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Proton-conducting aromatic polymers carrying hypersulfonated side chains for fuel cell applications

Lafitte, Benoit LU and Jannasch, Patric LU (2007) In Advanced Functional Materials 17(15). p.2823-2834
Abstract
Polysulfone main chains have been functionalized with hypersulfonated aromatic side chains where the sulfonic acid groups were highly concentrated on a local scale, with two acid groups placed on the same aromatic ring. This molecular design was implemented to promote the nanophase separation that takes place in proton-exchange membranes between the hydrophobic polymer main chain and the hydrophilic ionic groups responsible for the water uptake and conduction. Morphological investigations revealed that polysulfones functionalized with disulfonaphthoxybenzoyl or trisulfopyrenoxybenzoyl side chains contained larger and more uniform ionic clusters, as compared to conventionally sulfonated polysulfones where the acid groups are dispersed along... (More)
Polysulfone main chains have been functionalized with hypersulfonated aromatic side chains where the sulfonic acid groups were highly concentrated on a local scale, with two acid groups placed on the same aromatic ring. This molecular design was implemented to promote the nanophase separation that takes place in proton-exchange membranes between the hydrophobic polymer main chain and the hydrophilic ionic groups responsible for the water uptake and conduction. Morphological investigations revealed that polysulfones functionalized with disulfonaphthoxybenzoyl or trisulfopyrenoxybenzoyl side chains contained larger and more uniform ionic clusters, as compared to conventionally sulfonated polysulfones where the acid groups are dispersed along the main chain. Membranes based on the polymers carrying hypersulfonated side chains formed efficient networks of water-filled nanopores upon hydration, which facilitated excellent levels of proton conductivity exceeding that of the commercial Nafion membrane at moderate water uptakes. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Conductivity • Fuel cells • Membranes • Nanoporous materials • Polymers
in
Advanced Functional Materials
volume
17
issue
15
pages
2823 - 2834
publisher
Wiley-VCH
external identifiers
  • wos:000250526300027
  • other:CODEN: AFMDC6
  • scopus:35548956079
ISSN
1616-3028
DOI
10.1002/adfm.200700107
language
English
LU publication?
yes
id
54146e19-15e2-47d5-8f7d-059b7e5146c8 (old id 572110)
alternative location
http://www3.interscience.wiley.com/cgi-bin/abstract/115806173/ABSTRACT
date added to LUP
2007-10-31 16:50:50
date last changed
2017-10-08 03:38:46
@article{54146e19-15e2-47d5-8f7d-059b7e5146c8,
  abstract     = {Polysulfone main chains have been functionalized with hypersulfonated aromatic side chains where the sulfonic acid groups were highly concentrated on a local scale, with two acid groups placed on the same aromatic ring. This molecular design was implemented to promote the nanophase separation that takes place in proton-exchange membranes between the hydrophobic polymer main chain and the hydrophilic ionic groups responsible for the water uptake and conduction. Morphological investigations revealed that polysulfones functionalized with disulfonaphthoxybenzoyl or trisulfopyrenoxybenzoyl side chains contained larger and more uniform ionic clusters, as compared to conventionally sulfonated polysulfones where the acid groups are dispersed along the main chain. Membranes based on the polymers carrying hypersulfonated side chains formed efficient networks of water-filled nanopores upon hydration, which facilitated excellent levels of proton conductivity exceeding that of the commercial Nafion membrane at moderate water uptakes.},
  author       = {Lafitte, Benoit and Jannasch, Patric},
  issn         = {1616-3028},
  keyword      = {Conductivity • Fuel cells • Membranes • Nanoporous materials • Polymers},
  language     = {eng},
  number       = {15},
  pages        = {2823--2834},
  publisher    = {Wiley-VCH },
  series       = {Advanced Functional Materials},
  title        = {Proton-conducting aromatic polymers carrying hypersulfonated side chains for fuel cell applications},
  url          = {http://dx.doi.org/10.1002/adfm.200700107},
  volume       = {17},
  year         = {2007},
}