炔基稳定的具有圆偏振发光特性的超原子银簇
Alkynyl-Stabilized Superatomic Silver Clusters Showing Circularly Polarized Luminescence.
作者信息
Zhang Miao-Miao, Dong Xi-Yan, Wang Zhao-Yang, Luo Xi-Ming, Huang Jia-Hong, Zang Shuang-Quan, Mak Thomas C W
机构信息
Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China.
出版信息
J Am Chem Soc. 2021 Apr 28;143(16):6048-6053. doi: 10.1021/jacs.1c02098. Epub 2021 Apr 19.
We report a new enantiomeric pair of superatomic silver clusters, , prepared from chiral alkynyl ligands. and possess symmetry and emit near-infrared (NIR) light with a quantum yield (QY) of 8.0% under ambient condition as well as NIR circularly polarized luminescence (CPL) as a result of the chirality of the excited states. Both experiments and theoretical calculations indicate for the first time that the CPL originates from transitions between superatomic 1P (along the axis) and 1S orbitals. This work opens a new avenue for CPL-active metal nanoclusters by utilizing chiral alkynyl ligands and enlightens the chirality transfer from chiral protecting ligands to superatomic states in metal clusters.
我们报道了一对由手性炔基配体制备的新型对映体超原子银簇合物 。 和 具有 对称性，在环境条件下能发射近红外（NIR）光，量子产率（QY）为8.0%，并且由于激发态的手性而产生近红外圆偏振发光（CPL）。实验和理论计算首次表明，CPL源于超原子1P（沿 轴）和1S轨道之间的跃迁。这项工作通过利用手性炔基配体为具有CPL活性的金属纳米簇开辟了一条新途径，并揭示了手性保护配体到手性金属簇超原子态的手性转移。
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