A sugar-aza-crown ether-based fluorescent sensor for Hg(2+) and Cu(2+).
A fluorescent sensor, 5, based upon the sugar-aza-crown ether structure with two anthracenetriazolymethyl groups was prepared and its fluoroionophoric properties toward transition metal ions were investigated. In methanol, the sensor exhibits highly selective recognition of Cu(2+) and Hg(2+) ions among a series of tested metal ions. The association constant for 5.Cu(2+) and 5.Hg(2+) in methanol was calculated to be 4.0 x 10(5)M(-1) and 1.1 x 10(5)M(-1), respectively. The detection limits for the sensing of Cu(2+) and Hg(2+) ions were 1.39 x 10(-6)M and 1.39 x 10(-5) M, respectively.
Hsieh
Yu-Chi
YC
Department of Chemistry, National Changhua University of Education, Changhua 50058, Taiwan.
Chir
Jiun-Ly
JL
Wu
Hsiu-Han
HH
Chang
Po-Sheng
PS
Wu
An-Tai
AT
D002241:Carbohydrates / Q000737:chemistry*; D003300:Copper / Q000032:analysis* / Q000737:chemistry; D043844:Crown Ethers / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008628:Mercury / Q000032:analysis* / Q000737:chemistry; D013050:Spectrometry, Fluorescence
D002241:Carbohydrates; D043844:Crown Ethers; D005456:Fluorescent Dyes; D003300:Copper; D008628:Mercury