Controlled Encapsulation of Photoresponsive Macromolecules in Porous Coordination Polymer | Zendy

Takashi Uemura | Zendy; Gosuke Washino | Zendy; Nobuhiro Yanai | Zendy; Susumu Kitagawa | Zendy

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Controlled Encapsulation of Photoresponsive Macromolecules in Porous Coordination Polymer

Author(s) -

Takashi Uemura,

Gosuke Washino,

Nobuhiro Yanai,

Susumu Kitagawa

Publication year - 2013

Publication title -

chemistry letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.492

H-Index - 114

eISSN - 1348-0715

pISSN - 0366-7022

DOI - 10.1246/cl.2013.222

Subject(s) - chemistry , photoisomerization , azobenzene , peg ratio , ethylene glycol , polymer , isomerization , adsorption , macromolecule , photochemistry , porosity , polymer chemistry , polyethylene glycol , chemical engineering , organic chemistry , catalysis , biochemistry , engineering , finance , economics

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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