Photo-Induced Programmable Morphological Transition of the Hybrid Coassembles
Photo-Induced Programmable Morphological Transition of the Hybrid Coassembles
复制标题
混合组合体的光诱导可编程形态转变
DOI：
10.1002/macp.201800054
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发表时间：
2018
影响因子：
2.5
通讯作者：
Jiang Xuesong
中科院分区：
文献类型：
--
作者：
Li Jin;Su Zhilong;Xu Hongjie;Ma Xiaodong;Yin Jie;Jiang Xuesong
纳米粒子的形貌和分布是影响杂化组装的关键因素。介绍了一种新颖的紫外光动态控制核壳杂化微球形貌的方法。本文所用的CSM是以偶氮苯（AZO）封端的超支化聚醚胺为壳，含AZO的多面体低聚物倍半硅氧烷为核，通过共组装制备的。在紫外光照射下，AZO的协同效应和光热效应实现了从核壳微球到囊泡的动态形态转变，使组装体的尺寸从1.2 μ m增大到2.5 μm。利用紫外光的开/关的简单控制，可以将多功能的多泡结构固定并捕获为中间态。这种可编程的形态转变为在软纳米技术中制造具有理想结构的光控混合材料提供了新的见解，该材料与原位可调功能，受控释放等要求相匹配。
Morphology and nanoparticle's distribution are both key factors to the hybrid coassemblies. A fancy method to dynamically control the morphology of hybrid core–shell microspheres (CSMs) with UV light is introduced. The CSMs used here are fabricated with azobenzene (AZO) ended hyperbranched poly(ether amine) in the shell and AZO containing polyhedral oligomer silsesquioxane in the core through coassembly. Upon UV irradiation, the dynamic morphology transition from core–shell microsphere to vesicle is realized by synergistic effects and photothermal effects of AZO, resulting in the size of coassemblies increasing from 1.2 to 2.5 µm. And versatile multivesicular structures can be fixed and captured as mid‐states in taking advantage of the easy control of ON/OFF of UV light. This programmable morphology transition provides a new insight for fabricating light‐controlled hybrid materials with ideal structure in soft nanotechnology which matches with requirements in in situ tunable functions, controlled release, and so on.