Downloads: 444

Files in This Item:
File Description SizeFormat 
ncomms5813.pdf2.53 MBAdobe PDFView/Open
Title: Controlled thermal oxidative crosslinking of polymers of intrinsic microporosity towards tunable molecular sieve membranes.
Authors: Song, Qilei
Cao, Shuai
Pritchard, Robyn H
Ghalei, Behnam  orcid (unconfirmed)
Al-Muhtaseb, Shaheen A
Terentjev, Eugene M
Cheetham, Anthony K
Sivaniah, Easan  kyouindb  KAKEN_id  orcid (unconfirmed)
Keywords: Chemical sciences
Materials science
Issue Date: 4-Sep-2014
Publisher: Nature Publishing Group
Journal title: Nature communications
Volume: 5
End page: 4813
Thesis number: 4813
Abstract: Organic open frameworks with well-defined micropore (pore dimensions below 2 nm) structure are attractive next-generation materials for gas sorption, storage, catalysis and molecular level separations. Polymers of intrinsic microporosity (PIMs) represent a paradigm shift in conceptualizing molecular sieves from conventional ordered frameworks to disordered frameworks with heterogeneous distributions of microporosity. PIMs contain interconnected regions of micropores with high gas permeability but with a level of heterogeneity that compromises their molecular selectivity. Here we report controllable thermal oxidative crosslinking of PIMs by heat treatment in the presence of trace amounts of oxygen. The resulting covalently crosslinked networks are thermally and chemically stable, mechanically flexible and have remarkable selectivity at permeability that is three orders of magnitude higher than commercial polymeric membranes. This study demonstrates that controlled thermochemical reactions can delicately tune the topological structure of channels and pores within microporous polymers and their molecular sieving properties.
Description: 排ガスを膜でキャッチ -空気洗浄技術、実用化に期待-. 京都大学プレスリリース. 2014-09-10.
Rights: © 2014 Macmillan Publishers Limited.
許諾条件により本文は 2015-03-05に公開.
This is not the published version. Please cite only the published version.
DOI(Published Version): 10.1038/ncomms5813
PubMed ID: 25186051
Related Link:
Appears in Collections:Journal Articles

Show full item record

Export to RefWorks

Export Format: 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.