pH-Controlled Molecular Switches and the Substrate-Directed Self-Assembly of Molecular Capsules with a Calix[4]pyrrole Derivative

被引：35

作者：

Cafeo, Grazia ^{[1
]}

Kohnke, Franz H. ^{[1
]}

Valenti, Luca ^{[1
]}

White, Andrew J. P. ^{[2
]}

机构：

[1] Univ Messina, Dipartimento Chim Organ & Biol, I-98166 Messina, Italy

[2] Univ London Imperial Coll Sci Technol & Med, Dept Chem, Chem Crystallog Lab, London SW7 2AZ, England

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2008年 / 14卷 / 36期

关键词：

anions; calixpyrroles; capsules; hydrogen bonding; molecular recognition; self-assembly;

D O I：

10.1002/chem.200800819

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

10 alpha.20 alpha-Bis(4-nitrophenyl)-calix[4]pyrrole (1) forms 1:1 complexes with anions of selected aromatic hydroxy acids in which the host orientation within the guest is controlled by a change in the pH value. Some bis-anionic guests, including those obtained from 4-hydroxybenzoic acid. 1,4- and 1,3-benzenedicarboxylic acids, induce the self-assembly of molecular capsules involving two molecules of the receptor. H-1 NMR data and solid-state structures of the 1:1 complex of 1 with p-C6H4(COOH)(COO-)+NMe4 and the 2:1 capsule [(1)(2)m-C6H4(COO-)(2)-(+NMe4)(2)] provide structural details in solution and in the solid state.

引用

页码：11593 / 11600

页数：8

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