Wang Xin, Guo Xuhong, Cohen Stuart Martien A, Wang Junyou, Ding Peng
State-Key Laboratory of Chemical Engineering, Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
Polymers (Basel). 2023 Apr 19;15(8):1935. doi: 10.3390/polym15081935.
Polyelectrolyte nanogel consisting of charged network is a prospective platform for developing nanoreactor due to their integrated features of both polyelectrolyte and hydrogel. In this work, cationic poly (methacrylatoethyl trimethyl ammonium chloride) (PMETAC) nanogels with regulated size (30-82 nm) and crosslinking degree (10-50%), has been synthesized by Electrostatic Assembly Directed Polymerization (EADP) method and applied to load gold nanoparticles (AuNPs). Based on the typical reduction reaction of 4-nitrophenol (4-NP), the catalytic performance of the constructed nanoreactor was examined by studying their kinetic process, where the loaded AuNPs exhibited dependent activity on crosslinking degree of nanogels, while independent catalytic activity on nanogel size. Our results validate that, polyelectrolyte nanogels are capable of loading metal NPs and regulating their catalytic performance, therefore demonstrates potential for developing functional nanoreactors.
由带电网络组成的聚电解质纳米凝胶由于其兼具聚电解质和水凝胶的综合特性，是开发纳米反应器的一个有前景的平台。在这项工作中，通过静电组装定向聚合（EADP）方法合成了尺寸（30 - 82纳米）和交联度（10 - 50%）可控的阳离子聚（甲基丙烯酸乙酯基三甲基氯化铵）（PMETAC）纳米凝胶，并将其用于负载金纳米颗粒（AuNPs）。基于4-硝基苯酚（4-NP）的典型还原反应，通过研究其动力学过程考察了构建的纳米反应器的催化性能，其中负载的AuNPs表现出对纳米凝胶交联度的依赖性活性，而对纳米凝胶尺寸具有独立的催化活性。我们的结果证实，聚电解质纳米凝胶能够负载金属纳米颗粒并调节其催化性能，因此展示了开发功能性纳米反应器的潜力。
