Asymmetric Incorporation of Silver Nanoparticles in Polymeric Assemblies by Coassembly of Tadpole-Like Nanoparticles and Amphiphilic Block Copolymers,Macromolecular Rapid Communications

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Asymmetric Incorporation of Silver Nanoparticles in Polymeric Assemblies by Coassembly of Tadpole-Like Nanoparticles and Amphiphilic Block Copolymers
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2021-08-25 , DOI: 10.1002/marc.202100354
Haohui Huo ₁ , Zepeng Li ₁ , Tianyi Tan ₁ , Long Chen ₁ , Goran Ungar ₁ , Richard Hoogenboom ₂ , Qilu Zhang ₁ , Feng Liu ₁

Affiliation

A general approach to asymmetrically localize nanoparticles (NPs) in larger polymeric nanostructures is demonstrated by coassembly of tadpole-like silver NPs (AgNPs) and amphiphilic block copolymers (BCPs). The tadpole-like AgNPs are prepared by template synthesis using a tailor-made A(BC)₂₀ star polymer, namely poly(ethylene glycol)[poly(acrylic acid)-block-polystyrene]₂₀ [PEG(PAA-b-PS)₂₀], as template resulting in AgNPs decorated with twenty short PS chains and one long PEG chain, named Ag@PEG(PS)₂₀. The asymmetric distribution of these AgNPs in various polymeric nanostructures, e.g., spherical micelles, cylindrical micelles, vesicles, and sponge phase, is achieved via coassembly of the as-prepared Ag@PEG(PS)₂₀ and PEG-b-PS in solution driven by the anisotropic nature of the Ag@PEG(PS)₂₀. This report not only provides a new strategy for the fabrication of tadpole-like NPs but also offers opportunity for off-center distributing NPs in hybrid assemblies, which may find applications in, e.g., sensing, catalysis, and diagnostics.

中文翻译：

通过类似蝌蚪的纳米粒子和两亲嵌段共聚物的共组装，将银纳米粒子不对称地掺入聚合物组件中

蝌蚪状银纳米颗粒 (AgNPs) 和两亲性嵌段共聚物 (BCP) 的共组装证明了在较大的聚合物纳米结构中不对称定位纳米颗粒 (NPs) 的一般方法。蝌蚪状 AgNPs 是通过模板合成使用特制的 A(BC) ₂₀星形聚合物制备的，即聚（乙二醇）[聚（丙烯酸）-嵌段-聚苯乙烯] ₂₀ [PEG(PAA- b -PS) ₂₀ ]，作为模板产生的 AgNPs 装饰有 20 条短 PS 链和一条长 PEG 链，命名为 Ag@PEG(PS) ₂₀. 这些 AgNPs 在各种聚合物纳米结构（例如球形胶束、圆柱形胶束、囊泡和海绵相）中的不对称分布是通过在溶液驱动下将制备的 Ag@PEG(PS) ₂₀和 PEG- b - PS 共组装实现的由于 Ag@PEG(PS) ₂₀的各向异性性质。该报告不仅为制造蝌蚪状 NPs 提供了一种新策略，而且还提供了在混合组件中偏心分布 NPs 的机会，这可能会在例如传感、催化和诊断中找到应用。

更新日期：2021-10-22

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