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Measuring Structural Inhomogeneity of Conjugated Polymer at High Pressures up to 30 GPa

Knaapila, Matti ; Torkkeli, Mika ; Konopkova, Zuzana ; Haase, Dörthe LU ; Liermann, Hanns-Peter ; Scherf, Ullrich and Guha, Suchismita (2013) In Macromolecules 46(20). p.8284-8288
Abstract
We present X-ray scattering data from helical poly[9,9-bis(2-ethylhexyl)-fluorene-2,7-diyl] by mapping the sample with 10 mu m spatial resolution at pressures up to 31 GPa. Neon is used as pressure transmitting medium. Reduction of torsion angle between adjacent repeats is observed during compression and found to be reversible upon decompression. Chain conformation does not depend on lateral position of sample in the pressure range from 1 to 7 GPa but depends significantly when pressure is increased from 7 to 31 GPa. Crystallite orientation does not depend on pressure or lateral position. The radiation damage is studied optically ex situ and proved to be insignificant.
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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Macromolecules
volume
46
issue
20
pages
8284 - 8288
publisher
The American Chemical Society (ACS)
external identifiers
  • wos:000326209400023
  • scopus:84886608672
ISSN
0024-9297
DOI
10.1021/ma401661t
language
English
LU publication?
yes
id
8111d06f-ba99-4826-bf96-f33d18adb7f9 (old id 4212763)
date added to LUP
2016-04-01 09:52:10
date last changed
2022-01-25 17:24:27
@article{8111d06f-ba99-4826-bf96-f33d18adb7f9,
  abstract     = {{We present X-ray scattering data from helical poly[9,9-bis(2-ethylhexyl)-fluorene-2,7-diyl] by mapping the sample with 10 mu m spatial resolution at pressures up to 31 GPa. Neon is used as pressure transmitting medium. Reduction of torsion angle between adjacent repeats is observed during compression and found to be reversible upon decompression. Chain conformation does not depend on lateral position of sample in the pressure range from 1 to 7 GPa but depends significantly when pressure is increased from 7 to 31 GPa. Crystallite orientation does not depend on pressure or lateral position. The radiation damage is studied optically ex situ and proved to be insignificant.}},
  author       = {{Knaapila, Matti and Torkkeli, Mika and Konopkova, Zuzana and Haase, Dörthe and Liermann, Hanns-Peter and Scherf, Ullrich and Guha, Suchismita}},
  issn         = {{0024-9297}},
  language     = {{eng}},
  number       = {{20}},
  pages        = {{8284--8288}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Macromolecules}},
  title        = {{Measuring Structural Inhomogeneity of Conjugated Polymer at High Pressures up to 30 GPa}},
  url          = {{http://dx.doi.org/10.1021/ma401661t}},
  doi          = {{10.1021/ma401661t}},
  volume       = {{46}},
  year         = {{2013}},
}