Thin-film oxygen sensors using a luminescent polynuclear gold(I) complex

A. Mills, C. Tommons, R.T. Bailey, P. Crilly, M.C. Telford

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Robust thin-film oxygen sensors were fabricated by encapsulating a lipophilic, polynuclear gold(I) complex, bis{m-(bis(diphenylphosphino)octadecylamine-P,P')}dichlorodigold(I), in oxygen permeable polystyrene and ormosil matrices. Strong phosphorescence, which was quenched by gaseous and dissolved oxygen, was observed from both matrices. The polystyrene encapsulated dye exhibited downward-turning Stern-Volmer plots which were well fitted by a two-site model. The ormosil trapped complex showed linear Stern-Volmer plots for dissolved oxygen quenching but was downward turning for gaseous oxygen. No leaching was observed when the ormosil based sensors were immersed in flowing water over an 8 h period. Both films exhibited fully reversible response and recovery to changing oxygen concentration with rapid response times. (C) 2011 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)269-273, Impact Factor: 4.5
Number of pages5
JournalAnalytica Chimica Acta
Volume702
DOIs
Publication statusPublished - 2011

ASJC Scopus subject areas

  • Biochemistry
  • Analytical Chemistry
  • Spectroscopy
  • Environmental Chemistry

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