Communication: High electron mobility in organic thin films has in general
been difficult to achieve. Oxadiazole derivatives are among the most succes
sful electron conducting/hole blocking materials employed in organic light-
emitting devices (OLEDs), the aluminum-oxadiazole complex presented here, t
ris(2-(5-phenyl-1,3,4-oxadiazol-yl)phenonate) aluminum (AIPOP), being no ex
ception. OLEDs based on AIPOP are reported to exhibit a strong blue emissio
n with high external efficiency and brightness and excellent shelf lifetime
stability.