at Google ScholarTitle data
Khan, Amena L. T. ; Banach, Michael J. ; Köhler, Anna:
Control of β-phase formation in polyfluorene thin films via Franck–Condon analysis.
In: Synthetic Metals.
Vol. 139
(2003)
Issue 3
.
- pp. 905-907.
ISSN 0379-6779
DOI: https://doi.org/10.1016/S0379-6779(03)00244-3
Abstract in another language
In the blue light-emitting polymer poly(9,9-dioctylfluorene) (PFO) two distinct morphological phases have been identified, that is the glassy phase and a planar β-phase. We show that the proportion of the formation of the two phases can be controlled by simply spinning thin films from different solvents such as chloroform and cyclopentanone. We use a Franck–Condon analysis with vibrational modes obtained from Raman spectra to analyze the emission spectra at low temperature. Films spun from cyclopentanone are dominated by from the β-phase emission while films spun from chloroform have a high fraction of glassy phase emission. Comparison between absorption and emission spectra shows evidence for spectral diffusion from the glassy to the β-phase. We discuss the Huang–Rhys parameters for both phases.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | No |
| Institutions of the University: | Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics II - Optoelectronics of Soft Matter > Chair Experimental Physics II - Optoelectronics of Soft Matter - Univ.-Prof. Dr. Anna Köhler Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics II - Optoelectronics of Soft Matter |
| Result of work at the UBT: | No |
| DDC Subjects: | 500 Science > 530 Physics |
| Date Deposited: | 18 Mar 2015 08:20 |
| Last Modified: | 18 Mar 2015 08:20 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/8460 |