文献类型：期刊文献

英文题名：Self-assembly of graft copolymers in backbone-selective solvents: a route toward stable hierarchical vesicles

作者：Wang, Liquan[1];Jiang, Tao[1];Lin, Jiaping[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Shanghai Key Lab Adv Polymer Mat,Minist Educ, Shanghai 200237, Peoples R China

年份：2013

卷号：3

期号：42

起止页码：19481

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20134216863981);WOS:【SCI-EXPANDED(收录号:WOS:000325554400037)】；

基金：This work was supported by National Natural Science Foundation of China (50925308, 21234002), Key Grant Project of Ministry of Education (313020), National Basic Research Program of China (No. 2012CB933600), Fundamental Research Funds for the Central Universities (222201314024) and Research Fund for the Doctoral Program of Higher Education of China (20120074120002). Support from project of Shanghai municipality (10GG15) is also appreciated.

语种：英文

外文关键词：Grafting (chemical) - Molecular orbitals - Self assembly - Dissipative particle dynamics - Mean field theory

摘要：We employ self-consistent field theory and dissipative particle dynamics simulation to investigate self-assembly of graft copolymers in a backbone-selective solvent. It is found that the graft copolymers are capable of forming hierarchical vesicles such as multilamellar vesicles and large-compound vesicles in dilute solution. The self-consistent field calculations demonstrate that the formed hierarchical vesicles are thermodynamically stable, due to the nature of the graft copolymers. In addition, the dissipative particle dynamics simulations reveal that the pathway of the spontaneous vesicle formation in an initially homogeneous dilute solution is hierarchical. Unilamellar vesicles are first formed along the "standard" pathway, then gradually coalesced to compound or multilamellar sub-vesicles, and finally organized into large-compound or multilamellar vesicles. The results demonstrate the possibility of using two-component copolymers to generate stable aggregates with complex structures, and suggest a versatile and promising route to obtain the advanced nanostructured materials.