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Specific Hg(2+)-mediated perylene bisimide aggregation for highly sensitive detection of cysteine
Yi-Bin Ruan1, Ai-Fang Li, Jin-Song Zhao
1Department of Chemistry, College of Chemistry and Chemical Engineering, and the MOE Key Laboratory of Analytical Sciences, Xiamen University, Xiamen 361005, China.
Abstract:
Hg(2+) was found to specifically induce the aggregation of perylene bisimide in a "thymine-Hg(2+)-thymine" binding motif and the resultant aggregates showed a highly selective and sensitive turn-on fluorescence response for cysteine, with a detection limit down to 9.6 nM.
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