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Physics, chemistry and biology of Soft Matter
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Paper
J. Mater. Chem., 2007, 17, 52 - 55, DOI: 10.1039/b613887j
DNA-mediated assembly of iron platinum (FePt) nanoparticles
Sudhanshu Srivastava, Bappaditya Samanta, Palaniappan Arumugam, Gang Han and Vincent M. Rotello
Nanocomposite materials consisting of FePt nanoparticles and DNA were constructed via DNA-mediated
bricks and mortar
self-assembly. Electrostatic interaction between the cationic nanoparticles and the DNA through surface recognition led to the formation of extended composite aggregates. These DNA-assembled aggregates feature increased interparticle spacing arising from the DNA mortar. The enhanced structure and increased spacing in the bio-nanocomposite assembly was found to alter the magnetic properties of the assemblies, as demonstrated by a 54 K change in blocking temperature (TB).
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