Issue 37, 2014

Pillar[5]- and pillar[6]arene-based supramolecular assemblies built by using their cavity-size-dependent host–guest interactions

Abstract

Pillar[n]arenes, which we first synthesized and named in 2008, are new pillar-shaped macrocyclic hosts. Pillar[n]arene homologues with n = 5–10 have already been synthesized, but the cyclic pentamers, i.e., pillar[5]arenes, and cyclic hexamers, i.e., pillar[6]arenes, have been most widely used because these can be obtained in good yields. To date, nearly all pillar[n]arene-based supramolecular assemblies have been constructed using pillar[5]- and pillar[6]arene scaffolds. In this feature article, we describe supramolecular assemblies built using host–guest interactions depending on the cavity sizes of pillar[5]- and pillar[6]arenes. We first discuss the effects of the type of substituents on the rims of pillar[5]- and pillar[6]arenes on their solubilities, functionalities and host–guest properties. We then discuss supramolecular assemblies based on their host–guest properties and pillar-shaped architectures.

Graphical abstract: Pillar[5]- and pillar[6]arene-based supramolecular assemblies built by using their cavity-size-dependent host–guest interactions

Article information

Article type
Feature Article
Submitted
27 Jan 2014
Accepted
17 Feb 2014
First published
27 Feb 2014

Chem. Commun., 2014,50, 4776-4787

Author version available

Pillar[5]- and pillar[6]arene-based supramolecular assemblies built by using their cavity-size-dependent host–guest interactions

T. Ogoshi and T. Yamagishi, Chem. Commun., 2014, 50, 4776 DOI: 10.1039/C4CC00738G

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