Highly selective, sensitive and quantitative detection of Hg2+ in aqueous medium under broad pH range

Ranganathan Koteeswari; Pichandi Ashokkumar; E. J. Padma Malar; Vayalakkavoor T. Ramakrishnan; Perumal Ramamurthy

doi:10.1039/C1CC12018B

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Highly selective, sensitive and quantitative detection of Hg²⁺ in aqueous medium under broad pH range†

Ranganathan Koteeswari,^a Pichandi Ashokkumar,^a E. J. Padma Malar,‡*^a Vayalakkavoor T. Ramakrishnan*^a and Perumal Ramamurthy*^a

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* Corresponding authors

^a National Centre for Ultrafast Processes, University of Madras, Taramani Campus, Chennai-600 113, India
E-mail: ejpmalar@yahoo.com, vtrk28@yahoo.com, prm60@hotmail.com
Fax: 091-44-24546709
Tel: 091-44-24547190

Abstract

Amidothiourea linked acridinedione derivatives selectively detect Hg²⁺ in unbuffered aqueous solution under broad pH range with both single- and two-photon excitation. The observed linear fluorescence intensity change allows the quantitative detection of Hg²⁺ in the concentration range of 22 nM–0.33 μM with the lower detection limit of 2 nM.

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Article information

DOI: https://doi.org/10.1039/C1CC12018B
Article type: Communication
Submitted: 09 Apr 2011
Accepted: 19 May 2011
First published: 09 Jun 2011

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Chem. Commun., 2011,47, 7695-7697

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Highly selective, sensitive and quantitative detection of Hg²⁺ in aqueous medium under broad pH range

R. Koteeswari, P. Ashokkumar, E. J. P. Malar, V. T. Ramakrishnan and P. Ramamurthy, Chem. Commun., 2011, 47, 7695 DOI: 10.1039/C1CC12018B

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