Time dependence of the steady state fluorescence in polymer guest-host systems

Title data

Arici, Elif ; Greiner, Andreas ; Raubacher, Florian ; Wendorff, Joachim H.:
Time dependence of the steady state fluorescence in polymer guest-host systems.
In: Macromolecular Chemistry and Physics. Vol. 201 (2000) Issue 14 . - pp. 1679-1686.
ISSN 1521-3935
DOI: https://doi.org/10.1002/1521-3935(20000901)201:14<1679::AID-MACP1679>3.0.CO;2-C

Official URL:

Abstract in another language

The fluorescence of guest-hot systems composed of an amorphous polymer matrix and various concentrations of selected chromophores is considered. Such systems are of interest for applications in organic light emitting diodes. The observation is that the fluorescence results predominantly from excimers and that the excimer emission is strongly reduced as a function of irradiation time in the polymer matrix while no such effects were found for solutions of the chromophore in low molar mass solvents. The rate of change of steady state fluorescence depends on the polymer matric and the process is partially reversible in some guest-host systems. We tentatively attribute the effect to time dependent configurational changes taking place within the chromophore-polymer matrix due to irradiation.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Keywords:	LIQUID-CRYSTALLINE POLYMERS; LIGHT-EMITTING-DIODES; CHAIN; ELECTROLUMINESCENCE; POLYNORBORNENE; SIMULATIONS; MOLECULES; DYNAMICS; PHASE
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:	07 Apr 2015 13:02
Last Modified:	21 Dec 2023 08:54
URI:	https://eref.uni-bayreuth.de/id/eprint/9856