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. 2014 Nov 12;26(42):7235-40.
doi: 10.1002/adma.201402548. Epub 2014 Sep 22.

Oligonucleotide flexibility dictates crystal quality in DNA-programmable nanoparticle superlattices

Andrew J Senesi  1 , Daniel J Eichelsdoerfer, Keith A Brown, Byeongdu Lee, Evelyn Auyeung, Chung Hang J Choi, Robert J Macfarlane, Kaylie L Young, Chad A Mirkin
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Oligonucleotide flexibility dictates crystal quality in DNA-programmable nanoparticle superlattices

Andrew J Senesi et al. Adv Mater. .

Abstract

The evolution of crystallite size and microstrain in DNA-mediated nanoparticle superlattices is dictated by annealing temperature and the flexibility of the interparticle bonds. This work addresses a major challenge in synthesizing optical metamaterials based upon noble metal nanoparticles by enabling the crystallization of large nanoparticles (100 nm diameter) at high volume fractions (34% metal).

Keywords: DNA; X-ray scattering; ligand flexibility; metamaterials; superlattices.

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