4.4 Article

Dual colorimetric sensoring bis(indolyl)calix[4]crown-6

Journal

TETRAHEDRON LETTERS
Volume 48, Issue 14, Pages 2541-2546

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2007.02.026

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Calix-chromophore, bis(indolyl)calix[4]crown-6 (1) in an oxidized form showing selective colorimetric changes for both alkaline earth cations and F- in CH3CN, has been newly synthesized. It is observed that the binding ability of 1 for the Ca2+ binding enhances in the presence of F-. Compound 1 can operate three independent combinational NOR logic gates toward metal cations and anions. (c) 2007 Elsevier Ltd. All rights reserved.

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