Induced Absolute Configuration of Achiral Tetradentate Ligands in Metal–Organic Frameworks for Circularly Polarized Luminescence
作者:Hong‐Ru Fu、Dan‐Dan Ren、Kun Zhang、Hong Chen、Xiaoyan Lu、Qing‐Rong Ding、Lu‐Fang Ma
DOI:10.1002/cjoc.202300645
日期:——
(MOFs) (DCF-17/LCF-17, DCF-18/LCF-18) by utilizing tetradentate ligands tetra(3-imidazoylphenyl)ethylene (TIPE) and 4,4'-[4',5'-bis[4-(4-pyridinyl)phenyl][1,1':2',1”-terphenyl]-4,4”-diyl]bis[pyridine] (TPPP) as linkers. It can be observed that the spontaneous resolution of the achiral ligands is converted into the induced resolution, and the ligands form the absolute configuration by using enantiopure
手性分子的结晶对于理解分级手性的起源和演化,揭示结构手性与圆偏振发光(CPL)活性之间的关系具有重要意义。在这里,我们利用四齿配体四(3-咪唑基苯基)乙烯(TIPE)和4,4报道了两对手性金属有机框架(MOF)(DCF-17/LCF-17、DCF-18/LCF-18) '-[4',5'-双[4-(4-吡啶基)苯基][1,1':2',1”-三联苯]-4,4”-二基]双[吡啶] (TPPP) 为连接器。可以观察到,使用对映体纯樟脑酸(cam)作为手性诱导试剂(CIR),非手性配体的自发拆分转化为诱导拆分,配体形成绝对构型。因此,外消旋 MOF 可以被驱动产生绝对纯手性结晶。制备了另外两种非手性MOFs [Cd(D-cam)(TPPP) 0.5 ] (AF-1,AF =非手性框架)和[Cd(L-cam)(TPPP) 0.5 ] (AF-2)。D / L -cam骨架的位置紊乱导致非手性化的产生,