Premium
Preparation of hole transporting polymers by condensation polymerization of triphenylamine derivatives
Author(s) -
Sato Hisaya,
Ogino Kenji,
Hirai Hidenori
Publication year - 2001
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 - 10.1002/1521-3900(200110)175:1<159::aid-masy159>3.0.co;2-d
Subject(s) - triphenylamine , polymerization , monomer , polymer chemistry , polymer , aldehyde , condensation polymer , amine gas treating , materials science , photochemistry , alkyl , chemistry , organic chemistry , catalysis
Hole transporting polymers were prepared by condensation polymerization of triphenylamine and N,N,N',N'‐tetraphenylbenzidine (TPD) having alkyl group with aldehydes in the presence of p ‐toluenesulfonic acid. The obtained polymers had molecular weight higher than 10,000 and good film formation ability. It was found that the aromatic amine monomers were connected with aldehyde monomer at the p ‐position of the phenyl group. TPD‐aldehyde polymers had almost the same UV absorption and redox potentials as those of TPD monomer indicating that the electronic structure of amine unit did not change by the polymerization. The hole transporting mobility was in the range of 10 −3 ‐10 −6 cm 2 /Vs. The electroluminescent device consisting of ITO/TPD polymer/Alq/Mg‐Ag had a maximum luminance of 9000 cd/m 2 .