Three-dimensional controlled growth of monodisperse sub-50 nm heterogeneous nanocrystals

Deming Liu, Xiaoxue Xu, Yi Du, Xian Qin, Yuhai Zhang, Chenshuo Ma, Shihui Wen, Wei Ren, Ewa M. Goldys, James A. Piper, Shixue Dou, Xiaogang Liu, Dayong Jin*

*Corresponding author for this work

Research output: Contribution to journalArticle

156 Citations (Scopus)
17 Downloads (Pure)

Abstract

The ultimate frontier in nanomaterials engineering is to realize their composition control with atomic scale precision to enable fabrication of nanoparticles with desirable size, shape and surface properties. Such control becomes even more useful when growing hybrid nanocrystals designed to integrate multiple functionalities. Here we report achieving such degree of control in a family of rare-earth-doped nanomaterials. We experimentally verify the co-existence and different roles of oleate anions (OA -) and molecules (OAH) in the crystal formation. We identify that the control over the ratio of OA - to OAH can be used to directionally inhibit, promote or etch the crystallographic facets of the nanoparticles. This control enables selective grafting of shells with complex morphologies grown over nanocrystal cores, thus allowing the fabrication of a diverse library of monodisperse sub-50 nm nanoparticles. With such programmable additive and subtractive engineering a variety of three-dimensional shapes can be implemented using a bottom-up scalable approach.

Original languageEnglish
Article number10254
Pages (from-to)1-8
Number of pages8
JournalNature Communications
Volume7
DOIs
Publication statusPublished - 8 Jan 2016

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