Polymer self-assembly is an important branch of the self-assembly field,and research on the precise control of its assembly process and function is necessary to further broaden its application scope.Gas,as a"green"stimulus,different from conventional physical or chemical signals,is of great significance for the regulation of the self-assembly process of polymers.Combining the work of our research group,this paper systematically introduces two types of new gas-regulated polymer assembly systems:"gas-responsive polymers"and"gas-constructed polymers".Gas-responsive polymers can respond to external gas signal stimulation,change their amphiphilicity or aggregation state by reacting with gas molecules and specific chemical moieties in the polymer,thereby affecting their self-assembly behavior and outputting functions.The progress of research on the design and controllable assembly of gas-sensitive polymers is summarized,focusing on the three major gas signal molecules in living organisms—hydrogen sulfide(H2S),carbon monoxide(CO),and nitric oxide(NO)as stimuli sources.Gas-constructed polymers use gas molecules as assembly units to construct polymer materials.Then introduces the"dynamic gas bridge"formed between boron/phosphorus frustrated Lewis acid-base pairs and gas molecules such as carbon dioxide(CO2),as well as research on the structure design,dynamic self-assembly,and functional applications of gas-constructed polymers.Finally,the future development of these two types of gas regulated polymers was discussed.Gas-responsive polymers can be used in the design of multi-signal molecule-programmed responsive systems,achieving intelligent intracellular targeted release and carrier transport functions.Gas-constructed polymers,while having universality for a broad spectrum of gas molecules,lack selectivity for single gas molecules and have poor chemical tolerance in the design of complex functions.The solution to this problem will lay the foundation for the development of a wider range of functional gas-constructed assembly materials.
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维普
