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Synthesis of a Novel Fluorescent Sensor Bearing Dansyl Fluorophores for the Highly Selective Detection of Mercury (II) Ions
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 pronou...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Molecular Diversity Preservation International
2010
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6257345/ https://www.ncbi.nlm.nih.gov/pubmed/20336014 http://dx.doi.org/10.3390/molecules15031798 |
Sumario: | 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 Hg(2+)-selective ON-OFF type fluorescence switching upon binding. The new compound provided highly selective sensing to Hg(2+) 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 reagent and Hg(2+) to form a helical wrapping structure with the favorable electrostatic interactions of Hg(2+)coordinated with sulfur, oxygen, nitrogen atoms and aromatic moieties. |
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