文章基本信息

标题：Assembly and organization processes in DNA-directed colloidal crystallization
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作者：Robert J. Macfarlane ; Byeongdu Lee ; Haley D. Hill 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：2009
卷号：106
期号：26
页码：10493-10498
DOI：10.1073/pnas.0900630106
语种：English
出版社：The National Academy of Sciences of the United States of America
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.
关键词：DNA materials ; SAXS ; self assembly