A rhodamine-based Hg2+ sensor with high selectivity and sensitivity in aqueous solution: a NS2-containing receptor.
A rhodamine-based sensor 1 was designed and synthesized by incorporation the rhodamine fluorophore and ionophore NS(2) with high affinity to Hg(2+). Sensor 1 exhibits a high selectivity and an excellent sensitivity and is a dual-responsive colorimetric and fluorescent Hg(2+)-specific sensor in aqueous buffer solution. In addition, the 1:1 binding mode was proposed based on the (1)H NMR and ES(+)MS studies.
Huang
Junhai
J
State Key Laboratory of Bioreactor Engineering, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
Xu
Yufang
Y
Qian
Xuhong
X
D005456:Fluorescent Dyes / Q000737:chemistry*; D008628:Mercury / Q000032:analysis*; D012235:Rhodamines / Q000737:chemistry*; D012996:Solutions; D013050:Spectrometry, Fluorescence; D013438:Sulfhydryl Compounds / Q000737:chemistry*; D014867:Water / Q000737:chemistry
D005456:Fluorescent Dyes; D012235:Rhodamines; D012996:Solutions; D013438:Sulfhydryl Compounds; D014867:Water; D008628:Mercury; C029773:rhodamine B