Synthesis and light-emitting properties of organic electroluminescent compounds and their metal complexes

作     者：CUIJianzhong KimSung-Hoon 

作者机构：DepartmentofChemistryTianjinUniversityTianjin300072China DepartmentofDyeingandFinishingKyungpookNationalUniversityDaegu702-701Korea 

出 版 物：《Chinese Science Bulletin》 (CHINESE SCIENCE BULLETIN)

年 卷 期：2004年第49卷第8期

页      面：797-802页

核心收录：

学科分类：08[工学] 0803[工学-光学工程] 

基　　金：Ministry of Education of the People's Republic of China,MOE Scientific Research Foundation for Returned Scholars of Ministry of Education 

主　　题：轻发射复合物 晶体结构 有机场致发光化合物 波长转移 金属复合物 

摘      要：Several organic electroluminescent (EL) com-pounds,2,2′-(1,4-phenylenedivinylene)bis-3,3-dimethyl-in- dolenine (1),2,2′-(1,4-phenylenedivinylene)bis-benzoxazole (2), 2,2′-(1,4-phenylenedivinylene)bis-benzothiazole (3), 4,4′-(1,4-phenylenedivinylene)bis-quinoline (4),2,2′-(1,4-phenyle-nedivinylene)bis-quinoline (5),2,2′-(1,4-phenylenedivinyle-ne)bis-1,3,3-trimethyl-indoleninedichloride(6),2,2′-(1,4- phenylene-divinylene)bis-1-hydro-3,3-dimethylindolenine dichloride (7),2,2′-(1,4-phenylenedivinylene)bis-8-acetoxy- quinoline (8), 2,2′-(1,4-phenylenedivinylene)bis-8-hydroxyq- uinoline (9) and metal complexes of 9, Al(PHQ) (10) and Zn(PHQ) (11), have been synthesized and characterized. The crystal structure of 6 was determined. Light emitting proper-ties of the prepared compounds have been investigated. 1 produces an orange-yellow emission (lmax = 575 nm). The cation, 6, gives a red emission (lmax = 607 nm), which is shifted 32 nm to the red compared to 1. 8 produces a yellow emission (lmax = 567 nm). The metal complex 10 gives a red emission (lmax = 610 nm), which is a red shift of 43 nm com-pared to 8. The change in structure in the prepared com-pound caused a change in the electron distribution in the compounds, which induces a large wavelength shift of the emitted-light. Thermal analysis showed that the decomposi-tion temperatures of the metal complexes (10, 11) were higher than those for the smaller organic molecular com-pounds (1-9). Therefore, metal complexes (10, 11) can be used as EL materials over a larger temperature range.