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Synthesis and properties of novel hole transport materials for electroluminescent devices
Author(s) -
Thelakkat Mukundan,
Fink Ralf,
Haubner Frank,
Schmidt HansWerner
Publication year - 1998
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19981250114
Subject(s) - triphenylamine , electroluminescence , tris , materials science , amine gas treating , cyclic voltammetry , optoelectronics , common emitter , aluminium , photochemistry , layer (electronics) , chemistry , nanotechnology , organic chemistry , electrochemistry , electrode , composite material , biochemistry
We synthesized low molecular weight triphenyldiamines (TPDs), novel 1,3,5‐tris(diarylamino)benzenes (TDABs), polymeric triphenyldiamines and insoluble triphenylamine networks based on tris(4‐ethynylphenyl)amine as hole transport materials for electroluminescent displays. The HOMO energy values as determined from cyclic voltammetry measurements for TPDs and TDABs are between −4.97 and −5.16 eV. By using a polymeric TPD as hole transport layer and tris(8‐quinolinolato) aluminium as emitter, LEDs with an onset voltage of 3V and a luminance up to 900 cd/m 2 were obtained under ambient conditions.