초록 |
The electron-deficient moiety, 2,5-diphenyl-1,3,4-oxadiazole-diyl (Oxd), and the hole transporting moiety, N-carbazolyl (Cz), with flexible spacer of sufficient length as the side chain of Cz-Oxd-PF and Cz-PF-co-Oxd-PF units, provides a highly improved electron and hole transporting property due to intrachain interaction, and efficient mixing between Oxd and Cz moieties with chromophores on the main chain. We measured the electrical and optical properties of Cz-Oxd-PF and Cz-PF-co-Oxd-PF samples which were compared with those of polyalkylfluorene (PF) sample. |