Efficient Emission from Ligand-dendron Functionalized Europium Complexes Li Shangfeng, Zhu Weihong, Pan Jianfeng, Xu Zhongyu, Tian He* (Institute of Fine Chemicals, East China University of Science &Technology, Shanghai 200237) Abstract Novel dendron-like europium complexes Eu(BPPD)3(Phen) and Eu(BCPD)3(Phen), whose ligands contain unsymmetrical diphenyl b-diketone and phenanthroline, have been synthesized. The structure characteristic is that the carrier transporting carbazole units are incorporated into the ligands via dendron functionalization. The two complexes exhibit strong red-light luminescence with narrow half-peak-width located at 613nm in solid state or solution. Furthermore, comparing to the reference complex Eu(BPPD)3(Phen), the solid state luminance intensity of Eu(BCPD)3(Phen) is increased by 5.7 times, which can be attributed to the light-harvesting antenna effect of carbazole units and F?rster singlet energy transfer. Key words Dendron-like, Europium complexes, Luminescence, Carbazole 配体树枝功能化的铕配合物的发光性能 李尚丰 朱为宏 潘建峰 徐仲玉 田 禾* (华东理工大学精细化工研究所 上海 200237) 摘 要 通过树枝化手段，合成了新型具有树枝结构的铕配合物(BCPD)3(Phen)和参比物 Eu(BPPD)3(Phen)。其配体是不对称的?-二酮和氮杂菲啉，以在不对称的 b-二酮的配体中通过树枝功能化，开发具有载流子传输功能的基于过渡金属配合物的发光材料。该类通过配体树枝功能化的发光材料无论是在溶液中还是固态，都呈现出极强的发光强度，最大发光波长在 613nm 处，而且半峰宽较窄。研究表明在配体中引入树枝功能化的咔唑单元，具有光采集天线效应，发生 F?rster 单线态能量转移。与参比物 Eu(BPPD)3(Phen)相比，配合物 Eu(BCPD)3(Phen)的固体发光强度增强 5.7 倍。 关键词 树枝状 铕配合物 发光强度 咔唑 李尚丰 男，26 岁，博士生，现从事树枝状发光材料的研究。*联系人 E-mail: tianhe@ecust.edu.cn 国家自然科学基金(20106006)和上海市科委及上海市教委资助项目 2004-04-27收稿，2004-06-23接受 (PDF全文下载c04086)