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Turn-on fluorescent chemosensor for Hg²? based on multivalent rhodamine ligands.

ABSTRACT: Rhodamine-based fluorescent chemosensors 1 and 2 exhibit selective fluorescence enhancement to Fe3+ and Hg2+ over other metal ions at 580 nm in CH(3)CN/H(2)O (3/1, v/v) solution. Bis(rhodamine) chemosensor 1, under optimized conditions (CH(3)CN/HEPES buffer (0.02 M, pH = 7.0) (95/5, v/v)), shows a high selectivity and sensitivity to Hg2+, with a linear working range of 0-50 ?M, a wide pH span of 4-10, and a detection limit of 0.4 ?M Hg2+.

SUBMITTER: Wang X 

PROVIDER: S-EPMC3546724 | biostudies-literature | 2012 Dec

REPOSITORIES: biostudies-literature

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Turn-on fluorescent chemosensor for Hg²⁺ based on multivalent rhodamine ligands.

Wang Xuemei X   Iqbal Mudassir M   Huskens Jurriaan J   Verboom Willem W  

International journal of molecular sciences 20121207 12

Rhodamine-based fluorescent chemosensors 1 and 2 exhibit selective fluorescence enhancement to Fe3+ and Hg2+ over other metal ions at 580 nm in CH(3)CN/H(2)O (3/1, v/v) solution. Bis(rhodamine) chemosensor 1, under optimized conditions (CH(3)CN/HEPES buffer (0.02 M, pH = 7.0) (95/5, v/v)), shows a high selectivity and sensitivity to Hg2+, with a linear working range of 0-50 μM, a wide pH span of 4-10, and a detection limit of 0.4 μM Hg2+. ...[more]

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