具有可调光学性质的斑驳和多区域双面粒子。

Patchy and multiregion janus particles with tunable optical properties.

机构信息

Department of Materials Science and Engineering and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.

出版信息

Nano Lett. 2010 Feb 10;10(2):603-9. doi: 10.1021/nl903636r.

DOI:10.1021/nl903636r

PMID:20063864

Abstract

Multiregion and patchy optically active Janus particles were synthesized via a hierarchical self-assembly process. Gold nanoparticles were assembled on the top surfaces of nano- and submicrometer silica particles, which were selectively protected on their bottom surfaces by covalent attachment to a copolymer film. The morphologies of the gold particle layer, and the resulting optical properties of the Janus particles, were tuned by changing the surface energy between the silica and gold particles, followed by annealing.

摘要

多区域和斑驳的手性各向异性 Janus 粒子通过分级自组装过程合成。金纳米粒子组装在纳米和亚微米二氧化硅粒子的顶表面上，其底表面通过与共聚物膜的共价附着而选择性地保护。通过改变二氧化硅和金粒子之间的表面能，然后进行退火，来调整金粒子层的形态以及 Janus 粒子的光学性质。