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

Self-assembly of graft copolymers in backbone-selective solvents: a route toward stable hierarchical vesicles
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接枝共聚物在主链选择性溶剂中的自组装:通往稳定分层囊泡的途径

DOI:
10.1039/c3ra43355b
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发表时间:
2013-10
期刊:
影响因子:
3.9
通讯作者:
Jiaping Lin
Jiaping Lin
中科院分区:
化学3区
文献类型:
--
作者:
Liquan Wang;Tao Jiang;Jiaping Lin

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我们采用自洽场理论和耗散粒子动力学模拟研究了接枝共聚物在主链选择性溶剂中的自组装。结果表明,该接枝共聚物在稀溶液中可形成多层囊泡和大复合囊泡等分级囊泡。自洽场计算表明,所形成的分层囊泡是热稳定的,由于接枝共聚物的性质。此外,耗散粒子动力学模拟表明,在初始均匀的稀溶液中,自发囊泡形成的途径是分层的。单层囊泡首先沿“标准”途径沿着形成,然后逐渐合并成复合或多层亚囊泡,最后组织成大复合或多层囊泡。结果表明,使用双组分共聚物生成具有复杂结构的稳定聚集体的可能性,并提出了一个通用的和有前途的路线,以获得先进的纳米结构材料。
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.
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