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Photochromism of a diarylethene derivative in aqueous solution capping with a water-soluble nano-cavitand

Paper ID Volume ID Publish Year Pages File Format Full-Text
27300 44015 2009 4 PDF Available
Title
Photochromism of a diarylethene derivative in aqueous solution capping with a water-soluble nano-cavitand
Abstract

A photochromic diarylethene, 1,2-bis(3-methyl-2-thienyl)perfluorocyclopentene (1) was encapsulated into water-soluble nano-cavitand 2 to induce the photochromic performance in aqueous solution. 1H NMR measurements confirmed the formation of 1:1 complex between 1 and 2 in a D2O solution. Upon irradiation with UV and visible light, encapsulated diarylethene within nano-cavitand exhibited reversible and efficient photochromic reactions even in the aqueous solution. The photocyclization and photocycloreversion quantum yields are almost similar to those observed in organic solvents. The efficient photochromic performance of the diarylethene in aqueous solution is attributed to the fact that the empty pore of 2 selectively captures the hydrophobic perfluorocyclopentene moiety and the reactive thiophene moieties are free from the cavity, as evidenced by 1H NOESY measurement.

Keywords
Photochromism; Diarylethene; Nano-cavitand; Water-soluble
First Page Preview
Photochromism of a diarylethene derivative in aqueous solution capping with a water-soluble nano-cavitand
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 207, Issue 1, 5 September 2009, Pages 28–31
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering