| 초록 |
Metal chalcogenide magic-sized nanoclusters (MSCs) have shown intriguing photophysical and chemical properties, yet ambient instability has hampered their extensive applications. Here we designed a diamine-based heat-up self-assembly process to assemble MSCs into MOF-like suprastructures (SSs), obtaining enhanced stability and solid-state photoluminescence quantum yields (from ＜1% to ~72%). We also exploited the atomic-level miscibility of Cd and Zn to synthesize Mn2+:(Cd1−xZnxSe)13 alloy SSs with tunable metal synergy; Mn2+:(Cd0.5Zn0.5Se)13 SSs demonstrated high catalytic activity (turnover number, 17,964 per cluster in 6 h; turnover frequency, 2,994 per cluster per hour) for converting CO2 to organic cyclic carbonates under mild reaction conditions. The enhanced stability, photoluminescence and catalytic activity through combined cluster-assembly and metal synergy advance the usability of inorganic semiconductor nanoclusters. |
