Journal
TETRAHEDRON
Volume 65, Issue 14, Pages 2818-2823Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2009.01.079
Keywords
Calixarenes; Fluorescence; Detection; Complexation; Excimer; Magnesium
Categories
Funding
- Korea Science and Engineering Foundation (KOSEF) [R11-2005-008-00000-0]
- l'Agence Universitaire de la Francophonie
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A new fluorogenic calix[4]tetraaza-crown-6 (4) bearing two pyrene amide groups has been prepared. It was shown to be selective for Mg2+. When Mg2+ is bound to 4, the pyrene monomer emission increased while the excimer emission declined in a ratiometric manner. It is shown by H-1 NMR that this ratiometric change is due to the conformational changes of the pyrenes during the chelation of Mg2+ by the amide functions to form a 1:1 complex. (C) 2009 Elsevier Ltd. All rights reserved.
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