at Google ScholarTitle data
Rudnick, Alexander ; Kass, Kim-Julia ; Preis, Eduard ; Scherf, Ullrich ; Bässler, Heinz ; Köhler, Anna:
Interplay of localized pyrene chromophores and π−conjugation in novel poly(2,7-
pyrene) ladder polymers.
In: The Journal of Chemical Physics.
Vol. 146
(2017)
.
- 174903.
ISSN 0021-9606
DOI: https://doi.org/10.1063/1.4982046
Abstract in another language
We present a detailed spectroscopic study, along with the synthesis, of conjugated, ladder-type 2,7-linked poly(pyrene)s. We observe a delocalization of the first singlet excited state along the polymer backbone, i.e., across the 2,7 linkage in the pyrene moiety, in contrast to earlier studies on conjugated 2,7-linked poly(pyrene)s without ladder structure. The electronic signature of the pyrene unit is, however, manifested in an increased lifetime and reduced oscillator strength as well as a modified vibronic progression in absorption of the singlet state compared to a ladder-type poly(para-phenylene) (MeLPPP). Furthermore, the reduced oscillator strength and increased lifetime slow down Förster-type energy transfer in films, where this transfer occurs to sites with increasing inter-chain coupling of H-type nature.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| 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: | Yes |
| DDC Subjects: | 500 Science > 530 Physics |
| Date Deposited: | 09 May 2017 06:55 |
| Last Modified: | 06 Jul 2023 11:52 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/37082 |