Directed assembly of particles using directional DNA interactions

Porter, Christopher L.; Crocker, John C.

doi:10.1016/j.cocis.2017.04.005

Cited by 30 publications

(17 citation statements)

References 105 publications

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“…Such DNA nanotechnology that combines DNA origami technology and colloidal science provides a rapid and robust platform for synthesizing more complex 3D nanoarchitectures and directing the self-assembly of DNA-based chiral plasmonic nanostructures into advanced hierarchical functional materials with unprecedented photonic properties. [495][496][497] It should be noted that DNA condensed phases have been also Figure 19. a) Schematic illustration of cholesteric superstructure and polarized optical microscopy images of cholesteric LCs based on lh-6h, s-6h, rh-6h, and 2x-lh-6h DNA filaments.…”

Section: Dna Liquid Crystalsmentioning

confidence: 99%

“…In addition, the elastic properties of these twisted ribbons were found to be closely related to their chiral structures. Such DNA nanotechnology that combines DNA origami technology and colloidal science provides a rapid and robust platform for synthesizing more complex 3D nanoarchitectures and directing the self‐assembly of DNA‐based chiral plasmonic nanostructures into advanced hierarchical functional materials with unprecedented photonic properties . It should be noted that DNA condensed phases have been also used to template mesostructured assemblies for fabricating diverse inorganic hybrid mesoporous nanomaterials .…”

Section: Chirality In Lyotropic Liquid Crystalsmentioning

confidence: 99%

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Nature‐Inspired Emerging Chiral Liquid Crystal Nanostructures: From Molecular Self‐Assembly to DNA Mesophase and Nanocolloids

2018

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Liquid crystals (LCs) are omnipresent in living matter, whose chirality is an elegant and distinct feature in certain plant tissues, the cuticles of crabs, beetles, arthropods, and beyond. Taking inspiration from nature, researchers have recently devoted extensive efforts toward developing chiral liquid crystalline materials with self-organized nanostructures and exploring their potential applications in diverse fields ranging from dynamic photonics to energy and safety issues. In this review, an account on the state of the art of emerging chiral liquid crystalline nanostructured materials and their technological applications is provided. First, an overview on the significance of chiral liquid crystalline architectures in various living systems is given. Then, the recent significant progress in different chiral liquid crystalline systems including thermotropic LCs (cholesteric LCs, cubic blue phases, achiral bent-core LCs, etc.) and lyotropic LCs (DNA LCs, nanocellulose LCs, and graphene oxide LCs) is showcased. The review concludes with a perspective on the future scope, opportunities, and challenges in these truly advanced functional soft materials and their promising applications.

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Section: Dna Liquid Crystalsmentioning

confidence: 99%

Section: Chirality In Lyotropic Liquid Crystalsmentioning

confidence: 99%

Nature‐Inspired Emerging Chiral Liquid Crystal Nanostructures: From Molecular Self‐Assembly to DNA Mesophase and Nanocolloids

2018

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“…Over the past two decades, DNA-mediated interactions between colloidal particles have received a great deal of attention in both fundamental and applied aspects. [1][2][3] We reported a unique dispersion behavior of nanoparticles densely covered with oligo-DNA strands (ssDNA-NP) in aqueous medium with a high salt concentration; the ssDNA-NP in their dispersion behavior in a medium with a high salt concentration, similar to the nanometer-sized ssDNA-NP. To this end, we first developed a method for densely immobilizing oligo-DNA strands on the surface of commercial carboxylate polystyrene latex (PS) particles of various sizes.…”

Section: Introductionmentioning

confidence: 99%

DNA Terminal-Specific Dispersion Behavior of Polystyrene Latex Microparticles Densely Covered with Oligo-DNA Strands Under High-Salt Conditions

2020

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We prepared microspheres densely covered with oligo-DNA strands by immobilizing amino-terminated oligo-DNA strands on the surface of carboxylate polystyrene latex (PS) particles via the amide bond formation. The obtained microspheres (ssDNA-PS) stably dispersed in neutral pH buffer containing high concentrations of NaCl. For the ssDNA-PS ≥1 m diameter, only 3%-5% of surface-immobilized oligo-DNA could form a duplex with the complementary strands. Nevertheless, the resulting ssDNA-PS showed a distinct duplex terminal dependency in their dispersion behavior under neutral pH and high NaCl conditions; the microspheres with fully-matched duplexes on the surface spontaneously aggregated in a non-crosslinking manner. By contrast, the microspheres with terminal-mismatched duplexes remained dispersed under the identical conditions. These results suggest that the micrometer-scale particles covered with oligo-DNA strands also have high susceptibility to a duplex terminal sequence in their dispersion property, similar to previously reported DNA-functionalized nanoparticles. This property could potentially be used in various applications including analytical purpose.

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“…To date, most experiments of this type have been done using spherical colloids. The recent interest in synthetic colloids as material building blocks ( 10 , 11 ), however, has led to the development of a multitude of novel techniques for the synthesis of colloidal particles with specific geometries and interactions ( 12 – 14 ). This now allows investigations of the phase transformations in dense suspensions of shape-anisotropic particles, which promises to give unique insight into structural dynamics of complex systems.…”

mentioning

confidence: 99%

Observation of liquid glass in suspensions of ellipsoidal colloids

Roller

Laganapan

Meijer

et al. 2021

Proc. Natl. Acad. Sci. U.S.A.

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Despite the omnipresence of colloidal suspensions, little is known about the influence of colloid shape on phase transformations, especially in nonequilibrium. To date, real-space imaging results at high concentrations have been limited to systems composed of spherical colloids. In most natural and technical systems, however, particles are nonspherical, and their structural dynamics are determined by translational and rotational degrees of freedom. Using confocal microscopy of fluorescently labeled core–shell particles, we reveal that suspensions of ellipsoidal colloids form an unexpected state of matter, a liquid glass in which rotations are frozen while translations remain fluid. Image analysis unveils hitherto unknown nematic precursors as characteristic structural elements of this state. The mutual obstruction of these ramified clusters prevents liquid crystalline order. Our results give insight into the interplay between local structures and phase transformations. This helps to guide applications such as self-assembly of colloidal superstructures and also gives evidence of the importance of shape on the glass transition in general.

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Directed assembly of particles using directional DNA interactions

Cited by 30 publications

References 105 publications

Nature‐Inspired Emerging Chiral Liquid Crystal Nanostructures: From Molecular Self‐Assembly to DNA Mesophase and Nanocolloids

Nature‐Inspired Emerging Chiral Liquid Crystal Nanostructures: From Molecular Self‐Assembly to DNA Mesophase and Nanocolloids

DNA Terminal-Specific Dispersion Behavior of Polystyrene Latex Microparticles Densely Covered with Oligo-DNA Strands Under High-Salt Conditions

Observation of liquid glass in suspensions of ellipsoidal colloids

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