Colloidosome-Templated Poly (L-lactic acid) Crystalsomes
Colloidosome-Templated Poly (L-lactic acid) Crystalsomes
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DOI：
10.1016/j.giant.2022.100124
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发表时间：
2022-10
期刊：
影响因子：
7
通讯作者：
Mark C. Staub;Shichen Yu;Christopher Y. Li
中科院分区：
文献类型：
--
作者：
Mark C. Staub;Shichen Yu;Christopher Y. Li
聚合物已被用于将纳米颗粒(NP)组装成复杂的形状和形态。聚合物导向纳米粒子组装的策略通常涉及调节多组分聚合物/纳米颗粒体系的相行为。在这项工作中，我们报道了利用受限的聚合物结晶定向组装将聚合物和纳米颗粒共同组装成中空囊泡。以5 nm和20 nm Fe3O4纳米粒子为固体表面活性剂，制备了水和聚乳酸甲苯溶液的Pickering乳液。乳液滴的油/水界面模板PLLA晶体的生长，而PLLA晶体反过来将NPs固定在晶体表面，导致胶体聚合物晶体的形成。用电子显微镜和热分析技术研究了聚碳酸酯的结构、形貌和形成机理。这项工作为制备纳米级复杂的NP-聚合物偶联物提供了一条新的途径。
Polymers have been utilized to direct nanoparticle (NP) assembly into complex shapes and morphologies. Strategies for polymer-directed NP assembly often involve tuning the phase behavior of multi-component polymer/nanoparticle systems. In this work, we report the co-assembly of polymer and NPs into hollow vesicles using confined polymer crystallization-directed assembly. 5 nm and 20 nm Fe3O4NPs are used as the solid surfactants to create Pickering emulsions of water and poly(L-lactic acid) (PLLA) toluene solution. The oil/water interface of the emulsion droplets templates the growth of PLLA crystals, which in turn, immobilize NPs onto the crystal surface, leading to the formation of colloido-polymer-crystalsomes (CPCs). The structure, morphology, and formation mechanism of the CPCs are investigated using electron microscopy and thermal analysis techniques. This work provides a new approach to fabricate nanoscale complex NP-polymer conjugates.