Abstract
This article highlights recent advances in the controlled self-assembly of nanoparticles to produce dimeric nanoparticle structures. The relevance of this emergent field is discussed in terms of recent applications in plasmonics and chemical catalysis. The concept of bond-valence applied to nanoparticles will be discussed, emphasizing some general approaches that have been successfully used to build these structures. Further, the asymmetric functionalization of nanoparticles surfaces as a path to drive selective aggregation, the use of biomolecules to self-assemble nanoparticles into dimers in solution, and the confinement of aggregates in small cavities are discussed.
Highlights
The synthesis of heterogeneous nanomaterials is a challenging area of research that has found applications in different research fields, such as chemistry, physics, and bio-medical sciences
The ability of metal nanoparticles (NP’s) to enhance the Raman signals from molecules adsorbed on the surface has become a useful analytical tool, able to increase the sensitivity of molecular detection to the single-molecule level.[1,2,3,4,5]
Special interest has been devoted to the synthesis of hybrid materials combining noble metal and metal-oxide catalytic nanoparticles
Summary
The synthesis of heterogeneous nanomaterials is a challenging area of research that has found applications in different research fields, such as chemistry, physics, and bio-medical sciences. DNA-NP conjugates have been the best candidates for this approach, since several methods have been developed for the synthesis of nanoparticles functionalized with single DNA molecules, being able to form discrete numbers of molecular bridges between NPs with high selectivity and specificity.
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