Molecular Recognition Under Interfacial Conditions: Calix[4]pyrrole-Based Cross-linkable Micelles for Ion Pair Extraction,Journal of the American Chemical Society

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Molecular Recognition Under Interfacial Conditions: Calix[4]pyrrole-Based Cross-linkable Micelles for Ion Pair Extraction
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2017-06-28 00:00:00 , DOI: 10.1021/jacs.7b04529
Xiaodong Chi ₁ , Gretchen Marie Peters ₁ , Forrest Hammel ₁ , Chandler Brockman ₁ , Jonathan L. Sessler _{1,

2}

Affiliation

An anthracene-functionalized, long-tailed calix[4]pyrrole 1, containing both an anion-recognition site and cation-recognition functionality, has been synthesized and fully characterized. Upon ion pair complexation with FeF₂, receptor 1 self-assembles into multimicelles in aqueous media. This aggregation process is ascribed to a change in polarity from nonpolar to amphiphilic induced upon concurrent anion and cation complexation and permits molecular recognition-based control over chemical morphology under interfacial conditions. Photoirradiation of the micelles serves to cross-link the anthracene units thus stabilizing the aggregates. The combination of ion pair recognition, micelle formation, and cross-linking can be used to extract FeF₂ ion pairs from bulk aqueous solutions. The present work helps illustrate how molecular recognition and self-assembly may be used to control the chemistry of extractants at interfaces.

中文翻译：

界面条件下的分子识别：基于杯[4]吡咯的可交联胶束进行离子对萃取

蒽功能化的长尾杯[4]吡咯1，既包含阴离子识别位点，又包含阳离子识别功能，已被合成并充分表征。离子对与FeF ₂络合后，受体1在水性介质中自组装成胶束。该聚集过程归因于在同时发生的阴离子和阳离子络合下诱导的极性从非极性变为两亲性的变化，并允许在界面条件下基于分子识别的化学形态控制。胶束的光辐射用于使蒽单元交联，从而稳定聚集体。离子对识别，胶束形成和交联的组合可用于提取FeF ₂大量水溶液中的离子对。本工作有助于说明如何使用分子识别和自组装来控制界面处萃取剂的化学作用。

更新日期：2017-06-29

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