文献类型：期刊文献

中文题名：F?rster共振能量转移诱导稀土铕化合物稳定发射超 不对称、窄带圆偏振光

英文题名：FRET endows rare earth Eu(III) complex with stable ultra-dissymmetry and narrowband circularly polarized luminescence

作者：Ren, Yiran[1,3];Chen, Zhi[1];Hu, Honglong[2,3];Zhang, Zixuan[1];Yang, Bo[1];Zheng, Zhigang[3];Yu, Zhen-Qiang[1];Li, Xiaopeng[1];Zhu, Wei-Hong[2];Wu, Yue[1]

机构：[1]Shenzhen Univ, Coll Chem & Environm Engn, Shenzhen 518071, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Key Lab Adv Mat, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China

年份：2025

卷号：68

期号：3

起止页码：879

外文期刊名：SCIENCE CHINA-MATERIALS

收录：;EI(收录号：20251118021183);WOS:【SCI-EXPANDED(收录号:WOS:001383455200001)】；

基金：This work was supported by the National Natural Science Foundation of China (92356301), the Innovation Research Foundation of Shenzhen (20231120172320001 and JCYJ20220818095807016), and Shanghai Municipal Science and Technology Major Project (2018SHZDZX03).

语种：中文

外文关键词：circularly polarized luminescence; FRET; liquid crystal; narrowband; rare earth luminescence

摘要：Narrowband circularly polarized luminescence (CPL) is a crucial parameter for high color purity display but rarely studied. However, it is rather challenging and significant to provide a route towards high-dissymmetry CPL with both persistent chiroptical stability and narrowband emission. Despite possessing a very narrowband emission and excitation from the unique f-f transition of electrons, the chiral rare earth complexes often racemize with the low inversion barrier, resulting in an undesirable decrease of CPL signal. Herein, we report a circularly polarized F & ouml;rster resonance energy transfer (C-FRET) in a liquid crystal (LC) coassembly that contains axially chiral alkoxy binaphthyl (R/S-BN) as donor and narrowband emission-featured rare earth Eu(III) complex (EuOL) as acceptor. These highly ordered helical superstructures enable achiral EuOL to emit ultra-dissymmetric CPL, accompanying with a high dissymmetry factor up to 1.44 from LC microcavity resonance. The EuOL@R/S-BN exhibits extremely CPL narrowband with full width at half maximum of 10.8 nm. Compared with the direct excitation, the specific C-FRET strategy in LC coassembly can indirectly emit the highly dissymmetric and narrowband CPL, and completely overcome the CPL weakness from the essential chiral racemization of rare earth Eu(III) complexes. Such LC C-FRET strategy can guarantee the chiroptical stability, high dissymmetry and narrowband emission, which is anticipated to put forward a new route toward the further utilization of rare earth and advanced display technology. (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic) (sic)(sic)(sic)(sic)(sic)(sic). (sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) (sic), (sic)(sic)(sic)(sic). (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)f-f(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) (sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) (sic). (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)F & ouml;rster(sic)(sic)(sic)(sic)(sic) (sic)(C-FRET)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(R/S-BN)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic) (sic)(sic)(sic)(EuOL)(sic)(sic)(sic)(sic). (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)EuOL(sic) (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) (sic)1.44, (sic)(sic)(sic)(sic)10.8 nm. (sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)CFRET (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic) (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) (sic),(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).