Solution-blended sulfonated polyphenylene and branched poly(arylene ether sulfone): Synthesis, state of water, surface energy, proton transport, and fuel cell performance

Motealleh, Behrooz; Huang, Fei; Largier, Timothy; Khan, Wayz R.; Cornelius, Chris J.

doi:10.1016/j.polymer.2018.11.045

Cited by 16 publications

(4 citation statements)

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“…Finding structure and properties of polymeric membranes are key factors to obtain better efficiency of gas separation from membrane. Various investigations have been conducted on structures and properties of polysulfones [16,17], polyimides [18][19][20], polycarbonates [21,22], polyphenylene ethers [23,24], poly(ether-block-amide)s [25][26][27], polyether ketones [28,29], polydimethylsiloxane [30,31], polyarylates [32,33], poly(vinyl alcohol)s [34], and other polymers. Li et al [12] studied polyethylene glycol (PEG) and cellulose acetate (CA) membranes.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the gas permeability properties from polysulfone/polyethylene glycol composite membrane

et al. 2019

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In this research, the effect of polyethylene glycol (PEG) molecular weight on permeability and selectivity of polysulfone/polyethylene glycol (PSF/PEG) composite membrane is investigated. Polyethylene glycol with molecular weights of 4000, 6000, and 10,000 is applied. It is shown from the results that PEG applied in composite membranes with molecular weight of 1000 had the best diffusivity in comparison with the other composite membranes containing PEG with lower molecular weights. In addition, it is perceived that the permeability of CO 2 from PSF/PEG10000 composite membranes has increased with enhancing weight percent. CO 2 permeability into PSF/PEG composite membranes containing 20 wt% PEG10000 is calculated 7.64 barrer (1 barrer = 10 −10 cm 3 (STP) cm/cm 2 s cmHg). The ideal selectivity for CO 2 /N 2 gas pair in PSF pure membrane and composite membranes containing 10 wt% and 20 wt% PEG10000 are calculated 26.57, 30.61, and 32.12, respectively. Finally, the morphology and membrane structure of the membrane were evaluated with infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and tensile strength test.

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Section: Introductionmentioning

confidence: 99%

Investigation of the gas permeability properties from polysulfone/polyethylene glycol composite membrane

et al. 2019

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“…To synthesize 3-(m-ethynylphenyl)-4-phenyl-2,5-bis{m-[(triisopropyl)silylethynyl]phenyl}cyclopenta-2,4-dien-1-one (1c) as the CP-based monomer for the polymerization to PP-Ic, 1,3-bis(3-bromophenyl)acetone [26] (3) was initially reacted with TIPS acetylene under Sonogashira conditions to give bis(TMS-ethynylphenyl)acetone 4. In parallel, 3-bromobenzil [17] (5) was functionalized with TMS-ethynyl groups and then deprotected with tetra-n-butylammonium fluoride (TBAF) to provide 3-ethynylbenzil (7). Subsequently, a Knoevenagel condensation between 4 and 7 afforded monomer 1c in 59% yield (Scheme 1a).…”

Section: Synthesis Of Tetraphenyl-cp 1cmentioning

confidence: 99%

“…Polyphenylenes (PPs) are polymers with exceptional properties, [1,2] including outstanding mechanical strength as well as thermal and chemical stability. This qualifies them for applications under harsh conditions, such as proton transfer, [3][4][5][6][7] electrodialysis, [8] four extra phenyl rings in addition to the structure of 1a (Figure 1a). [21] PP-Ib was planarized by cyclodehydrogenation furnishing an even wider GNR with a width of ≈2 nm.…”

Section: Introductionmentioning

confidence: 96%

“…Polyphenylenes (PPs) are polymers with exceptional properties, including outstanding mechanical strength as well as thermal and chemical stability. This qualifies them for applications under harsh conditions, such as proton transfer, electrodialysis, and gas‐separation membranes. Linear PPs with phenyl substituents can also serve as precursors for graphene nanoribbons (GNRs), nanometer‐wide strips of graphene.…”

