New fluorescent sensor for Cu2+ and S2− in 100% aqueous solution based on displacement approachElectronic supplementary information (ESI) available: Details about fluorescence spectra and characterization data including NMR, MS and fluorescence lifetime decay. See DOI: 10.1039/c3dt53281j

An On-Off-On type fluorescent sensor ( HL ) has been developed, which exhibited high selectivity and sensitivity for Cu 2+ over other common ions in 100% aqueous solution. Once HL combined with Cu 2+ , blue fluorescence was almost completely quenched and the L-Cu ensemble was formed. Moreover, the e...

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Hauptverfasser: Fu, Yan, Feng, Qing-Chuan, Jiang, Xiu-Juan, Xu, Hong, Li, Min, Zang, Shuang-Quan
Format: Artikel
Sprache:eng
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Zusammenfassung:An On-Off-On type fluorescent sensor ( HL ) has been developed, which exhibited high selectivity and sensitivity for Cu 2+ over other common ions in 100% aqueous solution. Once HL combined with Cu 2+ , blue fluorescence was almost completely quenched and the L-Cu ensemble was formed. Moreover, the ensemble showed high specificity for S 2− based on the displacement approach, and no interferences were observed in the presence of other anions. Such fluorescence modulation behavior simulates the performance of an IMPLICATION logic gate. In addition, the fluorescent sensor was successfully applied to fluorescent cellular imaging implying potential applications in physiological and environmental systems. A water-soluble sensor ( HL ) for sequential recognition of Cu 2+ and S 2− has been developed. Once HL combined with Cu 2+ , blue fluorescence was almost completely quenched and a L-Cu ensemble formed which showed high specificity for S 2− . HL was successfully applied to cellular imaging.
ISSN:1477-9226
1477-9234
DOI:10.1039/c3dt53281j