氢键辅助自组装：轻松制备单分散空心纳米粒子。

Hydrogen-bonding-assisted self-assembly: monodisperse hollow nanoparticles made easy.

作者信息

Sun Zaicheng, Bai Feng, Wu Huimeng, Schmitt Samantha K, Boye Daniel M, Fan Hongyou

机构信息

NSF Center for Micro-Engineered Materials, Chemical and Nuclear Engineering Department, The University of New Mexico, Albuquerque, New Mexico 87131, USA.

出版信息

J Am Chem Soc. 2009 Sep 30;131(38):13594-5. doi: 10.1021/ja905240w.

DOI:10.1021/ja905240w

PMID:19722519

Abstract

A facile self-assembly process for synthesizing monodisperse hollow spherical nanoparticles that are less than 50 nm in diameter has been developed. Preferential hydrogen bonding between an amphiphilic block copolymer (polystyrene-b-polyvinylpyridine, PS-PVP) and a hydrogen-bonding agent (HA) enables formation of monodisperse spherical solid polymer nanoparticles with the HA residing in the particle core surrounded by the polymer. Removal of the HA results in monodisperse hollow nanoparticles with tunable hollow cavity size and internal surface reactivity. Formation of ordered hollow nanoparticle films with controlled index of refraction for antireflective coating applications is demonstrated.

摘要

已开发出一种简便的自组装方法来合成直径小于50 nm的单分散空心球形纳米颗粒。两亲性嵌段共聚物（聚苯乙烯-b-聚乙烯基吡啶，PS-PVP）与氢键试剂（HA）之间的优先氢键作用能够形成单分散球形固体聚合物纳米颗粒，其中HA位于由聚合物包围的颗粒核心中。去除HA后可得到具有可调中空腔尺寸和内表面反应性的单分散空心纳米颗粒。展示了用于抗反射涂层应用的具有可控折射率的有序空心纳米颗粒薄膜的形成。