Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 10, Issue 1, Pages 157-161Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/a903239h
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Fluorescent metal complexes and dimers have been synthesized and used for organic light-emitting diodes. The metal complexes with conjugated molecular ligands have strong photoluminescence, and showed bright emission of over 10 000 cd m(-2) in bilayer electroluminescent (EL) cells. The EL cell structure was [transparent anode/hole-transport layer/emitting layer/cathode]. The newly synthesized pyrazoline dimers are also highly fluorescent, and they have hole-transport tendency. Therefore, another type of structure [transparent anode/emitting layer/electron-transport layer/cathode] was applied to get emission from the pyrazoline derivatives. As a result, one pyrazoline derivative showed bright blue EL of 1700 cd m(-2) at the maximum when it was combined with an oxadiazole electron-transport material.
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