Polymer stereocomplexation as a scalable platform for nanoparticle assembly,Journal of the American Chemical Society

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Polymer stereocomplexation as a scalable platform for nanoparticle assembly
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-01-07 , DOI: 10.1021/jacs.9b10156
Allison Abdilla , Neil D Dolinski , Puck de Roos , Jing Ming Ren , Erika van der Woude , Soyoung E Seo , Manuel S Zayas , Jimmy Lawrence ₁ , Javier Read de Alaniz , Craig J Hawker

Affiliation

DNA-mediated assembly of inorganic particles has been demonstrated to be a powerful approach for preparing nanomaterials with a range of useful optical and electrical properties. Building on this inspiration, we describe a generalizable gram-scale method to assemble nanoparticles through the formation of poly(methyl methacrylate) (PMMA) triple-helices. In this work, alkene terminated syndiotactic (st-) and isotactic (it-) PMMA polymers were prepared and subsequently functionalized to afford nanoparticle ligands. Nanoparticles with complementary st- and it-PMMA ligands could then be spontaneously assembled up-on mixing at room temperature. This process was robust and fully reversible through multiple heating and cooling cycles. The versatility of PMMA stereocomplexation was highlighted by assembling hybrid structures composed of nanoparticles of different compositions (e.g., Au and quantum dots) and shapes (e.g., spheres and rods). These initial demonstrations of nanoparticle self-assembly from inexpensive PMMA-based materials present an attractive alternative to DNA-based nanomaterials.

中文翻译：

聚合物立体络合作为纳米粒子组装的可扩展平台

DNA 介导的无机颗粒组装已被证明是制备具有一系列有用的光学和电学特性的纳米材料的有效方法。基于这一灵感，我们描述了一种通用的克级方法，通过形成聚（甲基丙烯酸甲酯）（PMMA）三螺旋来组装纳米颗粒。在这项工作中，制备了烯烃封端的间规 (st-) 和等规 (it-) PMMA 聚合物，并随后进行了功能化以提供纳米颗粒配体。具有互补的 st- 和 it-PMMA 配体的纳米颗粒可以在室温下自发混合。通过多次加热和冷却循环，该过程是稳健且完全可逆的。通过组装由不同成分（例如金和量子点）和形状（例如球和棒）的纳米粒子组成的混合结构，突出了 PMMA 立体络合的多功能性。这些从廉价的基于 PMMA 的材料中进行纳米粒子自组装的初步演示，为基于 DNA 的纳米材料提供了一种有吸引力的替代方案。

更新日期：2020-01-07

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