Construction of Evolutionary Tree for Morphological Engineering of Nanoparticles

详细信息    查看全文

• 作者：Kwonnam Sohn ; Franklin Kim ; Ken C. Pradel ; Jinsong Wu ; Yong Peng ; Feimeng Zhou ; Jiaxing Huang
• 刊名：ACS Nano
• 出版年：2009
• 出版时间：August 25, 2009
• 年：2009
• 卷：3
• 期：8
• 页码：2191-2198
• 全文大小：628K
• 年卷期：0
• ISSN：1936-086X

文摘

In addition to chemical composition, the chemistry of nanocrystals involves an extra structural factor—morphology—since many of their properties are size- and shape-dependent. Although often described as artificial atoms or molecules, the morphological control of nanoparticles has not advanced to a level comparable to organic total synthesis, where complex molecular structures can be rationally designed and prepared through stepwise reactions. Here we report a morphological engineering approach for gold nanoparticles by constructing an evolutionary tree consisting of a few branches of independent growth pathways. Each branch yields a string of evolving, continuously tunable morphologies from one reaction, therefore collectively producing a library of nanoparticles with minimal changes of reaction parameters. In addition, the tree also provides ground rules for designing new morphologies through crossing over different pathways.