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Two Rhodamine-based Turn on Chemosensors with High Sensitivity, Selectivity and Naked-eye Detection for Hg2
qizhengjian
Author NameAffiliationE-mail
qizhengjian College of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, PR China qizhengjian@seu.edu.cn 
Abstract:
Two novel rhodamine-based fluorescence enhanced molecular probes (RA1 and RA2) were synthesized, which were both designed as comparative fluoroionophore and chromophore for the optical detection of Hg2 . The recognizing behaviors were investigated both experimentally and computationally. They exhibited high selectivity and sensitivity for Hg2 over other commonly coexistent metal ions in CH3CN/H2O (1:1, v/v) solution. Test shows that hydroxy benzene of rich electron was benefit to the chelate of Hg2 with sensors. The detection limit was measured least to be 0.14 μM. After addition of Hg2 , the color changed from colourless to pink, which was easily detected by the naked eye in both solution and hydrogel sensor.
Key words:  Fluorescent Sensor, Rhodamine, Mercury
FundProject:
Two Rhodamine-based Turn on Chemosensors with High Sensitivity, Selectivity and Naked-eye Detection for Hg2
qizhengjian
摘要:
Two novel rhodamine-based fluorescence enhanced molecular probes (RA1 and RA2) were synthesized, which were both designed as comparative fluoroionophore and chromophore for the optical detection of Hg2 . The recognizing behaviors were investigated both experimentally and computationally. They exhibited high selectivity and sensitivity for Hg2 over other commonly coexistent metal ions in CH3CN/H2O (1:1, v/v) solution. Test shows that hydroxy benzene of rich electron was benefit to the chelate of Hg2 with sensors. The detection limit was measured least to be 0.14 μM. After addition of Hg2 , the color changed from colourless to pink, which was easily detected by the naked eye in both solution and hydrogel sensor.
关键词:  Fluorescent Sensor, Rhodamine, Mercury
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