A water-soluble ribosyl-based fluorescent sensor for Hg2+ and Cu2+ ions.
A water-soluble ribosyl-based fluorescent sensor 5 was prepared. The sensor contains an anthracene as the fluorophore and a set of complex groups as recognition sites, which bears two triazole ring spacers linked to two ribosyl carboxylic acids groups. The association constants of 5 in water are 2.15x10(5)M(-1) and 9.57x10(4)M(-1) for Cu(2+) and Hg(2+) ions, respectively, and both metals formed complexes with 5 at a 1:1 metal to ligand ratio. The binding of 5 to Cu(2+) shows a broad pH range (5-10) and a low detection limit (57ppb) in water, thus indicating it an efficient and promising cation probe.
Chen
Yi-Bin
YB
Department of Chemistry, National Changhua University of Education, Changhua 50058, Taiwan.
Wang
Yan-Jhang
YJ
Lin
Yi-Jen
YJ
Hu
Ching-Han
CH
Chen
Shau-Jiun
SJ
Chir
Jiun-Ly
JL
Wu
An-Tai
AT
D003300:Copper / Q000032:analysis* / Q000737:chemistry; D005456:Fluorescent Dyes / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008628:Mercury / Q000032:analysis* / Q000737:chemistry; D012266:Ribose / Q000737:chemistry*; D012995:Solubility; D013050:Spectrometry, Fluorescence; D014867:Water / Q000737:chemistry*
D005456:Fluorescent Dyes; D014867:Water; D012266:Ribose; D003300:Copper; D008628:Mercury