Search Results - "Peckham, Timothy J"

Structure-Morphology-Property Relationships of Non-Perfluorinated Proton-Conducting Membranes by Peckham, Timothy J., Holdcroft, Steven

“…A fundamental understanding of structure‐morphology‐property relationships of proton exchange membranes (PEMs) is crucial in order to improve the cost,…”
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Highly Stable, Low Gas Crossover, Proton‐Conducting Phenylated Polyphenylenes by Adamski, Michael, Skalski, Thomas J. G., Britton, Benjamin, Peckham, Timothy J., Metzler, Lukas, Holdcroft, Steven

“…Two classes of novel sulfonated phenylated polyphenylene ionomers are investigated as polyaromatic‐based proton exchange membranes. Both types of ionomer…”
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Structurally-Defined, Sulfo-Phenylated, Oligophenylenes and Polyphenylenes by Skalski, Thomas J. G, Britton, Benjamin, Peckham, Timothy J, Holdcroft, Steven

“…We report the synthesis and molecular characterization of structurally defined, sulfo-phenylated, oligo- and polyphenylenes that incorporate a novel…”
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Sulfophenylated Terphenylene Copolymer Membranes and Ionomers by Skalski, Thomas J. G., Adamski, Michael, Britton, Benjamin, Schibli, Eric M., Peckham, Timothy J., Weissbach, Thomas, Moshisuki, Takashi, Lyonnard, Sandrine, Frisken, Barbara J., Holdcroft, Steven

“…The copolymerization of a prefunctionalized, tetrasulfonated oligophenylene monomer was investigated. The corresponding physical and electrochemical properties…”
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Cationic Polyelectrolytes, Stable in 10 M KOHaq at 100 °C by Fan, Jiantao, Wright, Andrew G, Britton, Benjamin, Weissbach, Thomas, Skalski, Thomas J. G, Ward, Jonathan, Peckham, Timothy J, Holdcroft, Steven

“…We report on poly­(arylene-imidazoliums), which were synthesized by microwave polycondensation of dialdehyde with bisbenzil and quantitatively functionalized…”
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Nanostructure, Morphology, and Properties of Fluorous Copolymers Bearing Ionic Grafts by Tsang, Emily M. W, Zhang, Zhaobin, Yang, Ami C. C, Shi, Zhiqing, Peckham, Timothy J, Narimani, Rasoul, Frisken, Barbara J, Holdcroft, Steven

“…In order to probe the effects of polymer microstructure on the properties of proton conducting polymer membranes, three series of fluorous−ionic graft…”
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Relationships of Acid and Water Content to Proton Transport in Statistically Sulfonated Proton Exchange Membranes:  Variation of Water Content Via Control of Relative Humidity by Peckham, Timothy J, Schmeisser, Jennifer, Holdcroft, Steven

“…An in-depth analysis for proton exchange membranes to examine the effects of acid concentration and effective proton mobility upon proton conductivity as well…”
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Effect of ketone versus sulfone groups on the properties of poly(arylene ether)-based proton exchange membranes by Lee, Hsu-Feng, Britton, Benjamin, Huang, Yi-Chiang, Peckham, Timothy J., Hsu, Yi-Yun, Tseng, Yu-Chao, Huang, Pei-Chen, Lee, Chun-Che, Chang, Mei-Ying, Holdcroft, Steven, Huang, Wen-Yao

“…A series of sterically encumbered, sulfonated, alternating poly(arylene ether) copolymers were synthesized so as to compare the effects of incorporating ketone…”
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CeO2, ZrO2 and YSZ as mitigating additives against degradation of proton exchange membranes by free radicals by Weissbach, Thomas, Peckham, Timothy J., Holdcroft, Steven

“…The effect of CeO2 and ZrO2 on the durability of perfluorinated sulfonic acid ionomer membranes in proton exchange membrane fuel cells is widely discussed in…”
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Selective Formation of Hydrogen and Hydroxyl Radicals by Electron Beam Irradiation and Their Reactivity with Perfluorosulfonated Acid Ionomer by Ghassemzadeh, Lida, Peckham, Timothy J, Weissbach, Thomas, Luo, Xiaoyan, Holdcroft, Steven

