| Literature DB >> 28723193 |
Li Xiong1, Jun Ma1, Yan Huang1, Zihe Wang1, Zhiyun Lu1.
Abstract
A squaraine-based far-red/near-infrared fluorescent probe (SQ-DNBS) was exploited for thiophenol detection. SQ-DNBS is a colorimetric and "off-on" fluorometric dual-channel "naked-eye" chemosensor showing high selectivity, high sensitivity (detection limit: 9.9 nM), and rapid response to thiophenol in aqueous solution. SQ-DNBS also can be used in practical applications for the detection of thiophenol in water samples. Photophysical and spectral characterization results revealed that the probing mechanism of SQ-DNBS toward thiophenol lies in the thiolate-mediated cleavage reaction. Our discovery demonstrates the potential of the arylmethylene-squaraine skeleton as a promising fluorophore unit to construct high-performance far-red/near-infrared chemosensors.Entities:
Keywords: colorimetric; fluorometric; high sensitivity; squaraine; thiophenol; water-soluble
Year: 2017 PMID： 28723193 DOI： 10.1021/acssensors.7b00151
Source DB: PubMed Journal: ACS Sens ISSN： 2379-3694 Impact factor: 7.711