Highly selective naked-eye anion sensors based on thioureido or amido calix[4]arenes

Journal Article (2016)
Author(s)

Susan Bartz (Friedrich-Alexander-Universität Erlangen-Nürnberg)

DT Schuhle (TU Delft - BT/Biocatalysis)

Joop Peters (TU Delft - BT/Biocatalysis)

Jürgen Schatz (Friedrich-Alexander-Universität Erlangen-Nürnberg)

Research Group
BT/Biocatalysis
DOI related publication
https://doi.org/10.1515/znb-2015-0146
More Info
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Publication Year
2016
Language
English
Research Group
BT/Biocatalysis
Issue number
2
Volume number
71
Pages (from-to)
113-118

Abstract

Calix[4]arene-thiourea and-tetraamide nakedeye receptors do not show any tendency to self-aggregation and are highly sensitive towards small monoanions; association constants in DMSO for halogenides (chloride to iodide) and HSO4-are <200 m-1. Basic anions deprotonate both receptors leading to a high and selective optical readout. Binding constants for carboxylates, fluoride, and dihydrogen phosphate are three orders of magnitude higher (∼105 m-1) in case of the tetrathiourea receptor.

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