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Polymersome formation by solvent annealing-induced structural reengineering under 3D soft confinement

查看全文 作　　者：Xi [1]Mao;Hao [1]Li;Jinwoo [2]Kim;Shuai [1]Deng;Renhua [1]Deng;Bumjoon [2]J.Kim;Jintao [1]Zhu 高影响力作者 机构地区：[1]Key Laboratory of Material Chemistry for Energy Conversion and Storage of Ministry of Education(HUST),and State Key Laboratory of Materials Processing and Die&Mold Technology,School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology(HUST),Wuhan,430074,China;[2]Department of Chemical and Biomolecular Engineering,Korea Advanced Institute of Science and Technology(KAIST),Daejeon,34141,Republic of Korea高影响力机构 出　　处：《Nano Research》索引2021年第14卷第12期,共6页高影响力期刊 基　　金：We gratefully acknowledge the financial support from the National Natural Science Foundation of China(No.52003094);the Fundamental Research Funds for the Central Universities(No.2020kfyXJJS011)。 摘　　要：A solvent annealing-induced structural reengineering approach is exploited to fabricate polymersomes from block copolymers that are hard to form vesicles through the traditional solution self-assembly route.More specifically,polystyrene-b-poly(4-vinyl pyridine)(PS-b-P4VP)particles with sphere-within-sphere structure(SS particles)are prepared by three-dimensional(3D)soft-confined assembly through emulsion-solvent evaporation,followed by 3D soft-confined solvent annealing upon the SS particles in aqueous dispersions for structural engineering.A water-miscible solvent(e.g.,THF)is employed for annealing,which results in dramatic transitions of the assemblies,e.g.,from SS particles to polymersomes.This approach works for PS-b-P4VP in a wide range of block ratios.Moreover,this method enables effective encapsulation/loading of cargoes such as fluorescent dyes and metal nanoparticles,which offers a new route to prepare polymersomes that could be applied for cargo release,diagnostic imaging,and nanoreactor,etc. 关 键 词：POLYMERSOME block copolymer three-dimensional(3D)confinement SELF-ASSEMBLY solvent annealing
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