Deactivation and luminescence lifetimes of excited uranyl ion and its fluoro complexes

Zsolt Fazekas, Tomoo Yamamura, Hiroshi Tomiyasu

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

The luminescence decay of uranyl fluoride complexes has been studied in broad fluoride concentration range. Biexponential decay were found with a shorter lifetime component varying between 1.7 and 19.1 μs, while a longer component is in the range from 49 to 156 μs. The fluoride saturated solution exhibits single exponential decay with a lifetime of 207 μs. The activation parameters for the decay of [UO2F]+ complex have been determined. The results have been compared to other studies and interpreted in terms of ligand exchange, which is proposed as a new deactivation pathway for excited uranyl fluoro complexes.

Original languageEnglish
Pages (from-to)756-759
Number of pages4
JournalJournal of Alloys and Compounds
Volume271-273
DOIs
Publication statusPublished - 1998 Jun 12

Keywords

  • Deactivation
  • Lifetime
  • Luminescence
  • Uranyl
  • Uranyl fluoro complexes

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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