Reactive state selectivity in photodimerization through micellar counter-ion effects: photodimerization of acenaphthylenes

V. Ramesh, V. Ramamurthy

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Photodimerization of acenaphthylene and 5,6-dichloroacenaphthylene solubilized in sodium dodecylsulphate (SDS), cetyltrimethylammonium chloride (CTAC), dodecyltrimethylammonium chloride (DTAC), cetyltrimethylammonium bromide (CTAB) and Triton X-100 micelles gives a mixture of cis and trans dimers. The magnitude of the cis:trans ratio is sensitive to the type of micelle used. In CTAB micelles the heavy atom effect of the bromide counter-ions leads to an increased triplet-derived trans dimer yield, whereas in micelles with light atom counter-ions (CTAC, DTAC and SDS) the singlet-derived cis dimer predominates.

Original languageEnglish (US)
Pages (from-to)395-402
Number of pages8
JournalJournal of Photochemistry
Issue number4
StatePublished - Apr 1984


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