Self-assembly of nanoalloys

Hcp cobalt nanocrystals with high magnetic anisotropy prepared by easy one-pot synthesis

“…This is the characteristic of the formation of the so called "supracrystals" resulting from the 3D periodic arrangement of the nanocrystals either in fcc or hcp organization. 18,19 This is due to the attractive van der Waals interactions between the metallic core and the "chemical bonds" of selfassemblies resulting from the interdigitation of the ligand molecules. 18 It should be noticed from Fig.…”

“…18,19 This is due to the attractive van der Waals interactions between the metallic core and the "chemical bonds" of selfassemblies resulting from the interdigitation of the ligand molecules. 18 It should be noticed from Fig. 1A that the deduced interparticles distance is 4.1 nm, which drastically limits the interparticle interaction.…”

Structural diversity in binary superlattices from Au and γ-Fe2O3 nanocrystals: towards fine tuning of dipolar interactions

“…The term binary superlattices (BNSLs) refers to the assemblies of nanomaterials composed of two different cooperative complementary components inducing synergistic effects. 1–5 Usually, two or more individual components are synthesized separately, then binary superlattices are fabricated by using the same methods used to fabricate the 3D assemblies composed of one type of NPs. 6–9 Spherical particles characterized by a low size polydispersity can usually self-assemble into superlattices with either face-centered cubic (fcc) or hexagonal close packed (hc) crystalline structure.…”

Directed Organization of Platinum Nanocrystals through Organic Supramolecular Nanoporous Templates

“…In this regard, both properties and performances may be enhanced by controlling finely the positional order within a two-dimensional (2D) self-assembly. , However, this is still a real challenge for NPs smaller than 3 nm in diameter. Indeed, the driving forces explaining the formation of self-assemblies of colloidal NPs, surrounded by capping molecules, are well-known. − It consists of different contributions to the NP–NP interactions including van der Waals (vdW) attractive forces between the cores and/or the passivating chains, mostly alkyl chains, as well as osmotic, electrostatic, and elastic contributions. On the one hand, the size of the nanocrystals has to be large enough (typically diameter ≥3 nm) to favor vdW interactions.…”