DNA and DNAzyme-Mediated 2D Colloidal Assembly

Shyr, Margaret; Wernette, Daryl P.; Wiltzius, Pierre; Lu, Yi; Braun, Paul V.

doi:10.1021/ja711026r

Cited by 34 publications

(31 citation statements)

References 46 publications

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“…A monolayer of PS colloids with complimentary DNA was assembled on the patterned area through DNA hybridization and laser scattering was used as a facile approach to monitor the PS attachment. [158] However, in this case, the micro pattern was much larger than the colloids, which limited the spatial resolution. Controlled assembly with higher definition, preferably with single-particle precision, still remains a challenge, and yet this is an important next step in the development of substrate-assisted assembly.…”

Section: Linkage Of Particles With Anisotropic Shapesmentioning

confidence: 94%

Colloidal Assembly: The Road from Particles to Colloidal Molecules and Crystals

2010

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Colloidal particles may be considered as building blocks for materials, just like atoms are the bricks of molecules, macromolecules, and crystals. Periodic arrays of colloids (colloidal crystals) have attracted much interest over the last two decades, largely because of their unique photonic properties. The archetype opal structures are based on close-packed arrays of spheres of submicrometer diameter. Interest in structuring materials at this length scale, but with more complex features and ideally by self-assembly processes, has led to much progress in controlling features of both building blocks and assemblies. The necessary ingredients include colloids, colloidal clusters, and colloidal "molecules" which have special shapes and the ability to bind directionally, the control over short-range and long-range interactions, and the capability to place and orientate these bricks. This Review highlights recent experimental and theoretical progress in the assembly of colloids larger than 50 nm.

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Section: Linkage Of Particles With Anisotropic Shapesmentioning

confidence: 94%

Colloidal Assembly: The Road from Particles to Colloidal Molecules and Crystals

2010

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“…Concerning 2D structures, a very interesting procedure employs a combination of DNA-surface patterning and DNA-coated colloids for the sequence-specific reversible self-assembly of well-ordered 2D colloidal arrays (see for example [159][160][161][162]). Similar results were obtained with the above-mentioned DNA-origami [163].…”

Section: Soft Phases Made Of Dna-coated Colloidsmentioning

confidence: 99%

DNA-Based Soft Phases

Bellini¹,

Cerbino²,

Zanchetta³

2011

Topics in Current Chemistry

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This chapter reviews the state-of-the-art in the study of molecular or colloidal systems whose mutual interactions are mediated by DNA molecules. In the last decade, the robust current knowledge of DNA interactions has enabled an impressive growth of self-assembled DNA-based structures that depend crucially on the properties of DNA-DNA interactions. In many cases, structures are built on design by exploiting the programmable selectivity of DNA interactions and the modularity of their strength. The study of DNA-based materials is definitely an emerging field in condensed matter physics, nanotechnology, and material science. This chapter will consider both systems that are entirely constructed by DNA and hybrid systems in which latex or metal colloidal particles are coated by DNA strands. We will confine our discussion to systems in which DNA-mediated interactions promote the formation of "phases," that is structures extending on length scales much larger than the building blocks. Their self-assembly typically involves a large number of interacting particles and often features hierarchical stages of structuring. Because of the possibility of fine-tuning the geometry and strength of the DNA-mediated interactions, these systems are characterized by a wide variety of patterns of self-assembly, ranging from amorphous, to liquid crystalline, to crystalline in one, two, or three dimensions.

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“…Substrates simultaneously improve the control over assembly [33][34][35][36][37] and provide an identifiable growth direction, which helps to characterize the time evolution of growth and to develop strategies to obtain heterogeneous materials [38]. The ultimate goal is to combine flat or templated substrates and tunable patchy colloids to fashion a new family of metamaterials.…”

Section: Introductionmentioning

confidence: 99%

Adsorbed films of three-patch colloids: Continuous and discontinuous transitions between thick and thin films

2014

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We investigate numerically the role of spatial arrangement of the patches on the irreversible adsorption of patchy colloids on a substrate. We consider spherical three-patch colloids and study the dependence of the kinetics on the opening angle between patches. We show that growth is suppressed below and above minimum and maximum opening angles, revealing two absorbing phase transitions between thick and thin film regimes. While the transition at the minimum angle is continuous, in the Directed Percolation class, that at the maximum angle is clearly discontinuous. For intermediate values of the opening angle, a rough colloidal network in the Kardar-Parisi-Zhang universality class grows indefinitely. The nature of the transitions was analyzed in detail by considering bond flexibility, defined as the dispersion of the angle between the bond and the center of the patch. For the range of flexibilities considered we always observe two phase transitions. However, the range of opening angles where growth is sustained increases with flexibility. At a tricritical flexibility, the discontinuous transition becomes continuous. The practical implications of our findings and the relation to other nonequilibrium transitions are discussed.

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DNA and DNAzyme-Mediated 2D Colloidal Assembly

Cited by 34 publications

References 46 publications

Colloidal Assembly: The Road from Particles to Colloidal Molecules and Crystals

Colloidal Assembly: The Road from Particles to Colloidal Molecules and Crystals

DNA-Based Soft Phases

Adsorbed films of three-patch colloids: Continuous and discontinuous transitions between thick and thin films

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