Abstract

Meso-meso linked strapped diporphyrins S(n)(n = 10, 8, 6, 4, 3, 2, and 1) were synthesized by intramolecular Ag(I)-promoted coupling of dioxymethylene-bridged diporphyrins B(n). With decrease of strap length, the absorption and fluorescence spectra and the one-electron oxidation potentials of S(n) changed in a systematic manner, suggesting a progressive increase in electronic communication of two porphyrins.

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