Molecules 2010, 15(3), 1798-1810; doi:10.3390/molecules15031798
Article

Synthesis of a Novel Fluorescent Sensor Bearing Dansyl Fluorophores for the Highly Selective Detection of Mercury (II) Ions

Received: 1 February 2010; in revised form: 22 February 2010 / Accepted: 8 March 2010 / Published: 12 March 2010
(This article belongs to the Special Issue Macromolecules: Chemistry, Medicinal and Functional Materials)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: A new macromolecule possessing two dansyl moieties and based on 2-[4-(2-aminoethylthio)butylthio]ethanamine was prepared as a fluorescent sensor and its mercury sensing properties toward various transition metal, alkali, and alkali earth ions were investigated. The designed compound exhibited pronounced Hg2+-selective ON-OFF type fluorescence switching upon binding. The new compoundprovided highly selective sensing to Hg2+ in acetonitrile-water solvent mixtures with a detection limit of 2.49 x 10-7 M or 50 ppb. The molecular modeling results indicated that ions-recognition of the sensor originated from a self assembly process of the reagentand Hg2+ to form a helical wrapping structure with the favorable electrostatic interactions of Hg2+coordinated with sulfur, oxygen, nitrogen atoms and aromatic moieties.
Keywords: mercury sensor; fluoroionophore; Hg2+-selectivity; fluorescent sensor
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MDPI and ACS Style

Wanichacheva, N.; Watpathomsub, S.; Lee, V.S.; Grudpan, K. Synthesis of a Novel Fluorescent Sensor Bearing Dansyl Fluorophores for the Highly Selective Detection of Mercury (II) Ions. Molecules 2010, 15, 1798-1810.

AMA Style

Wanichacheva N, Watpathomsub S, Lee VS, Grudpan K. Synthesis of a Novel Fluorescent Sensor Bearing Dansyl Fluorophores for the Highly Selective Detection of Mercury (II) Ions. Molecules. 2010; 15(3):1798-1810.

Chicago/Turabian Style

Wanichacheva, Nantanit; Watpathomsub, Supranee; Lee, Vannajan Sanghiran; Grudpan, Kate. 2010. "Synthesis of a Novel Fluorescent Sensor Bearing Dansyl Fluorophores for the Highly Selective Detection of Mercury (II) Ions." Molecules 15, no. 3: 1798-1810.

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