文献类型：期刊文献

英文题名：Light-induced reversible self-assembly of multi-compartment patchy micelles

作者：Sun, Yao[1];Xu, Binbin[1];Tao, Xinfeng[1];Li, Xinxin[1];Lin, Shaoliang[1]

机构：[1]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Mat Sci & Engn,Minist Educ, Shanghai Key Lab Adv Polymer Mat,Key Lab Ultrafin, Shanghai, Peoples R China

年份：2022

卷号：6

期号：7

起止页码：908

外文期刊名：MATERIALS CHEMISTRY FRONTIERS

收录：;EI(收录号：20221311858521);WOS:【SCI-EXPANDED(收录号:WOS:000765484400001)】；

基金：This work was supported by the National Natural Science Foundation of China (52073092 and 51873061). Support from Shanghai Scientific and Technological Innovation Projects (19JC1411700) is also appreciated. This work was sponsored by "Chenguang Program" (18CG32) supported by the Shanghai Education Development Foundation and Shanghai Municipal Education Commission.

语种：英文

外文关键词：Irradiation - Block copolymers - Self assembly - Azobenzene - Light

摘要：Block copolymers represent an important class of nanomaterials that self-assemble into various hierarchical nanostructures with well-defined shapes and intriguing properties. However, effective and non-invasive routes to render reversible hierarchical self-assembly (RHSA) of block copolymers are relatively rare and limited, particularly in multicompartment patchy micelles. Moreover, there remains a great challenge to achieve multiple assembly structures from the same polymeric building block. Herein, we report a convenient strategy for light-induced RHSA of a light-responsive azobenzene-moiety-containing diblock copolymer, into an exciting variety of hierarchical self-assemblies. Programming the reversible assembly of patchy micelles into hierarchically complex structures is delicately constructed via a two-step, selective solvent-mediated self-assembly, that is, reversing micelles and swelling into subunits, followed by forming multi-compartment patchy micelles in mixed organic solvent/H2O. More intriguingly, an array of multi-compartment patchy micelles of different shapes could be disassembled into subunits upon UV irradiation and then reversibly reassembled upon exposure to 450 nm visible light as a result of the trans-cis isomerization of azobenzene moieties. This work not only offers an effective approach to creating various multicompartment patchy micelles with the same diblock polymer, but also provides new insights into reversible self-assembly driven by specific wavelength light.