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A simple “off-on” fluorescent chemosensor with high selectivity to zinc ions based on 1,10-phenanthro-line receptor dipyrido[3,2-d:2’,3’-f]quinoxaline(L) was investigated.The selectivity response of receptor L to zinc ion was demonstrated by UV-Vis absorption and fluorescence spectroscopies in DMF buffer solution.The experiment results show that the fluorescent chemosensor L exhibits the optimum response behavior to Zn2+ in the range of pH 8.0―9.0 and shows excellent selectivity to Zn2+ over other cations tested.
A simple “off-on” fluorescent chemosensor with high selectivity to zinc ions based on 1,10-phenanthro-line receptor dipyrido [3,2-d: 2 ’, 3’-f] quinoxaline (L) was investigated. The selectivity response of receptor L to zinc ion was demonstrated by UV-Vis absorption and fluorescence spectroscopies in DMF buffer solution. The experiment results show that the fluorescent chemosensor L exhibits the optimum response behavior to Zn2 + in the range of pH 8.0-9.0 and shows excellent selectivity to Zn2 + over other cations tested.