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Pure Appl. Chem., 2003, Vol. 75, No. 8, pp. 1077-1084

Cation-dependent photochromic properties of novel ditopic receptors

O. A. Fedorova, Y. V. Fedorov, E. N. Andrjukhina, S. P. Gromov and M. V. Alfimov

Photochemistry Center of Russian Academy of Sciences, Novatorov str., 7a, Moscow, 119421, Russia

Abstract: Novel crown-containing 2-styrylbenzothiazoles were prepared to obtain optical ditopic receptors that can bind alkaline-earth metal cations by a crown ether fragment and could serve as host for the heavy metal cations and proton owing to the presence of the heterocyclic part. Photochemical transformations of the ditopic receptors depend on the type of metal cations present in solution. They include trans–cis-isomerization, [2+2]-cycloaddition, and electrocyclic reaction.