Optical Determination of Thallium(I) and Cesium(I) with a Fluorogenic Calix[4]arenebis(crown-6 ether) Containing One Pendent Dansyl Group

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• 作者：Ebony D. Roper ; Vladimir S. Talanov ; Maryna G. Gorbunova ; Richard A. Bartsch ; Galina G. Talanova
• 刊名：Analytical Chemistry
• 出版年：2007
• 出版时间：March 1, 2007
• 年：2007
• 卷：79
• 期：5
• 页码：1983 - 1989
• 全文大小：325K
• 年卷期：v.79,no.5(March 1, 2007)
• ISSN：1520-6882

文摘

A fluorogenic derivative of 1,3-alternate calix[4]arenebis(crown-6) (1) containing a dansyl group in the proton-ionizable side arm has been employed in selective sensingof Tl⁺ and Cs⁺ at low concentration levels in MeCN-H₂O(1:1) mixed solvent. Optical recognition of these two metalcations by 1 occurs in contrasting modes. On the basisof the results of fluorescence, matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS), and ¹H NMR studies, Tl⁺ and Cs⁺ react with1 via formation of 1:1 complexes that differ in coordination arrangement around the metal ion.