| 초록 |
Three different new hole transport compounds, namely, 2-[1-{4-(N, N-diphenylamino)phenyl}-3, 4, 5, 6-tetraphenylbenzene-2-yl]5-N, N-diphenylaminopyridine(DPAP-TB), 2-[1-{4-(N-phenylnaphthalene-1-amino)phenyl}-3, 4, 5, 6-tetraphenylbenzene-2-yl]5-(N-phenylnaphthalen-1-amino)pyridine(1-PNAP-TB) and 2-[1{4-(N-phenylnaphthalen-1-amino)phenyl}-3, 4-,5, 6-tetraphenylbenzene-2-yl]-5-(N-phenylnaphthalen-2-amino)pyridine(2-PNAP-TB) were synthesized. Optical and electronic properties were examined by UV-Visible absorption spectrum and cyclic voltammetry. Luminance efficiencies and external quantum efficiencies of DPAP-TB, 1-PNAP-TB and 2-PNAP-TB were 3.72, 2.82, 3.30 cd/A, and 1.29, 0.97, 1.12 % at 10 mA/cm2, respectively. Synthesized materials exhibited high Tg in the range of 118 to 133 ℃. These values are higher than that of NPB which is commonly used as a hole transporting material. |
