Modular Approach toward Supramolecular Functional Assemblies: Remote Control of Fluorescence.

A supramolecular Zn-porphyrin-free-base porphyrin dyad, in which efficient energy transfer occurs, was constructed. The energy-transfer process can be switched on and off by replacing an axial ligand on the Zn-porphyrin, making it possible to remotely control fluorescence from the free-base porphyrin. An implication to logic gates is discussed. [ABSTRACT FROM AUTHOR]
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