Highly selective, sensitive and quantitative detection of Hg2+ in aqueous medium under broad pH range |
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Authors: | Koteeswari Ranganathan Ashokkumar Pichandi Malar E J Padma Ramakrishnan Vayalakkavoor T Ramamurthy Perumal |
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Affiliation: | National Centre for Ultrafast Processes, University of Madras, Taramani Campus, Chennai-600 113, India. |
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Abstract: | Amidothiourea linked acridinedione derivatives selectively detect Hg(2+) 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 Hg(2+) in the concentration range of 22 nM-0.33 μM with the lower detection limit of 2 nM. |
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