Photoswitching of Cation Complexation with A Monoaza-crown Dithienylethene Photochrome

A photochromic dithienylethene, bearing a phenyl azacrown as an ionophore and a formyl group as an electron-accepting substituent, changes its binding ability for Ca2+ by a factor higher than 103 by photoirradiation. This new photoionochromic displays a wavelength-dependent competition between fluor...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2002-02, Vol.124 (6), p.904-905
Main Authors: Malval, Jean-Pierre, Gosse, Isabelle, Morand, Jean-Pierre, Lapouyade, René
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Photochemistry
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
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Summary:A photochromic dithienylethene, bearing a phenyl azacrown as an ionophore and a formyl group as an electron-accepting substituent, changes its binding ability for Ca2+ by a factor higher than 103 by photoirradiation. This new photoionochromic displays a wavelength-dependent competition between fluorescence and photocyclization assigned to a red-shifted absorption of the fluorescing conformer compared to the absorption of the photoreactive conformer.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja0167203