Abstract
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.
Original language | English (US) |
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Pages (from-to) | 14157-14165 |
Number of pages | 9 |
Journal | Journal of the American Chemical Society |
Volume | 126 |
Issue number | 43 |
DOIs | |
State | Published - Nov 3 2004 |
ASJC Scopus subject areas
- Catalysis
- General Chemistry
- Biochemistry
- Colloid and Surface Chemistry