Controlling phosphonic acid substitution degree on proton conducting polyphosphazenes

Hacıvelioğlu, Ferda; Okutan, Elif; Çelik, Sevim Ünügür; Yeşilot, Serkan; Bozkurt, Ayhan; Kılıç, Adem

doi:10.1016/j.polymer.2012.06.033

Cited by 26 publications

(7 citation statements)

References 40 publications

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“…). Monomer 1 showed absorbance at 1022 and 957 cm −1 that belonged to the asymmetric stretching of the POC group in FTIR . The peak at 1215 cm −1 corresponded to PO stretching .…”

Section: Resultsmentioning

confidence: 99%

“…They are also very good adhesives to bind metals due to potentially strong complexation abilities, which also found applications in dental and bone tissue engineering . In the development of highly efficient proton‐conducting fuel‐cell membranes, PCPs can compete with sulfonic acid materials for highly chemical and thermal stabilities . The great interest in these fields has stimulated the originality in exploring new chemical structures of PCPs, endeavors were made in this aim in the recent years.…”

Section: Introductionmentioning

confidence: 99%

“…Phosphate, phosphonate, and phosphinate were the most studied in literatures, other examples can be phosphazene derivatives . Free radical polymerization may be the most conventional method in obtaining PCPs.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Phosphonated homopolymers and copolymers via ring opening metathesis polymerization: T _g tuning, flame resistance, and photolithography

Zhang

Xie

et al. 2015

J. Polym. Sci. Part A: Polym. Chem.

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Phosphonated and epoxy‐containing norbornene based monomers were prepared by Diels–Alder reaction. They were then combined with three other commercial cyclic unsaturated monomers to synthesize phosphonated homopolymers and copolymers via ring opening metathesis polymerization (ROMP) using second‐generation Grubbs catalyst. Glass transitions of these polymers were tunable in a broad range from −14 to 91 °C by varying the flexibility of comonomer. Interestingly, copolymerization with cyclopentene inhibited the crystallization of polycyclopentene, and instead, led to a copolymer with two Tgs. Paradoxically, results from thermogravimetric analysis (TGA) were not consistent with the followed flame‐retarding experiment, implying that the early weight loss from phosphonated moieties did not deleteriously affect the flame‐resistant property which actually depended more on the percentage of char residual after thermal degradation. In application studies, the norbornene derivative phosphonated polymer was tested for the first time as flame retarding material, and showed significant self‐extinguishing ability. In a second study, photolithography was also successfully performed via thiol‐ene “click” chemistry, which allowed the phosphonated polymer a promising negative photoresist. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016, 54, 1396‐1408

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Phosphonated homopolymers and copolymers via ring opening metathesis polymerization: T _g tuning, flame resistance, and photolithography

Zhang

Xie

et al. 2015

J. Polym. Sci. Part A: Polym. Chem.

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“…Therefore, numerous efforts have been made recently to develop highly efficient membranes to support these promising energy devices [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Phosphonated polyimides: Enhancement of proton conductivity at high temperatures and low humidity

Abouzari‐Lotf

Ghassemi

Mehdipour‐Ataei

et al. 2016

Journal of Membrane Science

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“…Recently, demand has risen for alternative non-fluorinated polymeric materials that are more conductive, operable at high temperatures (>120˝C), environmentally benign, and inexpensive [3][4][5][6][7]. Polyphosphazenes [8,9], polybenzimidazole [10], poly(ether sulfone)s [11,12], and poly(ether ketone)s [13][14][15] have been used to prepare membranes for fuel cell applications. These polymers have received much attention because of their high thermal, oxidative, and chemical stability in fuel cell environments, and their performance close to Nafion's [16].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Sulfonated Poly(Phenylene) Containing a Non-Planar Structure and Dibenzoyl Groups

et al. 2016

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Polymers for application as sulfonated polyphenylene membranes were prepared by nickel-catalyzed carbon-carbon coupling reaction of bis(4-chlorophenyl)-1,2-diphenylethylene (BCD) and 1,4-dichloro-2,5-dibenzoylbenzene (DCBP). Conjugated cis/trans isomer (BCD) had a non-planar conformation containing four peripheral aromatic rings that facilitate the formation of π-π interactions. 1,4-Dichloro-2,5-dibenzoylbenzene was synthesized from the oxidation reaction of 2,5-dichloro-p-xylene, followed by Friedel-Crafts reaction with benzene. DCBP monomer had good reactivity in polymerization affecting the activity of benzophenone as an electron-withdrawing group. The polyphenylene was sulfonated using concentrated sulfuric acid. These polymers without any ether linkages on the polymer backbone were protected from nucleophilic attack by hydrogen peroxide, hydroxide anion, and radicals generated by polymer electrolyte membrane fuel cell (PEMFC) operation systems. The mole fraction of the sulfonic acid groups was controlled by varying the mole ratio of bis(4-chlorophenyl)-1,2-diphenylethylene in the copolymer. In comparison with Nafion 211 ® membrane, these SBCDCBP membranes showed ion exchange capacity (IEC) ranging from 1.04 to 2.07 meq./g, water uptake from 36.5% to 69.4%, proton conductivity from 58.7 to 101.9 mS/cm, and high thermal stability.

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Controlling phosphonic acid substitution degree on proton conducting polyphosphazenes

Cited by 26 publications

References 40 publications

Phosphonated homopolymers and copolymers via ring opening metathesis polymerization: T _g tuning, flame resistance, and photolithography

Phosphonated homopolymers and copolymers via ring opening metathesis polymerization: T _g tuning, flame resistance, and photolithography

Phosphonated polyimides: Enhancement of proton conductivity at high temperatures and low humidity

Synthesis and Characterization of Sulfonated Poly(Phenylene) Containing a Non-Planar Structure and Dibenzoyl Groups

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Controlling phosphonic acid substitution degree on proton conducting polyphosphazenes

Cited by 26 publications

References 40 publications

Phosphonated homopolymers and copolymers via ring opening metathesis polymerization: T g tuning, flame resistance, and photolithography

Phosphonated homopolymers and copolymers via ring opening metathesis polymerization: T g tuning, flame resistance, and photolithography

Phosphonated polyimides: Enhancement of proton conductivity at high temperatures and low humidity

Synthesis and Characterization of Sulfonated Poly(Phenylene) Containing a Non-Planar Structure and Dibenzoyl Groups

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Product

Resources

About

Phosphonated homopolymers and copolymers via ring opening metathesis polymerization: T _g tuning, flame resistance, and photolithography

Phosphonated homopolymers and copolymers via ring opening metathesis polymerization: T _g tuning, flame resistance, and photolithography