通过卟啉主体的配位诱导组装增强对阴离子客体的选择性识别。
Enhanced shape-selective recognition of anion guests through complexation-induced organization of porphyrin hosts.
机构信息
Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, New Mexico 88003, United States.
出版信息
Org Lett. 2012 Mar 16;14(6):1370-3. doi: 10.1021/ol203249x. Epub 2012 Feb 24.
Abstract
We present a fortuitous discovery of enhanced shape-selective recognition of anion guests that stems from a complexation-induced conformational change in porphyrin hosts upon anion binding. Porphyrin hosts reported here exist in a conformation that is not favorable to guest binding. Anions that bind strongly are those that can induce a conformational change in the host to allow guest binding. Furthermore, guests that mimic the shape of the newly formed pocket bind the strongest.
摘要
我们偶然发现，卟啉主体在阴离子结合后发生的构象变化引起了对阴离子客体的增强的形状选择性识别。这里报道的卟啉主体存在一种不利于客体结合的构象。那些能够诱导主体发生构象变化以允许客体结合的阴离子会与主体强烈结合。此外，模拟新形成的口袋形状的客体结合得最强。
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