Assembly and organization processes in DNA-directed colloidal crystallization

被引：128

作者：

Macfarlane, Robert J. ^{[1
,2
]}

Lee, Byeongdu ^{[3
]}

Hill, Haley D. ^{[1
,2
]}

Senesi, Andrew J. ^{[1
,2
]}

Seifert, Soenke ^{[3
]}

Mirkin, Chad A. ^{[1
,2
]}

机构：

[1] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

[2] Northwestern Univ, Int Inst Nanotechnol, Evanston, IL 60208 USA

[3] Argonne Natl Lab, Adv Photon Source, Xray Sci Div, Argonne, IL 60439 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2009年 / 106卷 / 26期

基金：

美国国家科学基金会; 美国国家卫生研究院;

关键词：

DNA materials; SAXS; self assembly; CRYSTALS; NANOPARTICLES; NANOCRYSTALS; DIFFRACTION; PROTEIN;

D O I：

10.1073/pnas.0900630106

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We present an analysis of the key steps involved in the DNA-directed assembly of nanoparticles into crystallites and polycrystalline aggregates. Additionally, the rate of crystal growth as a function of increased DNA linker length, solution temperature, and self-complementary versus non-self-complementary DNA linker strands (1- versus 2-component systems) has been studied. The data show that the crystals grow via a 3-step process: an initial "random binding'' phase resulting in disordered DNA-AuNP aggregates, followed by localized reorganization and subsequent growth of crystalline domain size, where the resulting crystals are well-ordered at all subsequent stages of growth.

引用

页码：10493 / 10498

页数：6

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