Prompt and delayed photoejection of hydrated electrons in the UV photolysis of aqueous solutions of copper(I) complexes

Kenneth L. Stevenson, Pamela B. Bell, Ravi S. Dhawale, Ottó Horváth, Attila Horváth

Research output: Contribution to journalConference article

9 Citations (Scopus)

Abstract

The ejection of hydrated electrons from 266-nm laser-photoexcited solutions containing Cu(NH3)+3, CuCl3/2-, or CuBr3/2- Occurs through two pathways on the nanosecond time scale: a prompt ejection (τ < laser pulsewidth), and a delayed ejection (τ > laser pulsewidth) which follows a first-order rate law. This behavior is consistent with electron ejection from two excited states: the primary CTTS state, and longer-lived triplet species consisting of an exciplex and its precursor. The quantum yields for both prompt and delayed ejection are quite high, in the 0.15-0.4 range.

Original languageEnglish
Pages (from-to)489-496
Number of pages8
JournalRadiation Physics and Chemistry
Volume55
Issue number5-6
DOIs
Publication statusPublished - Aug 1 1999
EventProceedings of the 1998 9th Tihany Symposium on Radiation Chemistry - Tata, Hung
Duration: Aug 29 1998Sep 3 1998

ASJC Scopus subject areas

  • Radiation

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