are generally photocatalyzed by noble metal complexes. Low-cost and easy-to-prepare carbon dots (CDs) are attractive quasi-homogeneous photocatalyst alternatives, but their applicability is limited by their short photoluminescence (PL) lifetimes. By tuning the surface and PL properties of CDs, we designed colloidal CD nano-photocatalysts for a broad range of Ni-mediated cross-couplings between aryl
光氧化还原介导的
镍催化交叉偶联是形成碳-杂原子键的强大转化,通常由贵
金属络合物光催化。低成本且易于制备的碳点 (CD) 是极具吸引力的准均相光催化剂替代品,但它们的适用性受到光致发光 (PL) 寿命短的限制。通过调整 CD 的表面和 PL 特性,我们设计了胶体 CD 纳米光催化剂,用于芳基卤化物和亲核试剂之间广泛的 Ni 介导的交叉偶联。特别是,装饰有
氨基的 CD 允许在温和、无碱的条件下与各种芳基卤化物和
硫醇偶联。机理研究表明 Ni 助催化剂对 CD 激发态进行了动态猝灭,并确定了
碘化
吡啶 (pyHI),