2009
DOI: 10.1021/ma900898m
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Polymers of Intrinsic Microporosity Derived from Novel Disulfone-Based Monomers

Abstract: The synthesis of three novel disulfone-based monomers from readily available hexafluorobenzene and thiols for the preparation of homopolymers and copolymers of intrinsic microporosity (PIMs) is described. The disulfonyl-based PIMs derived from 5,5 0 ,6,6 0 -tetrahydroxy-3,3,3 0 ,3 0 -tetramethylspirobisindane (TTSBI) with tetrafluoroterephthalonitrile (TFTPN) and disulfone-based monomers were prepared at high temperature (160°C) within 1 h. Three new copolymers (monomer molar ratio of TTSBI and disulfonebased … Show more

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Cited by 137 publications
(85 citation statements)
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“…Although pretreatment and cross-linking conditions are also crucial issues in determining the membrane performance, the chemical structure and physical properties of polymer precursors should be considered foremost. Based on the variety of high molecular weight PIMs reported in the literature, [6,[23][24][25][26] PIM-1 (Scheme 1) was selected as the representative polymer in this class of materials, since it is the most widely reported and characterized, due to its simple preparation from commercial monomers, high fractional free volume (FFV), high thermal stability, good processability and mechanical properties. Two diazides (Scheme 1) that are capable of thermal curing were investigated as cross-linking reagents to form the crosslinked PIM.…”
Section: Resultsmentioning
confidence: 99%
“…Although pretreatment and cross-linking conditions are also crucial issues in determining the membrane performance, the chemical structure and physical properties of polymer precursors should be considered foremost. Based on the variety of high molecular weight PIMs reported in the literature, [6,[23][24][25][26] PIM-1 (Scheme 1) was selected as the representative polymer in this class of materials, since it is the most widely reported and characterized, due to its simple preparation from commercial monomers, high fractional free volume (FFV), high thermal stability, good processability and mechanical properties. Two diazides (Scheme 1) that are capable of thermal curing were investigated as cross-linking reagents to form the crosslinked PIM.…”
Section: Resultsmentioning
confidence: 99%
“…This membrane preparation method in which the final drying was performed under air at 70 °C, is a modification of that previously reported. [29] Thickness of the samples was (102±13) µm, and the mass of the membrane used for experiments was 1.1602 g.…”
Section: Membrane and Chemicalsmentioning
confidence: 99%
“…4,18 Although the distance between the spiro centers on the chains was the same as PIM-1, the gas permeability and selectivity of the new PIMs could be tuned by the type of pendent groups as a consequence of space filling and rigidity increase. In the present work, we focus on the design of new ladder-type PIM structures which contain other highly kinked units and/or those having a longer distance between the twist or spiro centers to improve the understanding of structure-property relationships.…”
Section: Introductionmentioning
confidence: 99%