Synthesis and Gas Permeation Properties of Spirobischromane-Based Polymers of Intrinsic Microporosity

Fritsch, Detlev, Bengtson, Gisela, Carta, Mariolino ORCID: https://orcid.org/0000-0003-0718-6971 and McKeown, Neil B. 2011. Synthesis and Gas Permeation Properties of Spirobischromane-Based Polymers of Intrinsic Microporosity. Macromolecular Chemistry and Physics 212 (11) , pp. 1137-1146. 10.1002/macp.201100089

Full text not available from this repository.

Abstract

Polymers of intrinsic microporosity (PIMs) possess molecular structures composed of fused rings with linear units linked together by a site of contortion so that the macromolecular structure is both rigid and highly non-linear. For PIM-1, which has previously demonstrated encouraging gas permeability data, the site of contortion is provided by the monomer 5,5′,6,6′-tetrahydroxy-3,3,3′,3′-tetramethyl-1,1′-spirobisindane. Here we describe the synthesis and properties of a PIM derived from the structurally related 6,6′,7,7′-tetrahydroxy-4,4,4′,4′-tetramethyl-2,2′-spirobischromane and copolymers prepared from combination of this monomer with other PIM-forming biscatechol monomers, including the highly rigid monomer 9,10-dimethyl-9,10-ethano-9,10-dihydro-2,3,6,7-tetrahydroxyanthracene. Generally, the polymers display good solubility in organic solvents and have high average molecular masses () in the range 80 000–200 000 g · mol−1 and, therefore, are able to form robust, solvent-cast films. Gas permeability and selectivity for He, H2, N2, O2, CO2, and CH4 were measured for the polymers and compared to the values previously obtained for PIM-1. The spirobischromane-based polymers demonstrate enhanced selectivity for a number of gas pairs but with significantly lower values for permeability. The solubility coefficient for CO2 of two of the copolymers exceed even that of PIM-1, which previously demonstrated the highest value for a membrane-forming polymer. Therefore, these polymers might be useful for gas or vapor separations relying on solubility selectivity.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry
Subjects:	Q Science > QD Chemistry
Uncontrolled Keywords:	gas permeability; intrinsic microporosity; monomer; PIM; polycondensation; polymer membranes
Publisher:	Wiley-Blackwell
ISSN:	1022-1352
Last Modified:	18 Oct 2022 13:27
URI:	https://orca.cardiff.ac.uk/id/eprint/13930

Citation Data

Cited 95 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item