Abstract In this work, a new method is proposed to meet the challenge of preparing new catalysts with cascade/non-cascade switching catalytic property. Inspired from “soft” characteristics and divisional isolation function in natural biological systems, this objective was accomplished by developing a new class of hydrogels made of two unique functional layers with different temperature responses where each may self-govern coupled processes at a specific temperature. This hydrogel polymer reactor exhibited almost no catalytic activity at low-temperature range ( 50 °C), the hydrogel catalytic polymer reactor further exhibited significant efficiency towards the hydrolysis reaction of NPA as well as the reduction of the intermediate product p-nitrophenol (NP). This mainly resulted from the opening of both the weak polymer complexes and the stronger polymer complexes hydrogel layers, allowing entrance to both the acidic catalytic active center and the metal nanoparticles active center. As a result, the novel hydrogel polymer reactor could be used to control cascade/non-cascade catalysis reactions. This new protocol enables efficient control of switchable tandem reactions, inspiring for difficulty to control tandem catalytic reactors.

中文翻译：

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具有级联/非级联切换催化剂特性的智能双层聚合物反应器

摘要 在这项工作中，提出了一种新方法来应对制备具有级联/非级联切换催化性能的新型催化剂的挑战。受自然生物系统中的“软”特性和分区隔离功能的启发，这一目标是通过开发一类新的水凝胶来实现的，该水凝胶由两个具有不同温度响应的独特功能层组成，其中每个层都可以在特定温度下自主控制耦合过程。该水凝胶聚合物反应器在低温范围（50°C）下几乎没有催化活性，水凝胶催化聚合物反应器进一步对NPA的水解反应以及中间产物对硝基苯酚（NP）的还原表现出显着的效率. 这主要是由于弱聚合物配合物和强聚合物配合物水凝胶层的打开，允许进入酸性催化活性中心和金属纳米颗粒活性中心。因此，新型水凝胶聚合物反应器可用于控制级联/非级联催化反应。这种新协议能够有效控制可切换的串联反应，激发控制串联催化反应器的难度。