Planar Array of 1D Gold Nanoparticles on Ridge-and-Valley Structured Carbon

Teranishi, Toshiharu; Sugawara, Akira; Shimizu, Takami; Miyake, Mikio

doi:10.1021/ja017536k

Cited by 73 publications

(45 citation statements)

References 26 publications

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“…Schmid and coworkers [99,100] used ordered channels of porous alumina as a template to obtain linear arrangements of gold nanoparticles. The utilization of structured carbon and alumina substrate as a template also has been reported [101][102][103]. Teranishi and coworkers [101] reported the fabrication of one-dimensional arrangement of size-controlled gold nanoparticles in combination with a nanoscale ridgeand-valley structured substrate.…”

Section: Overview Of Metal Nanoparticle Organizationsmentioning

confidence: 97%

“…The utilization of structured carbon and alumina substrate as a template also has been reported [101][102][103]. Teranishi and coworkers [101] reported the fabrication of one-dimensional arrangement of size-controlled gold nanoparticles in combination with a nanoscale ridgeand-valley structured substrate. Biological macromolecules have been used to build defined inorganic nanostructures.…”

Section: Overview Of Metal Nanoparticle Organizationsmentioning

confidence: 97%

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Nanohybridized Synthesis of Metal Nanoparticles and Their Organization

Naka

Chujo

2009

Nanohybridization of Organic-Inorganic Materials

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Metal nanoparticles have various unusual chemical and physical properties compared with those of metal atoms or bulk metal due to the quantum size effect and their large superficial area, which make them attractive for applications such as optics, electronics, catalysis, and biology [1,2]. The catalytic properties of metal nanoparticles have generated great interest over the past decade. Among various metal nanoparticles, gold nanoparticles have tremendously high molar absorptivity in the visible region. Particle aggregation results in further color changes of gold nanoparticles solutions due to mutually induced dipoles that depend on interparticle distance and aggregate size. This phenomenon can be applied to various sensing systems [3][4][5][6][7]. The assembly of gold, silver, or copper nanoparticle monolayers is one of the ideal substrate for surfaced-enhanced Raman scattering (SERS) [8,9].Bare metal nanoparticles are prepared by employing physical methods such as mechanic subdivision of metallic aggregates and evaporation of a metal in a vacuum by resistive heating or laser ablation. Chemical methods such as the reduction of metal salts in solution are the most convenient ways to control the size of the particles and modified the surface chemical composition. To exploit nanoparticle properties for future device fabrication, self-organization of nanoparticles in a controlled manner is required. To construct such devices, new fabrication techniques must be developed with suitable metal nanoparticle-based building blocks. Several patterns for self-assemblies of the metal nanoparticles are schematically illustrated in Fig. 1.1. A number of outstanding reviews on the synthesis and assembly of metal nanoparticle-based building blocks have appeared [2,10]. This chapter highlights recent fabrication techniques of hybrid metal nanoparticles by controlled self-organization of the metal nanoparticle-based building blocks. Design of nanoparticle hybrids will be first focused on using building blocks for further assemblies. Several recent efforts have been concentrated on a system that

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Section: Overview Of Metal Nanoparticle Organizationsmentioning

confidence: 97%

Section: Overview Of Metal Nanoparticle Organizationsmentioning

confidence: 97%

Nanohybridized Synthesis of Metal Nanoparticles and Their Organization

Naka

Chujo

2009

Nanohybridization of Organic-Inorganic Materials

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“…For both substrates, the resulting ridge-and-valley topology is molded by depositing a carbon layer, which is further used as a replica upon detachment from its pattern either by simple dissolution of the underlying NaCl or lifting off when PTFE is used. In both cases, the grooved topology allows the nanosized objects (thiolate-stabilized gold particles) to be lined up on solvent evaporation [101,102]. The interplay of entropic gain and capillary forces near a groove explains this preferential adsorption [103,104].…”

Section: Template-assisted Organizationmentioning

confidence: 99%

Layer‐By‐Layer Self‐Assembly of Metal Nanoparticles on Planar Substrates: Fabrication and Properties

Cassagneau

2003

Colloids and Colloid Assemblies

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Self-assembly processes involve non-covalent interactions based on electrostatics, charge-transfer, hydrophilicity-hydrophobicity, H-bonding, chelation, metal coordination, p±p coupling, etc. The term ªselfº in self-assembly accounts for the fact that each interactive building block unit carries information that inherently defines its binding properties and is relevant enough to determine a spontaneous interaction at a receptive site or surface. The building block under consideration can be any molecule, ion, cluster, particle, polymer, etc., that participates in the film growth. The idea of using the binding capabilities (especially through electrostatic interactions) of micrometric objects to sequentially build-up structures on a support was first presented in 1966 [1]. Since then micrometer-sized objects have been designed and functionalized in such a way that they can self-organize into complex patterns [2]. Sequential electrostatic self-assembly was further extended to the build-up of biphosphonate anions with polycationic species (1988) [3] and to the adsorption of polyelectrolyte multilayers (1991) [4] as an alternative to the Langmuir-Blodgett monolayer transfer technique for film formation. The layer-bylayer assembly technique relies on the alternate immersion of a derivatized substrate, S, into a solution of building blocks A and a solution of building blocks B, both bearing chemical functions directing their mutual spontaneous interaction. Upon repeating adsorption cycles a periodic film grows at the substrate surface, S±(AB) n . The consecutive adsorption of particles with a binder on a planar substrate defines layers whose properties integrate over the entire film. The sequences of layering along with the choice of building blocks to be used determine a certain synergy between the layers. The versatility of this technique is not limited to the build-up of binary systems, and complex arrangements can be designed to form three-dimensional nanostructures with interesting properties [5]. Very often one building block is used as an inert binder to facilitate the adsorption of an element that brings the desired functionality upon assembly (Fig. 13.1). A given functionality is not only ªpackagedº within a discrete entity, say a nanoparticle, with specific magnetic, optical or electrical properties, but also localized within a three-dimensional nanostructure. Ideally, the layer-by-layer self-assembly

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“…On bare HOPG, these methods usually generate AuNP with broad size distributions because the HOPG basal plane offers a small energy barrier to ad-atom lateral diffusion [31]. Deposition of preformed AuNP with controlled size onto bare or functionalized HOPG has been used in alternate assembly strategies, such as solution soaking or casting [32][33][34][35], spin-coating [36,37], and electrostatic attractions [38]. Grumelli et al prepared AuNP island-functionalized HOPG by immersion of the bare HOPG into an AuNP solution [39].…”

Section: Introductionmentioning

confidence: 99%