Chemodosimetric Hg2+-selective signaling by mercuration of dichlorofluorescein derivatives.
The chemodosimetric behavior of dichlorofluorescein derivatives toward Hg(2+) ions was investigated. Simple chemodosimetric systems showed selective and efficient signaling behaviors toward micromolar concentrations of Hg(2+) ions over other common interfering metal ions in an aqueous environment. The signaling mechanism is selective mercuration of the 4',5'-position of the xanthene moiety, which results in efficient chromogenic and fluorogenic signaling of Hg(2+) ions in aqueous environment.
Choi
Myung Gil
MG
Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea.
Ryu
De Hun
DH
Jeon
Hye Lim
HL
Cha
Sunyoung
S
Cho
Janggeun
J
Joo
Hyun Hye
HH
Hong
Kwan Soo
KS
Lee
Chulhyun
C
Ahn
Sangdoo
S
Chang
Suk-Kyu
SK
D002413:Cations, Divalent / Q000737:chemistry; D005452:Fluoresceins / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D008628:Mercury / Q000032:analysis / Q000737:chemistry*; D012680:Sensitivity and Specificity; D012996:Solutions; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D014867:Water / Q000737:chemistry
D002413:Cations, Divalent; D005452:Fluoresceins; D005456:Fluorescent Dyes; D012996:Solutions; D014867:Water; C037631:2',7'-dichlorofluorescein; D008628:Mercury