Measuring structural inhomogeneity of a helical conjugated polymer at high pressure and temperature
| Autor: | Matti Knaapila, Suchismita Guha, Zuzana Konôpková, Tummas Napoleon Arge, Dörthe Haase, Hanns-Peter Liermann, Ullrich Scherf |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Phase transition
Materials science Polymers and Plastics Analytical chemistry chemistry.chemical_element 02 engineering and technology Conjugated polymers 010402 general chemistry 01 natural sciences X-ray Neon Polyfluorene chemistry.chemical_compound Chemical-mechanical planarization Materials Chemistry Physical and Theoretical Chemistry chemistry.chemical_classification Scattering Compression Polymer 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Reflection (mathematics) chemistry ddc:660 High pressure measurements 0210 nano-technology |
| Zdroj: | Journal of polymer science / B 57(7), 392-396 (2019). doi:10.1002/polb.24793 Arge, T N, Konôpková, Z, Haase, D, Liermann, H-P, Scherf, U, Guha, S & Knaapila, M 2019, ' Measuring structural inhomogeneity of a helical conjugated polymer at high pressure and temperature ', Journal of Polymer Science. Part B, Polymer Physics, vol. 57, no. 7, pp. 392-396 . https://doi.org/10.1002/polb.24793 |
| Popis: | Journal of polymer science / B 57(7), 392 - 396 (2019). doi:10.1002/polb.24793 We report on X-ray scattering measurements of heli-cal poly[9,9-bis(2-ethylhexyl)-fluorene-2,7-diyl] by mapping thesample with 10μm spatial resolution from 0.3 GPa to 36 GPa.We follow the strongest 00lreflection, which moves towardhigher scattering angles with pressure indicating planarizationof 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 atthe constant pressure of 4.3 GPa in neon. We observe a sharpshift toward higher scattering angles indicative of a phase transi-tion at 167–176C. Published by Wiley, Bognor Regis [u.a.] |
| Databáze: | OpenAIRE |
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