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Triplet State Properties of [Os(phen)2dppene]2+ in different host materials and host to guest energy transfer in PVK

  • Emission properties of [Os(phen)2(dppene)]2+ were investigated from 1.4 to 300 K in ethanol, PMMA, and PVK, a matrix which is frequently applied in OLEDs. These data provide the zero-field splitting values of the emitting T1 state and the individual decay times of its substates. The T1 state is assigned to be largely of MLCT character. The splittings change only moderately due to variation of the matrix, whereas the individual decay times are substantially affected. Further, energy transfer from the triplet state of PVK to [Os(phen)2(dppene)]2+ was studied by applying time-resolved emission spectroscopy and is assigned to be dominantly of Dexter type.

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Metadaten
Author:Dominik Pentlehner, I. Grau, H. Yersin
Parent Title (English):Chemical Physics Letters
Document Type:Contribution to a Periodical
Language:English
Publication Year:2008
Tag:Electroluminescent devices; Energy transfer in PVK; Os(phen)2(dppene)]2+
Issue:455
faculties / departments:Fakultät für Chemische Technologie und Wirtschaft
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 54 Chemie
6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten