An anion sensor based on the displacement of 2,6-dichlorophenol-indo-o-cresol sodium salt from a water-soluble tetrasulfonated calix[4]arene

作者：Kim Sung Hoon^*; Hwang In Jung; Gwon Seon Yeong; Burkinshaw S M; Son Young A

来源：Dyes and Pigments, 2011, 88(1): 84-87.

DOI：10.1016/j.dyepig.2010.05.004

• Chemosensor
• Anion sensor
• Water-soluble calix[4]arene
• 2,6-Dichlorophenol-indo-o-cresol sodium
• salt
• Fluoride ion (F(-))
• Displacement assay

A colorimetric displacement assay system for F(-) and H(2)PO(4)(-) anions based on a 2,6-dichlorophenol-indo-o-cresol sodium salt:calix[4]arene-p-sulfonate complex was studied in 1.1 DMSO water solution. When calixHarene-p-sulfonate formed the complex with the blue 2,6-dichlorophenol-indo-o-cresol sodium salt dye, the absorption peak of the dye at 625 nm disappeared and the DMSO.water solution of the complex was colourless. However, the initial blue colour of the dye returned with the addition of both F- and H(2)PO(4)(-) anions which bound to the calixPljarene-p-sulfonate and, in doing so, displaced the 2,6-dichlorophenol-indo-o-cresol sodium salt from the 2,6-dichlorophenol-indo-o-cresol.calix[4]arene-p-sulfonate complex Th

• 出版日期2011-1