Phosphonium-Functionalized Polyethylene: A New Class of Base-Stable Alkaline Anion Exchange Membranes | Zendy

Kevin J. T. Noonan | Zendy; Kristina M. Hugar | Zendy; Henry A. Kostalik | Zendy; Emil B. Lobkovsky | Zendy; Héctor D. Abruña | Zendy; Geoffrey W. Coates | Zendy

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Phosphonium-Functionalized Polyethylene: A New Class of Base-Stable Alkaline Anion Exchange Membranes

Author(s) -

Kevin J. T. Noonan,

Kristina M. Hugar,

Henry A. Kostalik,

Emil B. Lobkovsky,

Héctor D. Abruña,

Geoffrey W. Coates

Publication year - 2012

Publication title -

journal of the american chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 7.115

H-Index - 612

eISSN - 1520-5126

pISSN - 0002-7863

DOI - 10.1021/ja307466s

Subject(s) - phosphonium , chemistry , hydroxide , base (topology) , polyethylene , polymer chemistry , membrane , ion exchange , polymerization , metathesis , ion , inorganic chemistry , organic chemistry , polymer , mathematical analysis , biochemistry , mathematics

A tetrakis(dialkylamino)phosphonium cation was evaluated as a functional group for alkaline anion exchange membranes (AAEMs). The base stability of [P(N(Me)Cy)(4)](+) was directly compared to that of [BnNMe(3)](+) in 1 M NaOD/CD(3)OD. The high base stability of [P(N(Me)Cy)(4)](+) relative to [BnNMe(3)](+) inspired the preparation of AAEM materials composed of phosphonium units attached to polyethylene. The AAEMs (hydroxide conductivity of 22 ± 1 mS cm(-1) at 22 °C) were prepared using ring-opening metathesis polymerization, and their stabilities were evaluated in 15 M KOH at 22 °C and in 1 M KOH at 80 °C.

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