Fluorogenic Hg2+-selective chemodosimeter derived from 8-hydroxyquinoline.
[reaction: see text] A new thioamide derivative of 8-hydroxyquinoline-benzothiazole was prepared, and its fluorogenic chemodosimetric behaviors toward transition-metal ions were investigated. The thioamide derivative showed highly Hg2+-selective fluorescence enhancing properties (167-fold) in 30% aqueous acetonitrile solution. The selective and sensitive signaling behaviors were found to originate from the Hg2+ ion induced transformation of the very weak fluorescent thioamide derivative into a highly fluorescent amide analogue.
Song
Ki Cheol
KC
Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea.
Kim
Jun Soo
JS
Park
Sang Mi
SM
Chung
Kee-Choo
KC
Ahn
Sangdoo
S
Chang
Suk-Kyu
SK