Functionalized Pentacene Derivatives for Use as Red Emitters in Organic Light-Emitting Diodes
A series of three pentacene derivatives featuring substituted aryl groups at the 6,13-position, namely, 6,13-diphenylpentacene, 6,13-bis(2,6-dimethylphenyl)pentacene, and 6,13-bis(4-tert-butylphenyl)pentacene, have been synthesized and characterized. The optical properties of each compound have been...
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Published in | The journal of physical chemistry. B Vol. 108; no. 18; pp. 5492 - 5499 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
American Chemical Society
06.05.2004
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Online Access | Get full text |
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Summary: | A series of three pentacene derivatives featuring substituted aryl groups at the 6,13-position, namely, 6,13-diphenylpentacene, 6,13-bis(2,6-dimethylphenyl)pentacene, and 6,13-bis(4-tert-butylphenyl)pentacene, have been synthesized and characterized. The optical properties of each compound have been determined in solution and in the solid state. Films containing the pentacene derivatives dispersed in tris(quinolin-8-olato)aluminum(III) (Alq3) emit in the red with small contribution from the Alq3 host, signaling efficient energy transfer from host to guest molecules. The absolute photoluminescence quantum yield (φPL) of composite films is ∼30−32% at optimum dopant concentration. Organic light-emitting diodes based on these composite films as the active emitting layers have been fabricated and characterized. External electroluminescence quantum efficiencies near the theoretical limit have been achieved. |
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Bibliography: | istex:63CFF3C11EBD9435E3393E10F8AF5D463A204C0B ark:/67375/TPS-5NRGZKN2-S |
ISSN: | 1520-6106 1520-5207 |
DOI: | 10.1021/jp036199u |