期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 126, 期 43, 页码 14157-14165出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja046718m
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Complexes of anionic DNA and cationic liposomes self-assemble into a multilamellar structure where two-dimensional lipid sheets confine a periodic one-dimensional lattice of parallel DNA chains, between which Cd2+ ions can condense, and be subsequently reacted with H2S to form CdS nanorods. In this work, we identify the synergistic roles of the anionic and cationic components within the DNA-membrane template; DNA is highly anionic and condenses the Cd2+ ions, while the cationic membrane modulates the concentration of condensed Cd2+ ions to control the final CdS nanorod dimensions. Due to the strong electrostatic interactions between the DNA sugar-phosphate backbone and the Cd2+ ions, crystallographic control of CdS nanostructures is possible using these simple DNA-membrane templates, which we demonstrate using nanobeam electron diffraction experiments on individual templated CdS nanorods.
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