Premium
Radical Polymerization of Vinyl Monomers in Porous Organic Cages
Author(s) -
Uemura Takashi,
Nakanishi Ryo,
Mochizuki Shuto,
Kitagawa Susumu,
Mizuno Motohiro
Publication year - 2016
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201601587
Subject(s) - polymerization , monomer , chain growth polymerization , polymer chemistry , acrylonitrile , chemistry , radical polymerization , living free radical polymerization , materials science , precipitation polymerization , polymer , chemical engineering , photochemistry , organic chemistry , copolymer , engineering
The radical polymerization of vinyl monomers was performed in a tetrahedral imine‐linked organic cage with extrinsic porosity (CC3). Because of its dynamic and responsive packing structure, CC3 endowed the polymerization with specific behaviors. The adsorption of styrene triggered a change in the CC3 assembly, resulting in a monomer arrangement that was suitable for polymerization within the host matrix. The polymerization reaction was strongly dependent on the crystallinity of CC3 and was promoted by amorphization of the host in a cooperative manner, which is not possible with conventional rigid porous materials. Furthermore, CC3 can recognize the polarity of substrates, and thus polar monomers, such as methyl methacrylate and acrylonitrile, could not induce the structural changes in CC3 that are required for polymerization. This monomer specificity governed by the flexibility of CC3 is useful to the prevent incorporation of unfavorable monomers into the polymeric products.