title: Highly selective, sensitive and quantitative detection of Hg2+ in aqueous medium under broad pH range.
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.
authors.affiliation: National Centre for Ultrafast Processes, University of Madras, Taramani Campus, Chennai-600 113, India.
authors.forename: Ranganathan
authors.initials: R
authors.lastname: Koteeswari
authors.forename: Pichandi
authors.initials: P
authors.lastname: Ashokkumar
authors.forename: E J Padma
authors.initials: EJ
authors.lastname: Malar
authors.forename: Vayalakkavoor T
authors.initials: VT
authors.lastname: Ramakrishnan
authors.forename: Perumal
authors.initials: P
authors.lastname: Ramamurthy