The three-layer electroluminescent ( EL ) devices were fabricated with two amphiphilic8-aminoquinoline derivatives ( H 2 A 12 and H 2 A 16 ) and one complex ( CuA 12 ) as hole transport Layer ( HTL ) .The structure of this EL device was ITO/TPD/HTL/Alq 3 /Al,where HTL being Langmuir-Blodgett films and evaporated films.The hig hest luminance was621cd · m -2 .It were proved that the transport efficiency of H 2 A 16 in LB film was180%higher than that of H 2 A 16 in evaporated film;H 2 A 12 in LB film was320%higher than that of H 2 A 16 in LB film and172%higher than that of CuA 12 in LB film.
