| Literature DB >> 27518609 |
Saswati Gharami1, Deblina Sarkar1, Samik Acharyya1, Tapan Kumar Mondal2.
Abstract
Herein we report the selective detection of Cu2+ and SO32- by phenanthraquinone thiosemicarbazone (PQTSC) chemosensor. The chemosensor is efficient in detecting Cu2+ over other metal ions, while the PQTSC-Cu2+ complex selectively sense SO32- over other anions. On addition of Cu2+ to the receptor solution, quenching of emission intensity is observed by 16 folds and upon gradual addition of SO32- to this solution, the emission intensity increases and the maxima is regained. The limit of detection for Cu2+ detection calculated from fluorescence titration is 1.06 × 10-8 M and the association constant of PQTSC with Cu2+ is found to be 2.18 × 105.Entities:
Keywords: Chemosensor; Copper sensor; Fluorescent turn-off sensor; Phenanthraquinone thiosemicarbazone (PQTSC)
Year: 2016 PMID： 27518609 DOI： 10.1007/s10895-016-1907-z
Source DB: PubMed Journal: J Fluoresc ISSN： 1053-0509 Impact factor: 2.217