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Construction of an Au12Cd2 nanocluster with circularly polarized luminescence by a metal- and ligand-exchange strategy.

ABSTRACT: Excellent luminescence properties and unique chiral structures enable nanoclusters to be a novel class of circularly polarized luminescence (CPL) materials, and their precise structures facilitate the clarification of structure-activity relationships. However, efficiently preparing nanoclusters with CPL properties is still a great challenge. In this work, the luminescent properties as well as the molecular symmetry were simultaneously manipulated to transform the centrosymmetric Au14Cd1 into a chiral Au12Cd2 nanocluster, which has CPL properties. In detail, Cd doping and chiral-ligand exchange were performed simultaneously on the Au14Cd1 nanocluster to realize its photoluminescence enhancement and chiral-framework construction by increasing the alloying degree which is defined as deep-alloying and chiral ligand induction at the same time, resulting in the formation of an Au12Cd2 nanocluster with CPL properties. Further investigations revealed an increased alloying degree in the structure-maintained M6 kernel of Au12Cd2, which results in a 15-fold enhancement in quantum yield.

SUBMITTER: Zhou J 

PROVIDER: S-EPMC10967255 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature

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Construction of an Au<sub>12</sub>Cd<sub>2</sub> nanocluster with circularly polarized luminescence by a metal- and ligand-exchange strategy.

Zhou Jun J   Yang Xiaofei X   Zheng Peisen P   Li Qinzhen Q   Li Xiaowu X   Chai Jinsong J   Huang Baoyu B   Yang Sha S   Zhu Manzhou M  

Chemical science 20240223 13

Excellent luminescence properties and unique chiral structures enable nanoclusters to be a novel class of circularly polarized luminescence (CPL) materials, and their precise structures facilitate the clarification of structure-activity relationships. However, efficiently preparing nanoclusters with CPL properties is still a great challenge. In this work, the luminescent properties as well as the molecular symmetry were simultaneously manipulated to transform the centrosymmetric Au<sub>14</sub>C  ...[more]

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