The creation of metal nanoclusters with dimensions ranging from subnanometre to ~2 nm for heterogeneous catalysis has received substantial attention. However, synthesizing these structures while retaining surface activity and avoiding aggregation is challenging. Here, we report a reverse double-solvents approach that enables encapsulation of highly catalytically active Pd nanoclusters inside the newly formed discrete organic molecular cage, RCC3. By encapsulating within the open cavities of soluble RCC3 cages, the obtained Pd nanocluster cores are produced with precisely controlled size (~0.72 nm) and show high solubility, excellent dispersibility and accessibility in solution, presenting significantly enhanced catalytic activities towards various liquid-phase catalytic reactions. Moreover, owing to the effective confinement of cage cavities, the as-prepared Pd nanoclusters possess excellent stability and durability. The strategy of encapsulation of metal nanoclusters within soluble porous organic cages is promising for developing stable and active catalysts.

用于异相催化的尺寸范围从亚纳米到约2 nm的金属纳米簇的创建已受到广泛关注。然而，在保留表面活性和避免聚集的同时合成这些结构是具有挑战性的。在这里，我们报告了一种反向双溶剂方法，该方法能够在新形成的离散有机分子笼RCC3内封装高催化活性的Pd纳米簇。通过将其封装在可溶性RCC3笼的开口腔中，制得的Pd纳米簇核的尺寸可精确控制（〜0.72 nm），并显示出高溶解度，出色的分散性和在溶液中的可及性，从而显着增强了对各种液相催化的催化活性。反应。而且，由于有效地限制了笼腔，所制备的Pd纳米团簇具有出色的稳定性和耐用性。将金属纳米团簇包封在可溶性多孔有机笼中的策略对于开发稳定和活性的催化剂是有前途的。