“…Selective formation and reactivity of hydrogen (H•) and hydroxyl (HO•) radicals with perfluorinated sulfonated ionomer membrane, Nafion 211, is described…”
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A Stable Hydroxide-Conducting Polymer by Thomas, Owen D., Soo, Kristen J. W. Y., Peckham, Timothy J., Kulkarni, Mahesh P., Holdcroft, Steven

“…A stable hydroxide-conducting membrane based on benzimidazolium hydroxide and its analogous anion-exchange polymer is reported for the first time. The…”
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Simultaneous, Synergistic Control of Ion Exchange Capacity and Cross-Linking of Sterically-Protected Poly(benzimidazolium)s by Weissbach, Thomas, Wright, Andrew G, Peckham, Timothy J, Sadeghi Alavijeh, Alireza, Pan, Vivian, Kjeang, Erik, Holdcroft, Steven

“…The application of highly charged anion exchange membranes is often limited by strong water sorption leading to excessive swelling and eventual dissolution,…”
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Highly Stable, Low Gas Crossover, Proton‐Conducting Phenylated Polyphenylenes by Adamski, Michael, Skalski, Thomas J. G., Britton, Benjamin, Peckham, Timothy J., Metzler, Lukas, Holdcroft, Steven

“…Two classes of novel sulfonated phenylated polyphenylene ionomers are investigated as polyaromatic‐based proton exchange membranes. Both types of ionomer…”
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Living Anionic Polymerization of Phosphorus-Bridged [1]Ferrocenophanes:  Synthesis and Characterization of Well-Defined Poly(ferrocenylphosphine) Homopolymers and Block Copolymers by Peckham, Timothy J, Massey, Jason A, Honeyman, Charles H, Manners, Ian

“…The living anionic ring-opening polymerization (ROP) of the phosphorus-bridged [1]ferrocenophane (η-C5H4)2FePPh initiated by n-BuLi in THF at 25 °C has allowed…”
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Sulfonated polybenzimidazoles: Proton conduction and acid-base crosslinking by Thomas, Owen D, Peckham, Timothy J, Thanganathan, Uma, Yang, Yunsong, Holdcroft, Steven

“…A series of soluble, benzimidazole-based polymers containing sulfonic acid groups (SuPBI) has been synthesized. SuPBI membranes resist extensive swelling in…”
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Structure–property relationships for a series of polyimide copolymers with sulfonated pendant groups by Savard, Olivier, Peckham, Timothy J., Yang, Yunsong, Holdcroft, Steven

“…A series of high molecular weight, sulfonated polyimide copolymers (8a–f) with controlled acid contents have been obtained using…”
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Synthesis, Structure, and Ring-Opening Polymerization (ROP) of a Phosphonium-Bridged [1]Ferrocenophane by Peckham, Timothy J, Lough, Alan J, Manners, Ian

“…The stable phosphonium-bridged [1]ferrocenophane [(η-C5H4)2FePPhMe][OTf] (10b) was synthesized by the reaction of the phosphorus-bridged [1]ferrocenophane…”
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Cationic Polyelectrolytes, Stable in 10 M KOH aq at 100 °C by Fan, Jiantao, Wright, Andrew G, Britton, Benjamin, Weissbach, Thomas, Skalski, Thomas J G, Ward, Jonathan, Peckham, Timothy J, Holdcroft, Steven

“…We report on poly(arylene-imidazoliums), which were synthesized by microwave polycondensation of dialdehyde with bisbenzil and quantitatively functionalized by…”
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CeO 2 , ZrO 2 and YSZ as mitigating additives against degradation of proton exchange membranes by free radicals by Weissbach, Thomas, Peckham, Timothy J., Holdcroft, Steven

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Synthesis, Characterization, and Properties of High Molecular Weight Poly(ferrocenylgermanes) and Poly(ferrocenylsilane)−Poly(ferrocenylgermane) Random Copolymers by Peckham, Timothy J, Massey, Jason A, Edwards, Mark, Manners, Ian, Foucher, Daniel A

“…A series of high molecular weight poly(ferrocenylgermanes) [Fe(η-C5H3X)2GeR2] n 5a−d (X = H; a, R = Me; b, R = Et; c, R = n-Bu; d, R = Ph) and 7 (X = SiMe3, R…”
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