摘要
以2-溴-9-乙基-9H-咔唑为原料,首先与联硼酸频那醇酯经宫浦硼基化反应制得相应的有机硼产物,再与溴代物发生传统的铃木偶联反应合成了3种新型的环金属配体(3a^3c);3a^3c依次与三氯化铱及传统辅助配体乙酰丙酮反应合成了3个新型含苯并唑类(苯并恶唑、苯并噻唑和苯并吡唑)环金属铱配合物(4a^4c),其结构经~1H NMR和MS(ESI或FAB)表征。并对其紫外和荧光光谱进行了研究。结果表明:4a^4c由于主配体的结构微调,可实现发光颜色由黄绿色到橙色的调控。
Three novel cyclometalated ligands (3a - 3c)were prepared by Miyaura borylation reaction and Suzuki coupling reaction from 2-bromo-9-ethyl-9H-earbazole. Three novel eyclometalated benzox- azole-based (benzoxazole, benzothiazole and indazole) iridium (III) complexes ( 4a -4c) were synthe- sized by reaction of 3a - 3c with iridium chloride and acetylacetone successively. The structures were characterized by 1H NMR and MS(ESI or FAB). The photophysical properties of 4a - 4c were studied by UV-Vis absorption and emission spectra. The results showed that the phosphorescent emission of 4a - 4c can be realized from yellow green to orange, which is mainly dependent on the main ligand structure.
出处
《合成化学》
CAS
CSCD
2017年第4期282-286,共5页
Chinese Journal of Synthetic Chemistry
基金
国家自然科学基金资助项目(21501037)
教育部创新团队项目(IRT-16R19)
海南省教育厅基金资助项目(Hnky2015-27)
海南师范大学2016年省级大学生创新创业训练计划项目