Self-controlled Polymer Reactors With Tandem/Non-tandem Catalysis

Catalysts are closely related to industry,economy and society,and the realization of controllable and convertible tandem catalytic reactions is a trend for future industrial development.The rapid development of polymer reactors composed of temperature-responsive polymers and metal nanoparticles has opened up new avenues for controllable catalysis.However,in practical applications,polymer reactors such as poly(N-isopropylacrylamide)(PNIPA)loaded with metal nanoparticles are not only unable to achieve tandem catalysis,but also unable to switch between tandem and non-tandem catalytic reactions,forcing researchers to develop more intelligent polymer reactors.Aiming at the development demand of tandem catalyst,this paper aims to solve the problem that polymer reactors cannot realize controllable switching in the current catalytic process,and designs a variety of polymer reactors with different properties from the functional layer of polymer reactors and their combination mode.Firstly,the functional layer with different performance is introduced into polymer reactor.poly(N-isopropylacrylamide)was used as the switch layer,poly(2-acrylamido-2-methylpropanesulfonic acid)(PAMP)was used as the catalytic hydrolysis layer,and poly(vinyl imidazole-co-acrylic acid)(P(VIm-co-AAc))loaded with silver nanoparticles was used as the switchable catalytic reduction layer.By changing the temperature,the polymer reactor can be reverted and the catalytic reaction can be switched between series and non-series,so that the polymer reactor with self-reversing ability is prepared.Secondly,this paper introduces the popular molecular imprinting technology into the development of polymer reactor from the research of the first part.poly(2-acrylamido-2-methylpropanesulfonic acid)was used as the functional layer for catalytic hydrolysis of substrates,and silver nanoparticles and poly N,N-diethyl acrylamide(PDA)with molecular imprinting were used as the functional layers for controllable identifiable catalytic reduction.The hydrophilic/hydrophobic conversion of temperature-responsive PDA acts as a switch in the substrate channel,and due to the presence of molecular imprinting,it can recognize substrate molecules at low temperatures,thus realizing a polymer reactor with a controllable catalytic process and identifiable substrate molecules.Finally,based on the above research,a dual-response temperature polymer reactor is designed and synthesized in this paper.Among them,poly(N,N-diethyl acrylamide-co-2-acrylamide-2-methylpropanesulfonic acid)(P(DA-co-AMP))has controllable catalytic hydrolysis function,and poly(N-isopropylacrylamide)loaded with silver nanoparticles has controllable catalytic reduction function.By adjusting the temperature,the switch state of the polymer reactor can be controlled,and the polymer reactor with double temperature response can be prepared in this way.Above all,this paper innovatively studies the design and synthesis of patient-controlled polymer reactors,and combines the catalytic reaction law of multiple polymer reactors at multiple temperature intervals,which provides a certain theoretical and experimental basis for the future development of patient-controlled polymer reactors,and also opens up research ideas for the development of tandem catalysts.