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 fluorescence and photocyclization assigned to a red-shifted absorption of the fluorescing conformer compared to the absorption of the photoreactive conformer.
Malval
Jean-Pierre
JP
Laboratoire d'Analyse Chimique par Reconnaissance Moléculaire, Ecole Nationale Supérieure de Chimie et de Physique de Bordeaux, 16 Avenue Pey Berland, 33607 Pessac Cedex France.
Gosse
Isabelle
I
Morand
Jean-Pierre
JP
Lapouyade
René
R