Makromolekulare Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany.
Nanoscale. 2018 Oct 4;10(38):18257-18268. doi: 10.1039/c8nr05935g.
Block copolymer self-assembly in solution paves the way for the construction of well-defined compartmentalized nanostructures. These are excellent templates for the incorporation and stabilisation of nanoparticles (NPs), giving rise to highly relevant applications in the field of catalysis or sensing. However, the regio-selective incorporation of NPs in specific compartments is still an issue, especially concerning the loading with different NP types. Using crystallisation-driven self-assembly (CDSA), functional worm-like crystalline-core micelles (wCCMs) with a tailor-made, nanometre-sized patchy corona were prepared as versatile templates for the incorporation and stabilisation of metal and metal oxide NPs. Different strategies, like ligand exchange or co-precipitation of polymer stabilised NPs with one surface patch, were developed that allow the incorporation of NPs in specific regions of the patchy wCCM corona. Independent of the NP type and the incorporation method, the NPs showed no tendency for agglomeration and were fixed within the corona patches of the wCCMs. The binary loading of patchy micelles with metal and metal oxide NPs was realised by combining different loading strategies, yielding hybrids with homogeneously dispersed NPs guided by the patchy structure of the template.
嵌段共聚物在溶液中的自组装为构建具有明确定域的纳米结构铺平了道路。这些结构是纳米粒子（NPs）掺入和稳定的极好模板，在催化或传感领域具有重要的应用。然而，将 NPs 有选择地掺入特定的隔室中仍然是一个问题，特别是涉及到负载不同类型的 NP 时。使用结晶驱动自组装（CDSA），制备了具有定制的纳米级有斑点的冠层的功能型蠕虫状晶核胶束（wCCMs）作为掺入和稳定金属和金属氧化物 NPs 的多功能模板。开发了不同的策略，如配体交换或聚合物稳定的 NPs 与一个表面斑点的共沉淀，允许将 NPs 掺入有斑点的 wCCM 冠层的特定区域。与 NP 类型和掺入方法无关，NP 没有团聚的趋势，并固定在 wCCM 冠层斑点内。通过结合不同的负载策略，实现了具有金属和金属氧化物 NPs 的嵌段共聚物的二元负载，生成了由模板的斑点结构引导的具有均匀分散 NPs 的混合物。
