Fluorescent Sensing Properties of Benzo-18-crown-6 Ethers Containing Thiazoles

Author: Kwon O.-S.   Kim H.-S.  

Publisher: Taylor & Francis Ltd

ISSN: 1061-0278

Source: Supramolecular Chemistry, Vol.19, Iss.4-5, 2007-06, pp. : 277-281

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Abstract

The binding properties of dibenzo-18-crown-6 ether (BTB, 1) and napthobenzo-18-crown-6 ether (NTB, 2), containing two thiazole units toward mono, and divalent cations, are outlined. The ion-selective properties of 1 and 2 were studied by measuring their fluorescent emission responses to alkali, alkaline earth, and transition metal ions. BTB (1) showed the highest binding constant toward Ag+ over Pb2+, Hg2+, and Cu2+. NTB (2) revealed a high selectivity toward Ag+ over Pb2+, Hg2+, and Cu2+.

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