Measuring structural inhomogeneity of a helical conjugated polymer at high pressure and temperature
(2019) In Journal of Polymer Science, Part B: Polymer Physics 57(7). p.392-396- Abstract
We report on X-ray scattering measurements of helical poly[9,9-bis(2-ethylhexyl)-fluorene-2,7-diyl] by mapping the sample with 10 μm spatial resolution from 0.3 GPa to 36 GPa. We follow the strongest 00l reflection, which moves toward higher scattering angles with pressure indicating planarization of helical polyfluorene. Lateral inhomogeneity is increased for >10 GPa concomitant with the solidification of the pressure transmitting medium (a 4:1 mixture of methanol and ethanol). We also follow the 00l reflection with increasing temperature at the constant pressure of 4.3 GPa in neon. We observe a sharp shift toward higher scattering angles indicative of a phase transition at 167–176 °C.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/714a780d-efca-469d-b38f-fd8b3de27317
- author
- Arge, Tummas Napoleon ; Konôpková, Zuzana ; Haase, Dörthe LU ; Liermann, Hanns Peter ; Scherf, Ullrich ; Guha, Suchismita and Knaapila, Matti LU
- organization
- publishing date
- 2019-02-12
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- compression, conjugated polymers, high pressure measurements, polyfluorene, X-ray
- in
- Journal of Polymer Science, Part B: Polymer Physics
- volume
- 57
- issue
- 7
- pages
- 392 - 396
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- scopus:85061370072
- ISSN
- 0887-6266
- DOI
- 10.1002/polb.24793
- language
- English
- LU publication?
- yes
- id
- 714a780d-efca-469d-b38f-fd8b3de27317
- date added to LUP
- 2019-02-22 10:02:00
- date last changed
- 2023-10-06 21:49:36
@article{714a780d-efca-469d-b38f-fd8b3de27317, abstract = {{<p>We report on X-ray scattering measurements of helical poly[9,9-bis(2-ethylhexyl)-fluorene-2,7-diyl] by mapping the sample with 10 μm spatial resolution from 0.3 GPa to 36 GPa. We follow the strongest 00l reflection, which moves toward higher scattering angles with pressure indicating planarization of helical polyfluorene. Lateral inhomogeneity is increased for >10 GPa concomitant with the solidification of the pressure transmitting medium (a 4:1 mixture of methanol and ethanol). We also follow the 00l reflection with increasing temperature at the constant pressure of 4.3 GPa in neon. We observe a sharp shift toward higher scattering angles indicative of a phase transition at 167–176 °C.</p>}}, author = {{Arge, Tummas Napoleon and Konôpková, Zuzana and Haase, Dörthe and Liermann, Hanns Peter and Scherf, Ullrich and Guha, Suchismita and Knaapila, Matti}}, issn = {{0887-6266}}, keywords = {{compression; conjugated polymers; high pressure measurements; polyfluorene; X-ray}}, language = {{eng}}, month = {{02}}, number = {{7}}, pages = {{392--396}}, publisher = {{John Wiley & Sons Inc.}}, series = {{Journal of Polymer Science, Part B: Polymer Physics}}, title = {{Measuring structural inhomogeneity of a helical conjugated polymer at high pressure and temperature}}, url = {{http://dx.doi.org/10.1002/polb.24793}}, doi = {{10.1002/polb.24793}}, volume = {{57}}, year = {{2019}}, }