AIE 引发原子精确手性铜（I）炔基簇的圆偏振发光。
AIE Triggers the Circularly Polarized Luminescence of Atomically Precise Enantiomeric Copper(I) Alkynyl Clusters.
机构信息
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China.
College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, 454000, China.
出版信息
Angew Chem Int Ed Engl. 2020 Jun 15;59(25):10052-10058. doi: 10.1002/anie.201908909. Epub 2019 Sep 18.
Atomically precise enantiomeric metal clusters are scarce, and copper(I) alkynyl clusters with intense circularly polarized luminescence (CPL) responses have not been reported. A pair of chiral alkynyl ligands, (R/S)-2-diphenyl-2-hydroxylmethylpyrrolidine-1-propyne (abbreviated as R/S-DPM) we successfully prepared and single crystals were characterized of optically pure enantiomeric pair of atomically-precise copper(I) clusters, Cu (R/S-DPM) (denoted as R/S-Cu ), which feature bright red luminescence and CPL with a high luminescence anisotropy factor (g ). A dilute solution containing R/S-Cu was nonluminescent and CPL inactive at room temperature. Crystallization- and aggregation-induced emission (CIE and AIE, respectively) contribute to the triggering of the CPL of R/S-Cu in the crystalline and aggregated states. Their AIE behavior and good biocompatibility indicated applications of these copper(I) clusters in cell imaging in HeLa and NG108-15 cells.
原子精确的对映金属簇很稀缺，具有强烈圆偏振发光（CPL）响应的铜（I）炔基簇尚未被报道。我们成功制备了一对手性炔基配体（R/S）-2-二苯基-2-羟甲基吡咯烷-1-丙炔（缩写为 R/S-DPM），并对其单晶进行了表征，得到了光学纯的原子精确对映铜（I）簇[Cu（R/S-DPM）]（PF6）（表示为 R/S-Cu），其具有明亮的红色发光和 CPL，发光各向异性因子（g）较高。在室温下，含有 R/S-Cu 的稀溶液不发光且 CPL 无活性。结晶和聚集诱导发光（分别为 CIE 和 AIE）有助于触发 R/S-Cu 在结晶和聚集状态下的 CPL。它们的 AIE 行为和良好的生物相容性表明这些铜（I）簇在 HeLa 和 NG108-15 细胞中的细胞成像中的应用。
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