- 作者: 周大新
- 作者服務機構: Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan, R.O.C.
- 中文摘要: The E and Z-isomers of the titled compound were synthesized by condensation of 2-carboxaldehyde-8-alkyloxyquinoline and N-cyanomethylcarbazole, followed by hydrolysis. The alkoxy protection groups in 3b-c can be cleaved either in acid or in base to yield 3a. All compounds exhibit blue/green luminescence, which may be used as emitting materials in the fabrication of light-emitting diodes. Crystal diffraction analyses were performed for 3a-E, 3d-Z, and 4-Z, while the results indicated the presence of a common structural feature among these molecules. The rings of quinoline are co-planar with the double bond of acrylonitrile, forming a major conjugated chromophore. The carbazole group is twisted along the N(92)-C(2) bond away from the major plane with a large dihedral angle. The major conjugated chromphore was found to be responsible for the spectral properties of these compounds. Protonation of the quinoline in these compounds red-shifted their absorption bands substantially.
- 英文摘要: --
- 中文關鍵字: Carbazole; Hydroxyquinoline; OLED.
- 英文關鍵字: Carbazole; Hydroxyquinoline; OLED.