This research was conducted in the frame of the joint research program of Latvia, Lithuania, and Taiwan. Financial support from the National Science Council of Taiwan and from the Lithuanian Ministry of Education and Science is gratefully acknowledged. M.-H. T. also thanks support from the Mediatek fellowship. Supporting Information is available online from Wiley InterScience or from the author.
3-(9-Carbazolyl)carbazoles and 3,6-Di(9-carbazolyl)carbazoles as Effective Host Materials for Efficient Blue Organic Electrophosphorescence†
Article first published online: 9 MAR 2007
Copyright © 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Volume 19, Issue 6, pages 862–866, March, 2007
How to Cite
Tsai, M.-H., Hong, Y.-H., Chang, C.-H., Su, H.-C., Wu, C.-C., Matoliukstyte, A., Simokaitiene, J., Grigalevicius, S., Grazulevicius, J. V. and Hsu, C.-P. (2007), 3-(9-Carbazolyl)carbazoles and 3,6-Di(9-carbazolyl)carbazoles as Effective Host Materials for Efficient Blue Organic Electrophosphorescence. Adv. Mater., 19: 862–866. doi: 10.1002/adma.200600822
- Issue published online: 9 MAR 2007
- Article first published online: 9 MAR 2007
- Manuscript Revised: 7 NOV 2006
- Manuscript Received: 14 APR 2006
- National Science Council of Taiwan
- Lithuanian Ministry of Education and Science
- Blue-light emitters;
- Light-emitting diodes, organic
Linking topology in oligocarbazoles (see figure) has a strong influence on their electronic properties. 3(6),9′-linked oligocarbazoles exhibit unusual suppression of electronic coupling between units, leading to localized excited states and very small reduction of triplet energies (compared to the monomer). Coupled with their excellent morphological stability, this makes them suitable as host materials for blue electrophosphorescence devices.