Recently, π-conjugated oligomers such as oligophenylenes and oligothiophenes have received considerable attention as electronic materials. 1 Thin films of these low molecular weight compounds can be obtained by sublimation under high vacuum and used for electronic devices such as organic field-effect transistors and organic light-emitting diodes (OLEDs). 2 For OLEDs, each organic layer (hole-transport, emission, and electron- ...
