DNA complexes with Ni nanoparticles: structural and functional properties

Tatarinova, O. N.; Smirnov, Igor P.; Safenkova, Irina V.; Varizhuk, Anna M.; Pozmogova, Galina E.

doi:10.1007/s11051-012-1211-z

Cited by 5 publications

(6 citation statements)

References 29 publications

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“…structures in which nickel NPs (inorganic "beads") were randomly distributed along DNA chains (organic "stems"). [19] Template-assisted methods are broadly applicable because a wide variety of hard and soft templates are available for the synthesis of necklace-like structures. However, the preparation of these templates can be cumbersome, and often the templates need to be removed after the NNs are generated.…”

Section: Soft Templatesmentioning

confidence: 99%

“…As a result, nanomaterials prepared via template-directed methods possess well-defined structures, morphologies, and configurations. [136][137][138][139] Both hard [35,46,[48][49][50]67,135,[140][141][142][143] and soft [19,82,144,145] templates have been used to create unique necklace-like nanostructures (Scheme 3). Template-directed synthesis generally includes the following three steps: 1) fabrication of a template, 2) use of the template to craft the desired nanostructure, and 3) removal of the template (if necessary).…”

Section: Template Synthesismentioning

confidence: 99%

“…Type III NNs are generally synthesized by templateassisted methods, as they need a robust template to immobilize the beads. The morphology of the necklace-like nanostructures obtained from these strategies can be further processed for various applications, such as in imaging, [17,18] biosensors, [19] fluorescence, [20] batteries, [13,[21][22][23][24][25] catalysis, [26][27][28][29][30][31] and SERS. [32,33] According to the composition of the NNs, the necklace-like materials can be divided into three main categories: organic, inorganic, and organic-inorganic hybrid NNs.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, multifarious organic-inorganic hybrid NNs are prepared for use in many different kinds of applications. [19,[81][82][83][84][85][86][87][88] Organic-inorganic hybrid NNs are mainly prepared through self-assembly methods and soft-template-directed synthesis methods. Polymers are attractive candidates for fabrication of organic-inorganic hybrid NNs due to their simplicity, versatility, and easily tuned shape/morphology.…”

Section: Introductionmentioning

confidence: 99%

“…Type III NNs are generally synthesized by template‐assisted methods, as they need a robust template to immobilize the beads. The morphology of the necklace‐like nanostructures obtained from these strategies can be further processed for various applications, such as in imaging, [ 17,18 ] biosensors, [ 19 ] fluorescence, [ 20 ] batteries, [ 13,21–25 ] catalysis, [ 26–31 ] and SERS. [ 32,33 ]…”

Section: Introductionmentioning

confidence: 99%

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Necklace‐Like Nanostructures: From Fabrication, Properties to Applications

et al. 2022

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or loop shapes. The particles (i.e., building blocks) could be spherical spheres, cubes, rods, disks, bipyramids, etc. Another type of NNs are formed when the particles are connected by linkers or threaded onto a string or stem (type II). The strings or stems could be polymer chains, nanowires, nanorods, nanotubes, nanobelts, etc. The third type of NNs is comprised of particles that are deposited on a robust support to form a periodic arrangement that resembles a necklace (type III). The supports could be polymers, nanorods, nanotubes, nanofibers, etc.Although these three types of necklacelike nanostructures are quite different from each other in shape and morphology, they all possess some common features, such as intrinsic high surface area, abundant transport channels, exposure of each component to the surface, and multiscale roughness of the surface (as compared to other 1D nanogeometries such as rods, wires, fibers, tubes, and belts). Most type I necklace-like nanostructures are discontinuous structures that consist of 1D aligned building blocks. The interparticle distance between the building blocks is crucial to the properties of the necklace-like nanostructures. When the interparticle distance is sufficiently short, coherent optical properties are obtained through near-field coupling of their surface plasmon resonances. [11] Additionally, electromagnetic coupling between isolated nanoparticles (NPs) is much lower than the electromagnetic interactions between NPs in close proximity in a necklace-like nanostructure. [12] The static electromagnetic interactions between neighboring metallic NPs in necklacelike nanostructures may contribute to an enhancement of nonlinear optical properties and surface-enhanced Raman scattering (SERS) effect. For type II necklace-like nanostructures, the bead-on-string architecture may provide facile electron transfer and percolation, an open scaffold for ion accessibility, maximized surface area to volume ratio, and good strain tolerance, all of which are highly conducive to energy storage. [13] For type III necklace-like nanostructures, the percolating clusters of metallic or semiconductor NPs show different electrical properties because of their interparticle electron transport. [14] Thus, decorating metallic or semiconductor NPs over a robust support to form necklace-like structures is a promising strategy to craft single-electron devices. [15] Notably, NNs possess a unique surface morphology that is distinctly different from the smooth surface of nanorods, nanotubes, and nanowires. Necklace-like structures possess multiscale roughness, which renders themThe shape-controlled synthesis of nanocrystals remains a hot research topic in nanotechnology. Particularly, the fabrication of 1D structures such as wires, rods, belts, and tubes has been an interesting and important subject within nanoscience in the last few decades. 1D necklace-like micro/nanostructures are a sophisticated geometry that has attracted increasing attention due to their anisotropic and periodic structure, in...

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Section: Soft Templatesmentioning

confidence: 99%