Involvement of triplet state in the photodissociation of hydrogen peroxide: experimental evidence from time-resolved EPR study

Authors: Bhattacharjee, B.¹; Das, Ranjan¹

Source: Molecular Physics, Volume 105, Number 8, April 2007 , pp. 1053-1057(5)

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Abstract:

The dissociation of photoexcited hydrogen peroxide to generate a pair of hydroxyl radicals is generally believed to take place in a repulsive electronic singlet state. The results presented here, based on time-resolved EPR experiments on the spin polarisation pattern of the acetone ketyl radical (CH3)2C•OH, generated on photodissociation of H2O2 in 2-propanol with a 248 nm laser light, strongly indicate significant involvement of a repulsive triplet state of excited hydrogen peroxide.

Document Type: Research article

DOI: 10.1080/00268970701275381

Affiliations: 1: Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai, 400005, India