科研之友
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摘要
We have designed and synthesized a new fluorescent receptor 3 utilizing biquinoline as a molecular scaffold. The receptor 3 has two amide hydrogens and two carbamate hydrogens anchored at 4,4%26apos;-position of biquinoline. Fluorescence and H-1 NMR titration showed that receptor 3 bound anions with different stoichiometry depending on the shape of anions and its association constants for anions reflected the basicities of anions. Receptor 3 bound chloride, acetate and benzoate in 1:2 stoichiometry and had a highest affinity for acetate. Tetrahedral shaped dihydrogen phosphate bound receptor 3 in 1:1 stoichiometry, although its affinity was low.
- 出版日期2013-6
