title: [Effect of oxygen on the fluorescence of sol-gel with ruthenium complexes].
abstract: Different Ru complexes were used in an organically modified sol-gel (ormosil) sensing film to character their quenching behaviors to oxygen. The sensing film with tris-(4,7-diphenyl-1, 10-phenanthroline) ruthenium(II) [Ru(dpp)(2+)3] as an indicator was selected because of its characteristics with high quenching efficiency, fast response time, high luminescence intensity and long-term stability. The quenching behavior of the sensing film greatly depended on the content of dimethyldimethoxysilane (DiMe-DMOS) in ormosil because DiMe-DMOS changed the polarity of sensing film. A home-made fluorescence quenching system was set up for oxygen determination based on a blue LED (lambda max = 460 nm ) as an exciting light source. Th e response time was 30 s from saturatednitrogen to oxygen in water, and 90 s from saturated oxygen to nitrogen.
authors.affiliation: The Key Laboratory of Analytical Sciences of MOE and Department of Chemistry, Xiamen University, Xiamen 361005, China.
authors.forename: Ya-qi
authors.initials: YQ
authors.lastname: Jiang
authors.forename: Zhen-Ming
authors.initials: ZM
authors.lastname: Zhong
authors.forename: Xi
authors.initials: X
authors.lastname: Chen
authors.forename: Xiao-u
authors.initials: XU
authors.lastname: Wang
authors.forename: Kwokyin
authors.initials: K
authors.lastname: Wong
mesh_terms: D002364:Caseins / Q000494:pharmacology; D045744:Cell Line, Tumor / Q000737:chemistry / Q000187:drug effects; D005782:Gels / Q000737:chemistry* / Q000378:metabolism; D006801:Humans; D010100:Oxygen / Q000494:pharmacology*; D012428:Ruthenium / Q000737:chemistry* / Q000378:metabolism; D044967:Serum / Q000737:chemistry* / Q000187:drug effects; D013050:Spectrometry, Fluorescence / Q000379:methods*
chemical_list: D002364:Caseins; D005782:Gels; D012428:Ruthenium; D010100:Oxygen