A new fluorogenic mono-ionizable calix[4]arene dansylcarboxamide as a selective chemosensor of soft metal ions, Tl+ and Hg2+
作者:Vladimir S. Talanov、Ebony D. Roper、Nicole M. Buie、Galina G. Talanova
DOI:10.1016/j.tetlet.2007.09.043
日期:2007.11
A new fluorogenic calix[4] arene containing one pendent N-dansylcarboxamide group has been synthesized. The ligand demonstrates selective optical recognition of Tl+ and Hg2+ in solvent extraction from aqueous solutions with high content of Na+. Complexation of Tl+ and Hg2+ produces contrasting changes in the fluorescence spectrum of this sensor. Partial cone is the dominant calixarene conformation in the complex with Tl+. (C) 2007 Elsevier Ltd. All rights reserved.