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Measuring structura...
Measuring structural inhomogeneity of a helical conjugated polymer at high pressure and temperature
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- Arge, Tummas Napoleon (author)
- Technical University of Denmark
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- Konôpková, Zuzana (author)
- German Electron Synchrotron (DESY)
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- Haase, Dörthe (author)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Liermann, Hanns Peter (author)
- German Electron Synchrotron (DESY)
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- Scherf, Ullrich (author)
- University of Wuppertal
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- Guha, Suchismita (author)
- University of Missouri-Columbia
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- Knaapila, Matti (author)
- Technical University of Denmark
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(creator_code:org_t)
- 2019-02-12
- 2019
- English.
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In: Journal of Polymer Science, Part B: Polymer Physics. - : Wiley. - 0887-6266. ; 57:7, s. 392-396
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Abstract
Subject headings
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- 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.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Keyword
- compression
- conjugated polymers
- high pressure measurements
- polyfluorene
- X-ray
Publication and Content Type
- art (subject category)
- ref (subject category)
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