杭州师范大学朱雨田团队报道了乳液约束自组装法，制备金属纳米粒子修饰嵌段共聚物杂化粒子及其催化应用。相关研究成果发表在2023年12月11日出版的国际学术期刊《中国化学》。

金属纳米粒子（NPs）修饰的嵌段共聚物（BCP）杂化纳米粒子因其在催化、医疗和生物工程中的实际价值而引起人们的极大关注。BCPs在蒸发乳液液滴内的受限组装被证明是提供聚合物支架以负载金属NPs的有效方法。然而，到目前为止，产生不同类型的金属纳米粒子修饰的BCP杂化纳米粒子仍然具有挑战性。

该文中，研究人员采用聚苯乙烯-2-乙烯基吡啶（PS-b-P2VP）的乳液约束自组装，以及随后的Au和钯（Pd）NPs在明确的BCP颗粒上的种子介导生长，设计了一系列Au/Pd修饰的BCP杂化纳米颗粒，其对用NaBH₄还原剂将4-硝基苯酚还原为4-氨基苯酚表现出优异的催化活性。

该项工作可能会激励更多的研究人员，研究不同金属纳米粒子在聚合物支架上的选择性修饰，拓宽无机/有机杂化纳米粒子的潜在应用。

附：英文原文

Title: Controlled Synthesis of Metal-Nanoparticles Decorated Block Copolymer Hybrid Particles via Emulsion Confined Self-assembly and Their Catalytic Applications

Author: Xiaohua Chang, Qunli Yu, Dan Ji, Yutian Zhu

Issue&Volume: 2023-12-11

Abstract: Metal nanoparticles (NPs) decorated block copolymer (BCP) hybrid nanoparticles have attracted enormous attention for their actual value in catalysis, medical therapy, and bioengineering. The confined assembly of BCPs within evaporative emulsion droplet is verified as an effective method to provide polymeric scaffolds to load metal NPs. However, to date, it remains challenging to generate different types of metal NPs decorated BCP hybrid nanoparticles. Herein, we employed the emulsion confined self-assembly of poly(styrene-b-2-vinylpyridine) (PS-b-P2VP) and the followed seed-mediated growth of Au and palladium (Pd) NPs onto well-defined BCP particles to design a series of Au/Pd decorated BCP hybrid nanoparticles, which exhibited excellent catalytic activity for the reduction of 4-nitrophenol to 4-aminophenol with the reductant of NaBH4. This work may inspire more researchers to investigate the selective decoration of different metal NPs onto the polymeric scaffolds, broadening the potential applications of the inorganic/organic hybrid nanoparticles.

DOI: 10.1002/cjoc.202300596

Source: https://onlinelibrary.wiley.com/doi/10.1002/cjoc.202300596