Synthetic ditopic receptors
Synthetic ditopic receptors
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DOI：
10.1023/a:1014468126351
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发表时间：
2001-12-01
影响因子：
2.3
通讯作者：
Sessler, JL
中科院分区：
文献类型：
--
作者：
Kirkovits, GJ;Shriver, JA;Sessler, JL
一个小。但在超分子化学中，一个新兴的热门领域是离子对识别，其中一个宿主同时结合阳离子和阴离子的客体。这些受体的细节。它们结合，例如冠醚和杯芳烃进行阳离子络合，与路易斯酸中心、吡罗、酰胺或尿素基进行阴离子识别，将被讨论。这种方法在某些情况下成功实现的前提是，一个客体离子的结合可以诱导宿主的静电和构象变化，从而增强反离子的络合性。
A small. but emerging field of topical interest in supramolecular chemistry is ion-pair recognition, in which a host simultaneously binds both cationic and anionic guests. Details of these receptors. which combine, for example, crown ethers and calixarenes for cation complexation, with Lewis acid centers, pyrroles, amides or urea groups for anion recognition, will be discussed. The predicate of this approach, successfully achieved in certain instances, is that the binding of one guest ion can induce electrostatic and conformational changes in the host, thereby enhancing the complexation of the counter ion.