Wang Bingbing, Li Bing, Ferrier Robert C M, Li Christopher Y
Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, USA.
Macromol Rapid Commun. 2010 Jan 18;31(2):169-75. doi: 10.1002/marc.200900735. Epub 2009 Dec 23.
Top-selective surface modification has been widely used for the synthesis of Janus nanoparticles (NPs). Herein we demonstrate that polymer single crystals can serve as generic substrates to immobilize NPs and the resultant NPs are Janus in nature. This technique is generic because various NPs as well as polymer single crystal substrates can be used. Single crystals of poly(ethylene oxide), polycaprolactone, and polyethylene-block-poly(ethylene oxide) have been successfully used to immobilize gold, magnetic, and semiconducting NPs. Subsequent dissolution of the single crystals led to various types of Janus NPs and NP clusters with different polymer brushes.
顶级选择性表面修饰已被广泛用于合成Janus纳米颗粒（NPs）。在此，我们证明聚合物单晶可用作固定纳米颗粒的通用基底，并且所得的纳米颗粒本质上是Janus型的。该技术具有通用性，因为可以使用各种纳米颗粒以及聚合物单晶基底。聚环氧乙烷、聚己内酯和聚乙烯-嵌段-聚环氧乙烷的单晶已成功用于固定金、磁性和半导体纳米颗粒。随后单晶的溶解产生了具有不同聚合物刷的各种类型的Janus纳米颗粒和纳米颗粒簇。
