title: Highly sensitive and selective fluorescence sensor based on functional SBA-15 for detection of Hg2+ in aqueous media.
abstract: A new Rhodamine-based chemosensor RBSN designed for the selective detection of Hg(2+) in aqueous media is synthesized and structural characterized. It features brightness blue emission in the presence of Hg(2+) with the fluorescent detection limit for Hg(2+) in aqueous media being ppb levels and exhibits excellent Hg(2+)-specific luminescence enhancement over various competitive cations, including alkali and alkaliearth, the first-row transition metals and heavy metals. By immobilizing RBSN to the mesoporous SBA-15, a highly selective and sensitive chemosensor toward mercury cations in aqueous solution was achieved. RBSN/SBA-15 could quantitatively determinate mercury cations at ppb level in the practical environmental media, suggesting the possibility for real-time quantitative detection of Hg(2+) and the convenience for potential application in toxicological and environmental science.
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology, 158 Zhongshan Road, Dalian 116012, China.
authors.forename: Chunxia
authors.initials: C
authors.lastname: Song
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Zhang
authors.forename: Cuiying
authors.initials: C
authors.lastname: Jia
authors.forename: Peng
authors.initials: P
authors.lastname: Zhou
authors.forename: Xie
authors.initials: X
authors.lastname: Quan
authors.forename: Chunying
authors.initials: C
authors.lastname: Duan
mesh_terms: D000327:Adsorption; D003116:Color; D005456:Fluorescent Dyes / Q000737:chemistry*; D008628:Mercury / Q000032:analysis* / Q000737:chemistry; D009584:Nitrogen / Q000737:chemistry; D012235:Rhodamines / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D014867:Water / Q000737:chemistry*
chemical_list: D005456:Fluorescent Dyes; D012235:Rhodamines; C509969:SBA-15; D014867:Water; D012822:Silicon Dioxide; D008628:Mercury; D009584:Nitrogen