Template-free nanostructured particle growth via a one-pot continuous gradient nanoprecipitation,Aggregate

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Template-free nanostructured particle growth via a one-pot continuous gradient nanoprecipitation
Aggregate ( IF 13.9 ) Pub Date : 2023-09-19 , DOI: 10.1002/agt2.427
Xie Cheng ₁ , Shuai Wang ₂ , Julien Bernard ₃ , François Ganachaud ₃ , Xibo Yan ₁

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Engineered nanoparticles have emerged as new types of materials for a wide range of applications from therapeutics to energy. Still, fabricating nanomaterials presenting complex inner morphologies and shapes in a simple manner remains a great challenge. Herein, we report the template-free one-pot continuous gradient nanoprecipitation of different types of non-compatible polymers to spontaneously form nanostructured particles. The continuous addition of antisolvent induces precipitation and (re)organization of polymer chains at the forming particle interface, ultimately and naturally developing complex inner morphologies and shapes while particle grows. This low-energy-cost bottom-up assembly approach applies to various functional polymers, possibly embedded with metal nanoparticles, for continuous growth into well-organized nanoparticles. UV crosslinking of the particles and core removal allows both confirming the building process and leading to hollow or multivoid nanomaterials.

中文翻译：

通过一锅连续梯度纳米沉淀法实现无模板纳米结构颗粒生长

工程纳米颗粒已成为新型材料，具有从治疗到能源的广泛应用。尽管如此，以简单的方式制造呈现复杂内部形态和形状的纳米材料仍然是一个巨大的挑战。在此，我们报告了不同类型的不相容聚合物的无模板一锅连续梯度纳米沉淀，以自发形成纳米结构颗粒。反溶剂的连续添加导致形成颗粒界面处聚合物链的沉淀和（重新）组织，最终在颗粒生长时自然地形成复杂的内部形态和形状。这种低能源成本的自下而上组装方法适用于各种功能聚合物，可能嵌入金属纳米颗粒，以连续生长成组织良好的纳米颗粒。颗粒的紫外线交联和核去除既可以确认构建过程，又可以产生空心或多空隙纳米材料。

更新日期：2023-09-19

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