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Chiroptical Rhythmicity, Part 1: Description of a Novel Phenomenon

Ghebremariam, Bereket
Published in Enantiomer. 1999, vol. 4, no. 2, p. 121-130
Abstract A novel chiroptical phenomenon named "chiroptical rhythmicity" is described. Chiroptical rhythmicity consists of multiple reversible circular dichroism Cotton effect sign inversions that follow a rhythmical pattern with respect to the continuous addition of a ligand (L-His) to the sample (a septi(p-phenylene)-based receptor bound to phosphatidylcholine bilayers). Decrease and blue-shift of the 1La absorption of the oligophenylene chromophore indicated that partial "H" aggregation occurs during chiroptical rhythmicity. Based on stereochemical considerations for monomeric and tetrameric oligophenylenes, a hypothetical mechanism is discussed.
PMID: 10483714
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GHEBREMARIAM, Bereket, MATILE, Stefan. Chiroptical Rhythmicity, Part 1: Description of a Novel Phenomenon. In: Enantiomer, 1999, vol. 4, n° 2, p. 121-130.

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Deposited on : 2010-04-20

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