A new series of thiophene-containing glass-forming hydrazones is synthesized. The thermal, photoelectrical, and optical properties of these compounds are examined. The synthesized hydrazones exhibit the thermal stability sufficient fin. their application in optoelectronic devices. The values of ionization potential of amorphous films of the newly synthesized hydrazones are from 4.43 to 5.79eV. The hole drift mobilities measured by the xerographic time-of-flight method in a molecularly doped polymer containing 50 wt.% of one synthesized hydrazone exceed 10(6) cm(2)/Vs at an electric field intensity of 6.4 x 10(-5) V cm(-1).