Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
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Controlled Encapsulation of Photoresponsive Macromolecules in Porous Coordination Polymer
Takashi UemuraGosuke WashinoNobuhiro YanaiSusumu Kitagawa
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JOURNALS OPEN ACCESS

Volume 42 (2013) Issue 3 Pages 222-223

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Abstract

A photoresponsive controlled adsorption system based on a porous coordination polymer (PCP) was fabricated, using azobenzene tethered with poly(ethylene glycol) (PEG-AB) as macromolecular guests. Specific adsorption behavior of trans-PEG-AB into the nanochannels of a PCP was observed in an EtOH medium. When this composite was irradiated with UV light in EtOH, isomerization of PEG-AB from the trans to the cis form resulted in release of PEG-AB because of the large changes in the molecular shape and solubility of PEG-AB. Subsequent visible light irradiation induced photoisomerization of PEG-AB, which led to readsorption of PEG-AB into the nanochannels.

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© 2013 The Chemical Society of Japan
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