2015
DOI: 10.1038/nmat4296
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Selective transformations between nanoparticle superlattices via the reprogramming of DNA-mediated interactions

Abstract: The rapid development of self-assembly approaches has enabled the creation of materials with desired organization of nanoscale components. However, achieving dynamic control, wherein the system can be transformed on demand into multiple entirely different states, is typically absent in atomic and molecular systems and has remained elusive in designed nanoparticle systems. Here, we demonstrate with in situ small-angle X-ray scattering that, by using DNA strands as inputs, the structure of a three-dimensional la… Show more

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Cited by 135 publications
(131 citation statements)
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“…It is thus clear that mixtures of different nanoparticle shapes can trigger the formation of crystal shapes with increased complexity. With the objective of creating crystalline systems that can be globally switched between multiple states, a slightly different approach has made use of the linker stoichiometry to intentionally connect only a fraction of the available DNA molecules on the nanoparticles 11 . The addition of further complementary 'blender' DNA linkers allows to slowly push the crystal to transform isothermally at 28 °C from a body-centred cubic (bcc) to a face-centred cubic (fcc) lattice (Fig.…”
Section: Dna-nanoparticle Superlatticesmentioning
confidence: 99%
See 1 more Smart Citation
“…It is thus clear that mixtures of different nanoparticle shapes can trigger the formation of crystal shapes with increased complexity. With the objective of creating crystalline systems that can be globally switched between multiple states, a slightly different approach has made use of the linker stoichiometry to intentionally connect only a fraction of the available DNA molecules on the nanoparticles 11 . The addition of further complementary 'blender' DNA linkers allows to slowly push the crystal to transform isothermally at 28 °C from a body-centred cubic (bcc) to a face-centred cubic (fcc) lattice (Fig.…”
Section: Dna-nanoparticle Superlatticesmentioning
confidence: 99%
“…For metals, the difference in favour of fcc structures is generally very small. Yet in the DNA-nanoparticle system, the addition of 'staple' strands (sequences directly connecting the nanoparticles) rather than two 'blending' strands (two types of sequence, each binding with one end to the nanoparticles and with the other to the other type of blending strand) transformed the bcc structure isothermally at 28 °C to an hcp lattice; however, at higher temperature (34 °C) the staples induced the generally favourable fcc phase 11 .…”
Section: Dna-nanoparticle Superlatticesmentioning
confidence: 99%
“…With this combination of specificity and reversibility, it is possible to design many singlecomponent and two-component systems that assemble into equilibrium crystals and clusters. [4][5][6][7][8][9][10][11][12][13][14] However, these interactions are limited in one significant way: the binding strength decreases steeply and monotonically with in- The bottom images show how we schematically depict the bridges that bind the particles together. In these schematics, a zoomed-in portion of each particle is shown in gray, and the strands are not drawn to scale.…”
Section: Introductionmentioning
confidence: 99%
“…This has been demonstrated by Gang and colleagues, who report 11 the design of different types of 'input' DNA strands that can be used to switch the structure of a 'mother' crystal into a selected number of 'daughter' crystalline structures. In a nutshell, owing to the reversibility of the DNA bonds, such input strands shift the attractive and/or repulsive interactions between the nanoparticles to those corresponding to a different crystal structure.…”
mentioning
confidence: 99%