A highly selective and sensitive fluorescent chemosensor for Hg2+ in neutral buffer aqueous solution.
A selective and sensitive fluorescent chemosensor for Hg2+, which was composed of two aminonaphthalimide fluorophores and a receptor of 2,6-bis(aminomethyl)pyridine, was synthesized through the reaction of 2,6-bis(chloromethyl)pyridine and N-[2-(2-hydroxyethoxy)ethyl]-4-piperazino-1,8-naphthalimide. The chemosensor showed an about 17-fold increase in fluorescence quantum yield upon addition of 1 equiv of Hg2+ in neutral buffer aqueous solution, and the other common metal ions did not notably disturb the detection of Hg2+.
State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China.
Xiangfeng
X
Guo
Xuhong
X
Qian
Lihua
L
Jia
D002021:Buffers; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008628:Mercury / Q000032:analysis* / Q000737:chemistry; D011725:Pyridines / Q000138:chemical synthesis / Q000737:chemistry*; D015363:Quinolones / Q000138:chemical synthesis / Q000737:chemistry*; D012680:Sensitivity and Specificity; D012996:Solutions; D013050:Spectrometry, Fluorescence / Q000379:methods*; D014867:Water / Q000737:chemistry
D002021:Buffers; D005456:Fluorescent Dyes; D011725:Pyridines; D015363:Quinolones; D012996:Solutions; D014867:Water; D008628:Mercury