Proton conducting polysulfone ionomers carrying sulfoaryloxybenzoyl side chains

Benoit Lafitte; Mario Puchner; Patric Jannasch

doi:10.1002/marc.200500391

Proton conducting polysulfone ionomers carrying sulfoaryloxybenzoyl side chains

Benoit Lafitte, Mario Puchner, Patric Jannasch

Centre for Analysis and Synthesis

Research output: Contribution to journal › Article › peer-review

Abstract

Novel proton conducting ionomers have been prepared by attaching pendant sulfonated aromatic side chains to polysulfone. Lithiated polysulfone was first reacted with 4-fluorobenzoic acid chloride to introduce 4-fluorobenzoyl side chains to the polymer main chain. Next, the activated fluoro groups were replaced by 4-sulfophenoxy or 7-sulfo-2-naphthoxy in a potassium carbonate-mediated nucleophilic substitution reaction. This reaction proceeded under full conversion and the degree of substitution was easily controlled by the degree of lithiation in the first step. Membranes based on ionomers carrying one sulfophenoxybenzoyl unit per polymer repeat unit reached a proton conductivity exceeding 30 mS center dot cm(-1) at 120 degrees C under immersed conditions.

Original language	English
Pages (from-to)	1464-1468
Journal	Macromolecular Rapid Communications
Volume	26
Issue number	18
DOIs	https://doi.org/10.1002/marc.200500391
Publication status	Published - 2005

Bibliographical note

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Polymer and Materials Chemistry (LTH) (011001041)

Subject classification (UKÄ)

Chemical Sciences

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10.1002/marc.200500391

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title = "Proton conducting polysulfone ionomers carrying sulfoaryloxybenzoyl side chains",

abstract = "Novel proton conducting ionomers have been prepared by attaching pendant sulfonated aromatic side chains to polysulfone. Lithiated polysulfone was first reacted with 4-fluorobenzoic acid chloride to introduce 4-fluorobenzoyl side chains to the polymer main chain. Next, the activated fluoro groups were replaced by 4-sulfophenoxy or 7-sulfo-2-naphthoxy in a potassium carbonate-mediated nucleophilic substitution reaction. This reaction proceeded under full conversion and the degree of substitution was easily controlled by the degree of lithiation in the first step. Membranes based on ionomers carrying one sulfophenoxybenzoyl unit per polymer repeat unit reached a proton conductivity exceeding 30 mS center dot cm(-1) at 120 degrees C under immersed conditions.",

author = "Benoit Lafitte and Mario Puchner and Patric Jannasch",

note = "The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Polymer and Materials Chemistry (LTH) (011001041)",

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language = "English",

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TY - JOUR

T1 - Proton conducting polysulfone ionomers carrying sulfoaryloxybenzoyl side chains

AU - Lafitte, Benoit

AU - Puchner, Mario

AU - Jannasch, Patric

N1 - The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Polymer and Materials Chemistry (LTH) (011001041)

PY - 2005

Y1 - 2005

N2 - Novel proton conducting ionomers have been prepared by attaching pendant sulfonated aromatic side chains to polysulfone. Lithiated polysulfone was first reacted with 4-fluorobenzoic acid chloride to introduce 4-fluorobenzoyl side chains to the polymer main chain. Next, the activated fluoro groups were replaced by 4-sulfophenoxy or 7-sulfo-2-naphthoxy in a potassium carbonate-mediated nucleophilic substitution reaction. This reaction proceeded under full conversion and the degree of substitution was easily controlled by the degree of lithiation in the first step. Membranes based on ionomers carrying one sulfophenoxybenzoyl unit per polymer repeat unit reached a proton conductivity exceeding 30 mS center dot cm(-1) at 120 degrees C under immersed conditions.

AB - Novel proton conducting ionomers have been prepared by attaching pendant sulfonated aromatic side chains to polysulfone. Lithiated polysulfone was first reacted with 4-fluorobenzoic acid chloride to introduce 4-fluorobenzoyl side chains to the polymer main chain. Next, the activated fluoro groups were replaced by 4-sulfophenoxy or 7-sulfo-2-naphthoxy in a potassium carbonate-mediated nucleophilic substitution reaction. This reaction proceeded under full conversion and the degree of substitution was easily controlled by the degree of lithiation in the first step. Membranes based on ionomers carrying one sulfophenoxybenzoyl unit per polymer repeat unit reached a proton conductivity exceeding 30 mS center dot cm(-1) at 120 degrees C under immersed conditions.

U2 - 10.1002/marc.200500391

DO - 10.1002/marc.200500391

M3 - Article

SN - 1022-1336

VL - 26

SP - 1464

EP - 1468

JO - Macromolecular Rapid Communications

JF - Macromolecular Rapid Communications

IS - 18

ER -

Proton conducting polysulfone ionomers carrying sulfoaryloxybenzoyl side chains

Abstract

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