spectral changes are explained in terms of ordering and hydrogen-bonded interactions at the bilayer surface. Effects of amines and metal-ion salts are similarly explained; in particular the strong binding of Ca2+ ions is thought to be due to the ordering of the surface phosphate groups.

Original languageEnglish
Pages (from-to)885-890
Number of pages6
JournalJournal of the Chemical Society, Perkin Transactions 2
Issue number6
DOIs
Publication statusPublished - Jan 1 1991

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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