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Diphenylpolyene-cholesterol conjugates as fluorescent probes for microheterogeneous media

Paper ID Volume ID Publish Year Pages File Format Full-Text
25952 43924 2014 9 PDF Available
Title
Diphenylpolyene-cholesterol conjugates as fluorescent probes for microheterogeneous media
Abstract

•Cholesterol was covalently linked to donor–acceptor diphenylpolyenes.•Photophysical studies establish remarkable intramolecular charge transfer behaviour.•Probing microenvironments of micelles revealed bi-exponential decay profile indicating preferential interaction.

Extrinsically conjugated fluorescent diphenylpolyene cholesterol derivatives are synthesized and spectroscopic investigations in homogeneous and aqueous micellar solutions are described. The emission of these cholesterol conjugates reveals characteristic intra-molecular charge transfer (ICT) behaviour in homogeneous solvents with a mono-exponential decay. Spectroscopic evidence in micellar aqueous solutions reveals a bi-exponential decay. This indicates the presence of two preferred locations of the cholesterol conjugated diphenylpolyenes sites of lower polarity and interfacial sites. The sensitivity of these fluorophores was utilized to determine the critical micelle concentrations.

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Keywords
Fluorescent cholesterol; Intramolecular charge transfer; Determination of CMC
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Diphenylpolyene-cholesterol conjugates as fluorescent probes for microheterogeneous media
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 281, 1 May 2014, Pages 18–26
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Don't Miss Today's Special Offer
Price was $35.95
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