文献类型：期刊文献

英文题名：Tunable Multicolor Circularly Polarized Luminescence via Co-assembly of One Chiral Electron Acceptor with Various Donors

作者：Wang, Fang[1,2];Shen, Chengshuo[1];Gan, Fuwei[1];Zhang, Guoli[1];Qiu, Huibin[1]

机构：[1]Shanghai Jiao Tong Univ, Frontiers Sci Ctr Transformat Mol, Zhangjiang Inst Adv Study, Sch Chem & Chem Engn,State Key Lab Met Matrix Com, Shanghai 200240, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Specially Funct Polymer Mat & Related Tec, Shanghai 200237, Peoples R China

年份：2023

卷号：5

期号：7

起止页码：1592

外文期刊名：CCS CHEMISTRY

收录：WOS:【ESCI(收录号:WOS:000841133100001)】；

基金：This work was financially supported by the National Key R&D Program of China (grant no. 2020YFA0908100), the National Natural Science Foundation of China (grant nos. 92056110 and 22075180), the Innovation Program of Shanghai Municipal Education Commission (grant no. 202101070002E00084), the Science and Technology Commission of Shanghai Municipality (grant nos. 20JC1415000 and 21XD1421900), and the China Postdoctoral Science Foundation (grant no. 2019M661480).

语种：英文

外文关键词：circularly polarized luminescence; charge transfer; chirality; co-assembly; supramolecular chemistry

摘要：Chiroptical materials with multicolor and signinvertible circularly polarized luminescence (CPL) are important for advanced optical devices and display technologies. Here, a general strategy is developed to generate CPL with highly tunable emission bands and handedness through charge-transfer (CT) complexation and co-assembly of one chiral non-emissive tetranitrofluorene-based acceptor with various achiral purple to blue emissive donors. The resulting assemblies exhibit intense CPL with a rich array of colors (519-668 nm) and prominent dissymmetry factors (|glum|) in the range of 10(-3)-10(-2). Notably, the CPL sign can be readily inverted by slightly changing the molecular structure of achiral donors. Single-crystal analysis reveals that the donor and acceptor molecules are alternately and asymmetrically packed in a lamellar fashion through CT interactions, leading to efficient transfer of chirality. Furthermore, the refined packing is mediated by the intensity and manner of CT interactions, rendering an inversion of chirality. The chiral co-assembly not only occurs for planar achiral donor molecules, but is also accessible to nonplanar conjugated molecules such as [4]helicene derivatives. Thus, the CPL feature of the resulting products can be easily and broadly manipulated, aiming at advanced chiroptical systems.