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

Mills, A. and Tommons, C. and Bailey, R. T. and Crilly, P. and Tedford, M. C. (2011) Thin-film oxygen sensors using a luminescent polynuclear gold(I) complex. Analytica Chimica Acta, 702 (2). pp. 269-273. ISSN 0003-2670

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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.

Item type: Article
ID code: 41436
Keywords: polymer, optical sensor, matrix, sol-gel glass, phosphorescence, copolymer film, phase, Ormosil, polystyrene, aqueous environments, oxygen sensor, gold complex, dissolved oxygen, response characteristics, Chemistry, Biochemistry, Spectroscopy, Environmental Chemistry, Analytical Chemistry
Subjects: Science > Chemistry
Department: Faculty of Science > Pure and Applied Chemistry
Related URLs:
Depositing user: Pure Administrator
Date Deposited: 15 Oct 2012 09:59
Last modified: 19 Dec 2014 05:17
URI: http://strathprints.strath.ac.uk/id/eprint/41436

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