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Structure-Regulated Polymer Reactors And Their Functional Catalysis

Posted on:2019-01-28Degree:MasterType:Thesis
Country:ChinaCandidate:C C ZuoFull Text:PDF
GTID:2381330566472195Subject:Materials engineering
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Catalysis plays a critical rolein the development of chemical industry.The significance of sequential catalysis and self-controlled catalysis is beyond doubt because of the excellence in catalytic ability.However,in the practical application,the sequential catalytic processes are often not compatible with each other and even engage in each other.Moreover,self-controlledcarrier is inclined to cause the leakage and loss of the metal nanoparticles in the switching process,which makes it necessary to excogitate more intelligent polymer reactor.This study aimed at addressing the present challenge in catalysis and studied in depth from the aspects such as molecular design,controllable catalysis and dynamics of the polymer reactor,creating a nature-inspired sequential catalytic reactor,a self-governed catalytic reactor with quantum mechanics-regulated access,and a domino reactor.The research can be summed up in the following aspects:Firstly,it is necessary toprevent the consecutive multi-step reactions from mutual interferences and even allow these multistep reactions to run in the individual compartments.Inspired by the features at natural biological systems,herein,the study introduced the catalysis of partition in cells into the synthesis of nanoreactor,developing a nature-inspired sequential catalytic reactor to realize the separation of different chemical reaction.This nanoreactor is made of nature-inspired "active" compartments consisting of core-and-shell architectures that catalytically separate the tandem hydrolysis and reduction.The alignment of these compartments with each other would also allow the catalytic transformations in the prior compartments to be relayed in time to the succeeding reactions in the latter compartments.In this way,the nanoreactor as the cascade reactors allow the consecutive multistep processes to proceed in a spatiotemporally-tuned way.Secondly,in the practical catalysis,it is also necessary to overcome the leakage and loss of the metal nanoparticles in the switching process.This paper reported a unique polymer composite reactor inspired from marine mussels,composite of an aquatically autonomous polymer and encapsulated metal nanoparticles.The aquatically autonomous properties in association with the instinctive anchor for metal nanoparticles allowed the reactor to behave like the mussels' protocol for escaping ocean waves,catalytically constituting quantum mechanics-regulated access,which led to the occurrence of aquatically self-governed catalytic ability.Finally,based on the above research,we also created a domino reactor with multi-step reaction.Inspiredbymulti-step reaction in biological system,the three-layered dominoreactorwere constructed.In the reactor,the catalytic reaction in each layer can be carried out independently.The end of the A reaction leads to the B reaction,which further leads to the C and D reaction.In this way,we demonstrated that a three-step catalytic reaction proceeds in one potby fabricating the three-layer nanoreactor,which paves the way for unforeseen “one-pot”sequential reactions.With the help of the above parts,the micromolecular structure of the catalytic reactor is constructed,and catalytic reactorsare developed based on thesequential reaction,self-governed catalysis,and Domino properties.The design principle and the function catalysis of the reactor are determined by the structure.The research and design of the catalytic reactor provides a source of thought for the application and further development of intelligent polymers.
Keywords/Search Tags:Tandem catalysis, self-controlledcatalysts, metal nanoparticles, Domino reaction
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