Abstract
A chemosensor, 2,2′-(1,4-phenylenedivinylene)bis-8-acetoxyquinoline (1), its fluorescent sensing behavior toward representative alkali ions (Na+, K+), alkaline earth ions (Mg2+, Ca2+), and transition-metal ions (Ni2+, Cu2+, Zn2+, Hg2+, Pb2+, Cd2+) was intensively investigated. The compound (1) exhibited pronounced Hg2+ selective on–off-type fluoroionophoric properties among the representative ions in DMF/ethanol (1:9, v/v) solution. Moreover, the highly Hg2+-selective fluorescence quenching property in conjunction with a visible colorimetric change from colorless to light yellow can be observed, leading to potential fabrication of both “naked-eye” and fluorescent detection of Hg2+.
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The authors acknowledge the financial support from the NSFC (grant No. 20931003 and 91122007) and the Specialized Research Fund for the Doctoral Program of Higher Education (grant No. 20110211130002).
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Yu, Y., Dou, W., Hu, X. et al. Both “Naked-Eye” and Fluorescent Sensor for Hg2+ Based upon 8-Hydroxyquinoline. J Fluoresc 22, 1547–1553 (2012). https://doi.org/10.1007/s10895-012-1093-6
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DOI: https://doi.org/10.1007/s10895-012-1093-6