Section: Introductionmentioning

confidence: 99%

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Stepwise Lateral Extension of Phenyl‐Substituted Linear Polyphenylenes

Hou

Narita

Müllen

2019

Macro Chemistry & Physics

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and gas-separation [9,10] membranes. Linear PPs with phenyl substituents can also serve as precursors for graphene nanoribbons (GNRs), nano meter-wide strips of graphene. The underlying concept is to appropriately design branched PP structures that can be fully planarized by CC bond formation between the benzene rings, typically through oxidative cyclodehydrogenation. [1,2,11-13] GNRs synthesized by such bottom-up methods have not only contributed to fundamental studies in condensed matter physics, but they also show potential for future applications in nanoelectronics, photonics, and quantum computing. [14-16] One of the most efficient methods to synthesize PPs is through the use of Diels-Alder cycloadditions between cyclopentadienone (CP) derivatives, usually 2,3,4,5-tetraarylcyclopentadienones, and alkynes leading to both linear and dendritic PPs. [1,2] In comparison with other polymerization methods, typically involving transition metal catalyzed or mediated reactions, Diels-Alder reactions, which proceed without metal catalysts or other reagents, also exhibit high efficiency. [12,17] A 2 B 2-type Diels-Alder polymerizations between an A 2 monomer having two CP moieties and a bisalkyne serving as a B 2 monomer have been known for more than 70 years [18,19] and have provided numerous linear PPs with a backbone of poly[(p-phenylene)-ran-(m-phenylene)]. [2] On the other hand, CP derivatives carrying an alkyne functional group can serve as bifunctional monomers that undergo AB-type Diels-Alder polymerization to yield linear PPs with surprisingly high persistence length. [17,20] Moreover, PPs synthesized by this procedure exhibit higher degrees of polymerizations (DP) than those made by A 2 B 2-type polymerization. [17,21,22] In 2014, we have reported an AB-type Diels-Alder polymerization of tetraphenyl-CP 1a leading to linear PP-Ia with the poly[(p-phenylene)-ran-(m-phenylene)] backbone (Figure 1a). The weight-average molecular weight (M w) of PP-Ia exceeded 600 000 g mol −1 , which was much larger than values obtained with previous PPs prepared by A 2 B 2-type Diels-Alder polymerization. The structure of PP-Ia can be projected into a plane without spatial overlap of benzene rings. "Planarization" of PP-Ia through oxidative cyclodehydrogenation could thus provide structurally defined GNRs. [17] Moreover, we have demonstrated the synthesis of laterally extended linear PP-Ib using CP-based monomer 1b with Polyphenylenes (PPs) are unique polymers showing high mechanical strength and chemical stability, and having potential applications, for example, in proton transfer and gas-separation membranes. Moreover, phenyl-substituted linear PPs can serve as precursors for bottom-up syntheses of graphene nanoribbons (GNRs), a new class of nanoscale carbon materials that appear promising for nanoelectronics. Notably, lateral extensions of linear PPs with appropriate "branched" phenyl substituents, that is, avoiding spatial overlap of benzene rings in their projections into a plane, can lead to wider GNRs with modulated elect...

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Properties of Multiblock Sulfonated Poly(arylene ether sulfone)s Synthesized by Precise Controllable Post-sulfonation for Proton Exchange Membranes

et al. 2022

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Solution-blended sulfonated polyphenylene and branched poly(arylene ether sulfone): Synthesis, state of water, surface energy, proton transport, and fuel cell performance

Cited by 16 publications

References 57 publications

Investigation of the gas permeability properties from polysulfone/polyethylene glycol composite membrane

Investigation of the gas permeability properties from polysulfone/polyethylene glycol composite membrane

Stepwise Lateral Extension of Phenyl‐Substituted Linear Polyphenylenes

Properties of Multiblock Sulfonated Poly(arylene ether sulfone)s Synthesized by Precise Controllable Post-sulfonation for Proton Exchange Membranes

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