Photoinduced electron transfer in π-donor-capped Zn(II) porphyrins and N,N′-dimethyl-4,4′-bipyridinium supramolecular assemblies

Evgeny Kaganer, Ernesto Joselevich, Itamar Willner*, Zhangpin Chen, Maxwell J. Gunter, Throne P. Gayness, Martin R. Johnson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

π-Donor-polyoxyethylene-capped Zn(II)-porphyrins, 1-3, form supramolecular complexes with N,N′-dimethyl-4,4′-bipyridinium, MV2+, 4. The association constants of the resulting adducts are 8 × 104, 1 × 104, and 1 × 103 M-1, respectively. The Zn(II)-porphyrins are quenched by MV2+ by two complementary routes that include internal electron-transfer quenching in the supramolecular complexes and diffusional electron-transfer quenching of the free chromophore.

Original languageEnglish
Pages (from-to)1159-1165
Number of pages7
JournalJournal of Physical Chemistry B
Volume102
Issue number7
DOIs
StatePublished - 12 Feb 1998

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