Influence of terminal substituents on the halide anion binding of foldamer-based receptors
Influence of terminal substituents on the halide anion binding of foldamer-based receptors
复制标题
末端取代基对基于折叠体的受体卤化物阴离子结合的影响
DOI:
10.1016/j.cclet.2017.06.006
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发表时间:
2017-08
影响因子:
9.1
通讯作者:
Jiang Hua
中科院分区:
文献类型:
--
作者:
Yang Ling;Zhao Wei;Che Yan-Ke;Wang Ying;Jiang Hua
Foldamers 1–4 incorporating different terminal substituents have been designed and synthesized for binding halide anions. 1H NMR titration experiments carried out in DMSO-d6/CDCl3 (15/85, v/v) demonstrated that the short oligo(aryltriazole)s backbone 1 could not bind halide anions unless that amide H-bond donors were incorporated at the termini of the oligomer. Terminal substituents on oligo( aryltriazoleamide)s foldamers 2–4 display a considerable influence on the binding affinities of the foldamers for halide anions. Large steric hindrance of the terminal substituents was found to be unfavorable for binding halide anions, but aromatic p-p interactions between two terminal substituents are capable of stabilizing the conformation of foldamers thus giving rise to an enhancement in the binding strengths. However, the terminal substituents were found to hardly affect the binding selectivity in the studied cases
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