A highly selective fluorescent chemosensor for lead ions.
A simple fluorescent chemosensor 1 exhibits a 40-fold fluorescence enhancement upon addition of lead ion and yet is insensitive to most of univalent and divalent metal ions. The high affinity of 1 toward Pb2+ presumably results from the cooperative binding behaviors of two potential metal binding sites: the dicarbonyl and the 15-monoazacrown-5 ether.
Chen
Chao-Tsen
CT
Department of Chemistry, National Taiwan University, Taipei, Taiwan 106, ROC. ctchen@mail.ch.ntu.edu.tw
Huang
Wan-Pei
WP
D002413:Cations, Divalent / Q000737:chemistry; D003374:Coumarins / Q000138:chemical synthesis / Q000737:chemistry*; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D007854:Lead / Q000032:analysis / Q000737:chemistry*; D013050:Spectrometry, Fluorescence / Q000379:methods; D013379:Substrate Specificity
D002413:Cations, Divalent; D003374:Coumarins; D005456:Fluorescent Dyes; D007854:Lead