Title data
Beljonne, David ; Wittmann, H. F. ; Köhler, Anna ; Graham, S. ; Younus, Muhammad ; Lewis, Jack ; Raithby, Paul R. ; Khan, Muhammad S. ; Friend, Richard H. ; Bredas, J.-L.:
Spatial extent of the singlet and triplet excitons in transition metal‐containing poly‐ynes.
In: The Journal of Chemical Physics.
Vol. 105
(1996)
Issue 9
.
- pp. 3868-3877.
ISSN 0021-9606
DOI: https://doi.org/10.1063/1.472207
Abstract in another language
We present a joint experimental and theoretical investigation of the electronic excitations in transition metal‐containing phenylene ethynylenes. The influence of the metal on the nature of the lowest singlet and triplet excited states is characterized. We find that π conjugation occurs through the metal sites, which deeply modifies the optical properties of the conjugated chains. We also analyze the chain‐length dependence of the singlet–singlet, S 0→S 1, singlet–triplet, S 0→T 1, and triplet–triplet, T 1→T n , transition energies; both experimental data and theoretical results indicate that the lowest triplet exciton,T 1, is strongly localized on a single phenylene ring while the S 1 and T n states extend over a few repeating units. Finally, we estimate the geometric relaxation phenomena occurring in the lowest excited states and perform a Huang–Rhys analysis of the triplet emission spectrum in model systems.
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 10:29 |
Last Modified: | 16 Jun 2023 09:38 |
URI: | https://eref.uni-bayreuth.de/id/eprint/8487 |