钝化
纳米晶
X射线光电子能谱
胶体
油酸
化学工程
纳米技术
纳米颗粒
羟基化
材料科学
化学
物理化学
有机化学
图层(电子)
生物化学
工程类
酶
作者
Danylo Zherebetskyy,Marcus Scheele,Yingjie Zhang,Noah D. Bronstein,Christopher Thompson,David K. Britt,Miquel Salmerón,Paul S. Weiss,Lin‐Wang Wang
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2014-05-30
卷期号:344 (6190): 1380-1384
被引量:425
标识
DOI:10.1126/science.1252727
摘要
Nanoparticle lattices and surfaces The challenge of resolving the details of the surfaces or assemblies of colloidal semiconductor nanoparticles can be overcome if several characterization methods are used (see the Perspective by Boles and Talapin). Boneschanscher et al. examined honeycomb superlattices of lead selenide nanocrystals formed by the bonding of crystal faces using several methods, including high-resolution electron microscopy and tomography. The structure had octahedral symmetry with the nanocrystals distorted through “necking”: the expansion of the contact points between the nanocrystals. Zherebetskyy et al. used a combination of theoretical calculations and spectroscopic methods to study the surface layer of lead sulfide nanocrystals synthesized in water. In addition to the oleic acid groups that capped the nanocrystals, hydroxyl groups were present as well. Science , this issue p. 1377 , p. 1380 ; see also p. 1340
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