Abstract
Potential use of a surfactant-like receptor is demonstrated at the 1,2-dichloroethane-water interface for strong and selective binding of H 2PO4- over Br- and Cl-. The analysis by interfacial tensiometry reveals that the interfacial adsorption of a thiourea-isothiouronium conjugate, BT-C1, is significantly stabilized by the binding of H2PO4- with the adsorption constant of 1.7×105M-1 while the interfacial adsorptivity of this receptor is relatively moderate for Br - (0.81×105M-1) and Cl- (0.63×105M-1). Such complexation-induced interfacial adsorption behaviors of BT-C1 are discussed as a basis for the development of receptor-based chemical sensors for phosphate anions.
Original language | English |
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Pages (from-to) | 4273-4276 |
Number of pages | 4 |
Journal | Tetrahedron Letters |
Volume | 45 |
Issue number | 22 |
DOIs | |
Publication status | Published - 2004 May 24 |
Keywords
- Adsorption
- Anion
- Interface
- Isothiouronium
- Phosphate
- Receptor
- Recognition
- Thiourea
ASJC Scopus subject areas
- Biochemistry
- Drug Discovery
- Organic Chemistry