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Aqueous Solution Behavior of Anionic Fluorene-co-thiophene-Based Conjugated Polyelectrolytes

Burrows, Hugh D.; Tapia, Maria J.; Fonseca, Sofia M.; Valente, Artur J. M.; Lobo, Victor M. M.; Justino, Licinia L. G.; Qiu, Song; Pradhan, Swapna; Scherf, Ullrich and Chattopadhyay, Nitin, et al. (2009) In ACS Applied Materials and Interfaces 1(4). p.864-874
Abstract
Two anionic fluorene-thiophene alternating copolymers, poly[9,9-bis(4-sulfonylbutoxyphenyl)fluorene-2,7-diyl-2,5-thienylene] (PBS-PFT) and poly [9,9-bis(4-sulfonylbutoxyphenyl)fluorene-2,7-diyl-2,2'-bithiophene-5,5'- diyl] (PBS-PF2T), have been synthesized and their solution behaviors in water studied by UV-vis absorption spectroscopy, fluorescence, and electrical conductivity and compared with that of the previously studied conjugated polyelectrolyte (CPE) poly[9,9-bis(4-sulfonylbutoxyphenyl)fluorene-2,7-diyl-1,4-phenylene] (PBS-PFP). These conjugated polymers do not form solutions at the molecular level in water but instead form clusters. information on the structure of these clusters for PBS-PF2T comes from small-angle X-ray and neutron... (More)
Two anionic fluorene-thiophene alternating copolymers, poly[9,9-bis(4-sulfonylbutoxyphenyl)fluorene-2,7-diyl-2,5-thienylene] (PBS-PFT) and poly [9,9-bis(4-sulfonylbutoxyphenyl)fluorene-2,7-diyl-2,2'-bithiophene-5,5'- diyl] (PBS-PF2T), have been synthesized and their solution behaviors in water studied by UV-vis absorption spectroscopy, fluorescence, and electrical conductivity and compared with that of the previously studied conjugated polyelectrolyte (CPE) poly[9,9-bis(4-sulfonylbutoxyphenyl)fluorene-2,7-diyl-1,4-phenylene] (PBS-PFP). These conjugated polymers do not form solutions at the molecular level in water but instead form clusters. information on the structure of these clusters for PBS-PF2T comes from small-angle X-ray and neutron scattering. The relative ease of dispersing the copolymers in water increases with an increase in the number Of thiophene rings in these alternating copolymers. Semiempirical calculations on the structure suggest that this results from bending of the chains and increased conformational flexibility, decreasing interchain interactions. These CPEs can be dissolved in water at the molecular level using the nonionic surfactants n-dodecylpentaoxyethylene glycol ether (C12E5) or Triton X-100 to obtain systems with increased photoluminescence quantum yield and increased electrical conductivity that can be solution-processed for potential applications as components of sensory or optoelectronic devices. (Less)
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Contribution to journal
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published
subject
keywords
copolymers, fluorene-thiophene, conjugated polyelectrolytes, solution processing, polyelectrolyte aggregation
in
ACS Applied Materials and Interfaces
volume
1
issue
4
pages
864 - 874
publisher
The American Chemical Society
external identifiers
  • wos:000267536100018
  • scopus:77950585168
ISSN
1944-8244
DOI
10.1021/am800267n
language
English
LU publication?
yes
id
2dcf1546-4130-4fdd-a64c-eaafbab241fc (old id 1463512)
date added to LUP
2009-08-18 09:02:09
date last changed
2017-01-01 04:59:32
@article{2dcf1546-4130-4fdd-a64c-eaafbab241fc,
  abstract     = {Two anionic fluorene-thiophene alternating copolymers, poly[9,9-bis(4-sulfonylbutoxyphenyl)fluorene-2,7-diyl-2,5-thienylene] (PBS-PFT) and poly [9,9-bis(4-sulfonylbutoxyphenyl)fluorene-2,7-diyl-2,2'-bithiophene-5,5'- diyl] (PBS-PF2T), have been synthesized and their solution behaviors in water studied by UV-vis absorption spectroscopy, fluorescence, and electrical conductivity and compared with that of the previously studied conjugated polyelectrolyte (CPE) poly[9,9-bis(4-sulfonylbutoxyphenyl)fluorene-2,7-diyl-1,4-phenylene] (PBS-PFP). These conjugated polymers do not form solutions at the molecular level in water but instead form clusters. information on the structure of these clusters for PBS-PF2T comes from small-angle X-ray and neutron scattering. The relative ease of dispersing the copolymers in water increases with an increase in the number Of thiophene rings in these alternating copolymers. Semiempirical calculations on the structure suggest that this results from bending of the chains and increased conformational flexibility, decreasing interchain interactions. These CPEs can be dissolved in water at the molecular level using the nonionic surfactants n-dodecylpentaoxyethylene glycol ether (C12E5) or Triton X-100 to obtain systems with increased photoluminescence quantum yield and increased electrical conductivity that can be solution-processed for potential applications as components of sensory or optoelectronic devices.},
  author       = {Burrows, Hugh D. and Tapia, Maria J. and Fonseca, Sofia M. and Valente, Artur J. M. and Lobo, Victor M. M. and Justino, Licinia L. G. and Qiu, Song and Pradhan, Swapna and Scherf, Ullrich and Chattopadhyay, Nitin and Knaapila, Matti and Garamus, Vasil M.},
  issn         = {1944-8244},
  keyword      = {copolymers,fluorene-thiophene,conjugated polyelectrolytes,solution processing,polyelectrolyte aggregation},
  language     = {eng},
  number       = {4},
  pages        = {864--874},
  publisher    = {The American Chemical Society},
  series       = {ACS Applied Materials and Interfaces},
  title        = {Aqueous Solution Behavior of Anionic Fluorene-co-thiophene-Based Conjugated Polyelectrolytes},
  url          = {http://dx.doi.org/10.1021/am800267n},
  volume       = {1},
  year         = {2009},
}