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

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

Research output: Contribution to journalArticle

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. © 2011 Elsevier B.V.
Original languageEnglish
Pages (from-to)269-273
Number of pages5
JournalAnalytica Chimica Acta
Volume702
Issue number2
DOIs
Publication statusPublished - 30 Sep 2011

Fingerprint

Oxygen sensors
Gold
gold
Polystyrenes
Dissolved oxygen
Oxygen
sensor
Thin films
oxygen
dissolved oxygen
Phosphorescence
Leaching
matrix
Quenching
Coloring Agents
Recovery
dye
Water
leaching
Sensors

Keywords

  • Gold complex
  • Ormosil
  • Oxygen sensor
  • Phosphorescence
  • Polystyrene

Cite this

Mills, A. ; Tommons, C. ; Bailey, R. T. ; Crilly, P. ; Tedford, M. C. / Thin-film oxygen sensors using a luminescent polynuclear gold(I) complex. In: Analytica Chimica Acta. 2011 ; Vol. 702, No. 2. pp. 269-273.
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Thin-film oxygen sensors using a luminescent polynuclear gold(I) complex. / Mills, A.; Tommons, C.; Bailey, R. T.; Crilly, P.; Tedford, M. C.

In: Analytica Chimica Acta, Vol. 702, No. 2, 30.09.2011, p. 269-273.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Thin-film oxygen sensors using a luminescent polynuclear gold(I) complex

AU - Mills, A.

AU - Tommons, C.

AU - Bailey, R. T.

AU - Crilly, P.

AU - Tedford, M. C.

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AB - 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. © 2011 Elsevier B.V.

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KW - Ormosil

KW - Oxygen sensor

KW - Phosphorescence

KW - Polystyrene

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