Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1237402 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2008 | 4 Pages |
Abstract
A novel ditopic chromogenic receptor, N-5-(8-hydroxy)quinoline-N′-4′-nitro-phenyl thiourea (1), was synthesized. The metal complex 1-Hg2+ showed sensitive and highly selective responses to F− over other anions such as CH3CO2−, H2PO4−, HSO4− and Cl−. 1-Hg2+–F− complex formed, which promoted the intramolecular charge transfer and led to a dramatic spectral change. The color of 1-Hg2+ solution changed from colorless to red upon addition of F−. Thus, a colorimetric assay of F− was developed in acetonitrile by naked-eye detection. F− behaved linearly in the 8.0 × 10−6 to 2.0 × 10−5 mol L−1 concentration range with LOD as 1.4 × 10−6 mol L−1.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Mei-Zhen Sun, Fang-Ying Wu, Yu-Mei Wu, Wen-Ming Liu,