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Picosecond hopping relaxation in conjugated polymers

Title data

Lemmer, Ulrich ; Mahrt, R. F. ; Wada, Y. ; Greiner, Andreas ; Bässler, Heinz ; Göbel, E. O.:
Picosecond hopping relaxation in conjugated polymers.
In: Chemical Physics Letters. Vol. 209 (July 1993) Issue 3 . - pp. 243-246.
ISSN 1873-4448
DOI: https://doi.org/10.1016/0009-2614(93)80101-T

Official URL: Volltext

Abstract in another language

The energy relaxation of optical excitations in poly(p-phenyl-phenylenevinylene) (PPPV) and PPPV blended in polycarbonate (PC) is investigated by means of picosecond time-resolved luminescence spectroscopy. In PPPV a pronounced dependence on the photon energy of the excitation laser is found. For excitation into the tail states of the inhomogeneously broadened density of states distribution, the spectral shape of the luminescence remains almost constant with time. However, a transient red-shift is observed for excitation at higher energies. Experiments on the diluted system PPPV/PC allow us to distinguish between intra-and inter-chain processes. The experimental results can be explained with a hopping model.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: ISI:A1993LK32600010
Keywords: MODEL; POLYACETYLENE; ABSORPTION
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 17 Apr 2015 08:12
Last Modified: 17 Apr 2015 08:12
URI: https://eref.uni-bayreuth.de/id/eprint/10315