{"title":"Photoluminiscence response of Ru(II) complex immobilized in SiO2-based matrix to dissolved oxygen in beer","authors":"S. Anastasova, M. Milanova, D. Todorovsky","doi":"10.1016/j.jbbm.2007.09.008","DOIUrl":null,"url":null,"abstract":"<div><p>The possibility to use the photoluminescence of Ru(II) tris(4,7-diphenyl-1,10-phenathroline) dichloride, immobilized in sol–gel produced SiO<sub>2</sub>-based matrix for the determination of dissolved oxygen concentration in beer is studied. Organically-modified silane (octyltriethoxysilane) and mixtures from tetraethoxysilane and octyltriethoxysilane are used as precursors for matrix production. Spin- and dip-coating techniques are applied for films deposition. The predeposition ultrasound treatment of the sol ensures a good sensitivity and a linear sensor quenching response to oxygen in 1<!--> <!-->÷<!--> <!-->6 ppm O<sub>2</sub>-concentration interval. The CO<sub>2</sub> present practically has no effect on the films performance. Their photoluminescence show rather good stability on prolonged storage in beer.</p></div>","PeriodicalId":15257,"journal":{"name":"Journal of biochemical and biophysical methods","volume":"70 6","pages":"Pages 1292-1296"},"PeriodicalIF":0.0000,"publicationDate":"2008-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.jbbm.2007.09.008","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of biochemical and biophysical methods","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0165022X07001649","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
The possibility to use the photoluminescence of Ru(II) tris(4,7-diphenyl-1,10-phenathroline) dichloride, immobilized in sol–gel produced SiO2-based matrix for the determination of dissolved oxygen concentration in beer is studied. Organically-modified silane (octyltriethoxysilane) and mixtures from tetraethoxysilane and octyltriethoxysilane are used as precursors for matrix production. Spin- and dip-coating techniques are applied for films deposition. The predeposition ultrasound treatment of the sol ensures a good sensitivity and a linear sensor quenching response to oxygen in 1 ÷ 6 ppm O2-concentration interval. The CO2 present practically has no effect on the films performance. Their photoluminescence show rather good stability on prolonged storage in beer.
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