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Binding Properties and Supramolecular Polymerization of a Water-Soluble Resorcin[4]arene.


ABSTRACT: Controlling the self-assembly of molecules in water is difficult because the small size, polarity, and hydrogen bond donating and accepting properties of water attenuate most non-covalent interactions. Here we describe how resorcinarene 1, with pyridinium pendent groups, assembles in water to form head-to-tail assemblies. These small supramolecular polymers form because they offer greater stabilization than any latent head-to-head assembly of resorcinarenes to form dimeric (or hexameric) containers. Instead, the resorcinarene bowl - particularly if negatively charged - is a good host for the pyridinium pendent groups of a second resorcinarene. Alternatively, resorcinarene 1 is also a good host for complexing anions and cations of any added salt. In combination therefore, host 1 possesses a rich repertoire of supramolecular properties that is dependent on the ionic strength and the nature of salts, pH, and the concentration of the host. These findings provide new information about controlling the self-assembly of resorcinarenes in water.

SUBMITTER: Jordan JH 

PROVIDER: S-EPMC6879061 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature

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Binding Properties and Supramolecular Polymerization of a Water-Soluble Resorcin[4]arene.

Jordan Jacobs H JH   Wishard Anthony A   Mague Joel T JT   Gibb Bruce C BC  

Organic chemistry frontiers : an international journal of organic chemistry 20190321 8


Controlling the self-assembly of molecules in water is difficult because the small size, polarity, and hydrogen bond donating and accepting properties of water attenuate most non-covalent interactions. Here we describe how resorcinarene <b>1</b>, with pyridinium pendent groups, assembles in water to form head-to-tail assemblies. These small supramolecular polymers form because they offer greater stabilization than any latent head-to-head assembly of resorcinarenes to form dimeric (or hexameric)  ...[more]

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