Cooperative proton-electron transfer in a supramolecular structure of meso-1,2-bis-(4-dimethylaminophenyl)-1,2-ethanediol and bis(4-cyanobenzylidene)ethylenediamine


  • This work was supported by the Fonds der Chemischen Industrie including a fellowship to I. S. Support by COSNET and IPN (Mexico) to A. R. A is gratefully acknowledged.


A supramolecular 1:1 complex of the title compounds undergoes light-induced cooperative proton-electron transfer which can be switched back by warming to 60°C. The complex (see Figure) is found to exhibit a unique from the photochromism, meaning that it could have potential in optical switching (with termal back switching) or optical data storage applications.

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