The reduction of gold ions using four different types of mild reducing agents was carried out in the presence of poly(n-isopropylacrylamide), PNIPAM, particles under light irradiation at room temperature. Simply controlling the concentration ratios of the gold ions to reductants allowed for the systematic formation of physically encapsulated gold nanoparticles (AuNPs) within the PNIPAM particles due to the presence of weak interactions between the guest AuNPs and host PNIPAM particles. After the examination of the structural and physical properties of the AuNPs and their loading efficiency, the composite particles were extensively utilized in the aerobic homocoupling of phenylboronic acid in EtOH to examine their catalytic properties associated with the rate of reaction, selectivity, and activation energy (E_a). All composite particles showed the highly selective formation of the biphenyl product and comparable E_a values, regardless of the size and distribution of the encapsulated AuNPs as catalysts. However, the way the AuNPs were formed within the PNIPAM particles notably influenced the rate of reaction. As such, developing a simple approach to optimize the encapsulation degree of AuNPs and their structural features in the presence of polymer particles can be applied to designing diverse metal-polymer composite particles for rapid and effective catalytic systems.

使用四种不同类型的温和还原剂还原金离子是在聚 (n-异丙基丙烯酰胺)、PNIPAM 颗粒的存在下在室温光照射下进行的。由于客体 AuNPs 和主体 PNIPAM 颗粒之间存在弱相互作用，简单地控制金离子与还原剂的浓度比就可以在 PNIPAM 颗粒内系统地形成物理封装的金纳米颗粒 (AuNPs)。在检查了 AuNPs 的结构和物理性质及其负载效率后，复合颗粒被广泛用于苯硼酸在乙醇中的有氧同源偶联，以检查其与反应速率、选择性和活化能相关的催化性能。一个_{_}）。所有复合颗粒都显示出高选择性的联苯产物形成和相当的 E _a值，无论封装的 AuNPs 作为催化剂的尺寸和分布如何。然而，在 PNIPAM 颗粒内形成 AuNP 的方式显着影响了反应速率。因此，开发一种简单的方法来优化 AuNPs 的封装程度及其在聚合物颗粒存在下的结构特征可用于设计用于快速有效催化系统的各种金属-聚合物复合颗粒。