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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 23, Number 11
BKCSDE 23(11)
November 20, 2002 

 
Title
N-Anthracenylmethyl Calix[4]azacrowns as New Fluorescent Ionophores
Author
Seung H. Yang, Ok J. Shon, Ki M. Park, Shim S. Lee, Ho J. Park, Moon J. Kim, Joung H. Lee, Jong S. Kim
Keywords
Calixarenes, Complexation, Fluorescence, Conformation
Abstract
Two novel calixarene-based fluoroionophores were synthesized. Their conformations were confirmed to 1,3-alternate by X-ray crystal structures. From CHEF by blocking the PET mechanism in fluorescence spectra, we observed In3+ and Pb2+ selectivity over other metal ions. For In3+ion, calix[4]-bis-azacrown-5 showed about 20 times more sensitive than calix[4]-mono-azacrown-5 because the source of the binding selectivity comes from the calixarene framework and azacrown ligand by controlling the fluorescence and PET mechanisms as-sociated with the amine moiety.
Page
1585 - 1589
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