title: A novel luminescent lifetime-based optrode for the detection of gaseous and dissolved oxygen utilising a mixed ormosil matrix containing ruthenium (4,7-diphenyl-1,10-phenanthroline)3Cl2 (Ru.dpp).
abstract: A novel luminescent lifetime optrode is presented for the detection of gaseous and dissolved oxygen. The optrode utilises ruthenium (4,7-diphenyl-1,10-phenanthroline)(3)Cl(2) as the sensing fluorophore immobilised in a hydrophobic ormosil matrix. The ormosil matrix is synthesised at room temperature from octyltriethoxysilane and methyltriethoxysilane precursors. Investigations of different ormosils were conducted and the most effective one was selected for optrode production. Optrodes were tested for responses to gaseous and dissolved oxygen. Their responses were modelled using traditional two-site or two-exponential methods and feed-forward artificial neural networks. Comparison of the two modelling methodologies is presented and further improvements in modelling and ormosil design are suggested.
authors.affiliation: School of Chemical Engineering and Analytical Science, University of Manchester, Manchester M60 1QD, UK.
authors.forename: P
authors.initials: P
authors.lastname: Roche
authors.forename: R
authors.initials: R
authors.lastname: Al-Jowder
authors.forename: R
authors.initials: R
authors.lastname: Narayanaswamy
authors.forename: J
authors.initials: J
authors.lastname: Young
authors.forename: P
authors.initials: P
authors.lastname: Scully
mesh_terms: D002712:Chlorides / Q000737:chemistry*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation* / Q000379:methods; D049449:Luminescence; D008567:Membranes, Artificial; D009942:Organometallic Compounds / Q000737:chemistry*; D010100:Oxygen / Q000032:analysis*; D010618:Phenanthrolines / Q000737:chemistry*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012833:Siloxanes / Q000138:chemical synthesis / Q000737:chemistry*; D013499:Surface Properties; D013997:Time Factors
chemical_list: D002712:Chlorides; D008567:Membranes, Artificial; D009942:Organometallic Compounds; D010618:Phenanthrolines; D012833:Siloxanes; C510784:ormosil; C041132:tris(4,7-diphenyl-1,10-phenanthroline)ruthenium (II); D010100:Oxygen