Photoredox reactions in water-in-oil microemulsions. The functions of amphiphilic viologens in charge separation and electron transfer across a water-oil boundary

Daniel Mandler, Yinon Degani, Itamar Willner*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

The photosensitized reduction of the series of dialkyl-4,4′-bipyridinium salts, CnV2+, is examined in water-in-oil microemulsions, by using Ru(bpy)32+ as sensitizer and (NH4)3EDTA as electron donor. With the amphiphilic electron acceptors (n = 8-18) the water-in-oil microemulsion media affect the charge separation of the initial encounter cage complex, [Ru(bpy)23+⋯CnV+·], and stabilize the photoproducts, CnV+· and Ru(bpy)33+, against the recombination process. Consequently, enhanced quantum yields for CnV+· formation are observed under continuous illumination.

Original languageEnglish
Pages (from-to)4366-4370
Number of pages5
JournalJournal of Physical Chemistry
Volume88
Issue number19
DOIs
StatePublished - 1984

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