Turn-on fluorescent chemosensor based on an amino acid for Pb(II) and Hg(II) ions in aqueous solutions and role of tryptophan for sensing

Lok Nath Neupane; Joo Young Park; Ju Hun Park; Keun Hyeung Lee

doi:10.1021/ol3029516

Turn-on fluorescent chemosensor based on an amino acid for Pb(II) and Hg(II) ions in aqueous solutions and role of tryptophan for sensing

Lok Nath Neupane, Joo Young Park, Ju Hun Park, Keun Hyeung Lee

Inha University

Research output: Contribution to journal › Article › peer-review

195 Scopus citations

Abstract

This communication presents a fluorescent chemosensor for detecting Pb(II) and Hg(II) in aqueous solutions. The sensor showed a turn-on response to Pb(II) by an enhancement of emission intensity at 380 nm and to Hg(II) by an enhancement of emission intensities at 380 and 475 nm. We have first characterized a unique function of tryptophan as a ligand as well as a quencher for recognition and fluorescent change by a metal binding event.

Original language	English
Pages (from-to)	254-257
Number of pages	4
Journal	Organic Letters
Volume	15
Issue number	2
DOIs	https://doi.org/10.1021/ol3029516
State	Published - 18 Jan 2013

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AU - Lee, Keun Hyeung

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AB - This communication presents a fluorescent chemosensor for detecting Pb(II) and Hg(II) in aqueous solutions. The sensor showed a turn-on response to Pb(II) by an enhancement of emission intensity at 380 nm and to Hg(II) by an enhancement of emission intensities at 380 and 475 nm. We have first characterized a unique function of tryptophan as a ligand as well as a quencher for recognition and fluorescent change by a metal binding event.

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Turn-on fluorescent chemosensor based on an amino acid for Pb(II) and Hg(II) ions in aqueous solutions and role of tryptophan for sensing

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