A bowl-shaped organic host using bispyridine ligands: selective encapsulation of carbonyl guests in water

Kohei Yazaki; Norifumi Kishi; Munetaka Akita; Michito Yoshizawa

doi:10.1039/C3CC38869G

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Chemical Communications

Issue 16, 2013

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A bowl-shaped organic host using bispyridine ligands: selective encapsulation of carbonyl guests in water

Kohei Yazaki,^a Norifumi Kishi,^a Munetaka Akita^a and Michito Yoshizawa*^a

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Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
E-mail: yoshizawa.m.ac@m.titech.ac.jp ;
Fax: +81-45-924-5230 ;
Tel: +81-45-924-5284

Chem. Commun., 2013,49, 1630-1632

DOI: 10.1039/C3CC38869G
Received 11 Dec 2012, Accepted 08 Jan 2013
First published online 22 Jan 2013

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Abstract
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A bowl-shaped organic host was prepared by linking two anthracene-embedded bispyridine ligands with two methylene spacers. The water-soluble host has a hemispherical hydrophobic cavity ( [similar] 1 nm in diameter) with two cationic methylenebispyridinyl (Lewis acidic) moieties and shows the selective recognition and encapsulation of aromatic guest molecules containing carbonyl groups in water.