Controlled Symmetry Breaking in Colloidal Crystal Engineering with DNA

Laramy, Christine R.; Lopez-Rios, Hector; O’Brien, Matthew N.; Girard, Martin; Stawicki, Robert J.; Lee, Byeongdu; Cruz, Mónica Olvera de la; Mirkin, Chad A.

doi:10.1021/acsnano.8b07027

Cited by 19 publications

(15 citation statements)

References 70 publications

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“…The diffraction spot at a spacing of 1.44 Å is associated with the (022) facet and the observed spacing d at 2.35 Å could be belonged to the (111) diffraction spot. , Simultaneously, two major peaks appear in the UV–vis spectrum of the elongated rhombic dodecahedron solution (Figure E). Both two plasmon bands are located in the visible region (∼560 and ∼633 nm), which are related to the transverse and longitudinal resonances, respectively. , The absorption characteristics are also reflected in the bluish red color of the colloid, as displayed in the inset picture of Figure E.…”

Section: Results and Discussionmentioning

confidence: 93%

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Tetragonal Superlattice of Elongated Rhombic Dodecahedra for Sensitive SERS Determination of Pesticide Residues in Fruit

Lin

Fang

et al. 2020

ACS Appl. Mater. Interfaces

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The self-assembly of plasmonic nanoparticles into highly ordered superlattices could pave the way toward novel nanomaterials for surface-enhanced Raman scattering (SERS). Here, we propose the formation of large-area superlattices of elongated rhombic dodecahedra in a vertical orientation via a controlled droplet evaporation process. Expectedly, the constant humidity of the experimental condition could control the evaporation speed of droplets and this procedure promotes the balance between driven depletion attraction and electrostatic repulsion in the system, leading to the generation of well-organized three-dimensional (3D) superlattices. The unique geometry of elongated rhombic dodecahedra could establish the tetragonal superlattices, which breaks the conventional hexagonal symmetry of gold nanorods. Specifically, the influence of the type and concentration of surfactants, the concentration of nanoparticles, and the amount of droplets on the preparation results were systematically investigated to find the optimal assembly parameters. Remarkably, such close-packed tetragonal arrays of vertically aligned elongated rhombic dodecahedra exhibit more excellent SERS performance compared with the traditional hexagonal superstructure of gold nanorods. Benefiting from the high sensitivity and reproducibility of elongated rhombic dodecahedron superlattices, their applications in the determination of pesticide residues in apple and grape peels were successfully demonstrated. As a result, this study may advance the production of innovative plasmonic nanomaterials for a broad range of fields.

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Section: Results and Discussionmentioning

confidence: 93%

“…Both two plasmon bands are located in the visible region (∼560 and ∼633 nm), which are related to the transverse and longitudinal resonances, respectively. 35,36 The absorption characteristics are also reflected in the bluish red color of the colloid, as displayed in the inset picture of Figure 1E.…”

Section: ■ Results and Discussionmentioning

confidence: 95%

Tetragonal Superlattice of Elongated Rhombic Dodecahedra for Sensitive SERS Determination of Pesticide Residues in Fruit

Lin

Fang

et al. 2020

ACS Appl. Mater. Interfaces

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“…While most studies have focused on spherical seeds, some anisotropic seeds have been used to prepare a variety of structures. For example, rod-shaped seeds have been used to generate elongated rhombic dodecahedral gold NCs (22). Moreover, rhombic dodecahedral gold seeds have been used as cores for the synthesis of Au-Ag core-shell NCs with cubic, cuboctahedral, and octahedral structures (23).…”

Section: Introductionmentioning

confidence: 99%

Corner-, edge-, and facet-controlled growth of nanocrystals

et al. 2021

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The ability to precisely control nanocrystal (NC) shape and composition is useful in many fields, including catalysis and plasmonics. Seed-mediated strategies have proven effective for preparing a wide variety of structures, but a poor understanding of how to selectively grow corners, edges, and facets has limited the development of a general strategy to control structure evolution. Here, we report a universal synthetic strategy for directing the site-specific growth of anisotropic seeds to prepare a library of designer nanostructures. This strategy leverages nucleation energy barrier profiles and the chemical potential of the growth solution to control the site-specific growth of NCs into exotic shapes and compositions. This strategy can be used to not only control where growth occurs on anisotropic seeds but also control the exposed facets of the newly grown regions. NCs of many shapes are synthesized, including over 10 here-to-fore never reported NCs and, in principle, many others are possible.

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“…The fabrication of highly customizable 3D DNA-based architectures for the precise organization of nanoscale materials was originally conceptualized by Seeman in 1982 1 . A variety of methodologies that allow for programmable self-assembly have been developed, including the attachment of DNA linkers to the nanoparticle (NP) surfaces 2 , 3 for the construction of 3D lattices with user-defined colloidal NP crystal configurations 4 – 8 . With the advent of DNA origami 9 , 3D superlattices of nanoparticle cluster shapes have been described 10 , 11 along with 3D origami lattices displaying customizable geometry to host guest species 12 .…”

Section: Introductionmentioning

confidence: 99%

The influence of Holliday junction sequence and dynamics on DNA crystal self-assembly

et al. 2022

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The programmable synthesis of rationally engineered crystal architectures for the precise arrangement of molecular species is a foundational goal in nanotechnology, and DNA has become one of the most prominent molecules for the construction of these materials. In particular, branched DNA junctions have been used as the central building block for the assembly of 3D lattices. Here, crystallography is used to probe the effect of all 36 immobile Holliday junction sequences on self-assembling DNA crystals. Contrary to the established paradigm in the field, most junctions yield crystals, with some enhancing the resolution or resulting in unique crystal symmetries. Unexpectedly, even the sequence adjacent to the junction has a significant effect on the crystal assemblies. Six of the immobile junction sequences are completely resistant to crystallization and thus deemed “fatal,” and molecular dynamics simulations reveal that these junctions invariably lack two discrete ion binding sites that are pivotal for crystal formation. The structures and dynamics detailed here could be used to inform future designs of both crystals and DNA nanostructures more broadly, and have potential implications for the molecular engineering of applied nanoelectronics, nanophotonics, and catalysis within the crystalline context.

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Controlled Symmetry Breaking in Colloidal Crystal Engineering with DNA

Cited by 19 publications

References 70 publications

Tetragonal Superlattice of Elongated Rhombic Dodecahedra for Sensitive SERS Determination of Pesticide Residues in Fruit

Tetragonal Superlattice of Elongated Rhombic Dodecahedra for Sensitive SERS Determination of Pesticide Residues in Fruit

Corner-, edge-, and facet-controlled growth of nanocrystals

The influence of Holliday junction sequence and dynamics on DNA crystal self-assembly

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