The Journal of Physical Chemistry

Ion-responsive fluorescent compounds. 2. Cation-steered intramolecular charge transfer in a crowned merocyanine

J Bourson, B Valeur

Index: Bourson, Jean; Valeur, Bernard Journal of Physical Chemistry, 1989 , vol. 93, # 9 p. 3871 - 3876

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Citation Number: 238

Abstract

The dimethylamino group of DCM (4-dicyanomethylene-2-methyl-6-[p-(dimethylamino) styryl]-4H-pyran), a well-known merocyanine often used as a laser dye, has been replaced by a macrocycle (monoaza-15-crown-5) which acts also as an electron-donating substituent. The resulting fluoroionophore (DCM-crown) has almost identical photophysical properties as DCM, but upon complexation by alkaline-earth-metal cations, it undergoes drastic ...