A Urea-Incorporated Receptor for Aromatic Carboxylate Anion Recognition
β Scribed by Ailong Fan; Hon Kah Hong; Suresh Valiyaveettil; Jagadese J Vittal
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 305 KB
- Volume
- 2
- Category
- Article
- ISSN
- 1472-7862
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π SIMILAR VOLUMES
A new dinaphthyridine receptor 1 is designed that efficiently binds to urea probably by six hydrogen bonds forming a chloroform soluble I: I complex and selectively extract~ urea into chloroform from its mixture with thiourea. The receptor I has fifteen fold higher binding constant for urea than the
Two new neutral receptors (1 and 2) containing (thio)urea and amide groups were synthesized by simple steps in g o d yields. The binding properties for anions of 1 and 2 were characterized by W-vis and fluorescence spectra. Receptor 1 had 811 excellent selectivity for A&-in comparison with other ani