Effective receptors for fluoride and acetate ions: synthesis and binding study of pyrrole- and cystine-based cyclopeptido-mimetics |
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| Authors: | Yanhua Zhang Jiaqi He |
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| Institution: | a Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
b College of Chemistry and Life Science, Tianjin Normal University, Tianjin 300074, China |
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| Abstract: | Two conformationally constrained pseudo-cyclopeptides (1, 2) consisting of pyrrole-, pyridine-, and cystine-moieties were designed and synthesized as neutral receptors for anionic guests. The anion recognition abilities of these two receptors were examined photometrically in acetonitrile solution. The UV-vis study revealed that the 1+1] receptor (1) formed 1:1 complexes with anions, whereas the 2+2] receptor (2) led to 1:2 mode binding with anions. Both receptors displayed good affinity and selectivity for fluoride and acetate ions. |
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| Keywords: | Pseudo-cyclopeptides Anion receptors Molecular recognition |
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