A single molecule multi analyte chemosensor differentiates among Zn²⁺, Pb²⁺ and Hg²⁺: modulation of selectivity by tuning of solvents

Hatai, Joydev; Pal, Suman; Jose, Gregor P.; Sengupta, Tapas; Bandyopadhyay, Subhajit

A single molecule multi analyte chemosensor differentiates among Zn²⁺, Pb²⁺ and Hg²⁺: modulation of selectivity by tuning of solvents

2012

Hatai, Joydev | Pal, Suman | Jose, Gregor P. | Sengupta, Tapas | Bandyopadhyay, Subhajit

A chemosensor detects and differentiates among Hg²⁺, Pb²⁺ and Zn²⁺ with fluorescence enhancement at different wavelengths under different solvent conditions. In methanol, Hg²⁺ and Pb²⁺ displace Zn²⁺ from the [Zn²⁺-sensor] complex displaying ratiometric behaviour. In water, the chemosensor recognises only Hg²⁺ with fluorescence enhancement, and offers intracellular detection of Hg²⁺.

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