有序条纹状纳米颗粒形成的尺寸限制。

Size limitations for the formation of ordered striped nanoparticles.

作者信息

Carney Randy P, DeVries Gretchen A, Dubois Cedric, Kim Hyewon, Kim Jin Young, Singh Chetana, Ghorai Pradip K, Tracy Joseph B, Stiles Rebecca L, Murray Royce W, Glotzer Sharon C, Stellacci Francesco

机构信息

Department of Materials Science & Engineering, MIT, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.

出版信息

J Am Chem Soc. 2008 Jan 23;130(3):798-9. doi: 10.1021/ja077383m. Epub 2007 Dec 23.

DOI:10.1021/ja077383m

PMID:18154337

Abstract

A combination of immiscible molecules in the ligand shell of a gold nanoparticle (NP) has been shown to phase separate into a rippled structure; this phase separation can be used to direct the assembly of the NPs into chains. Here we demonstrate that only NPs within a certain size range can form chains, and we conclude that the rippled morphology of the ligand shell also exists only within that given size range. We corroborate this result with simulations of the ligand arrangement on NPs of various sizes.

摘要

已证明，金纳米颗粒（NP）配体壳层中互不相溶的分子组合会相分离成波纹状结构；这种相分离可用于引导纳米颗粒组装成链。在这里，我们证明只有特定尺寸范围内的纳米颗粒才能形成链，并且我们得出结论，配体壳层的波纹形态也仅存在于该给定尺寸范围内。我们通过对各种尺寸纳米颗粒上配体排列的模拟证实了这一结果。