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Self-assembly of Anisotropy Gold Nanocubes Into Large Area Two-dimensional Monolayer Superlattices by Jinlan Li; Xuejie Liu; Jing Jin; Nan Yan; Wei Jiang is a Materials Science article available to read on EtoBox.

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## Abstract The spontaneous self-assembly of metal nanocrystals into two-dimensional (2D) monolayer superlattices with highly ordered symmetry and configuration paves the way towards the fabrication of functional materials. However, there remains great challenge for anisotropic nanocrystals to self-assembly into high quality superlattice because of the orientation and configuration consistency. Here, a facile yet universal solvent annealing driven 2D interfacial assembly of synthetic dried metal nanocrystals is firstly developed to realize the construction of the non-close-packing 2D monolayer gold nanocube (AuNC) superlattice with tunable interparticle distance and internal configurations (i.e. face-to-face and hexagonally-packed arrangement), which is achieved by precisely controlling molecular weight of polymer ligands tethered on AuNCs and the van der Waals forces between the adjacent AuNCs. In addition, the scale of the generated 2D monolayer AuNC superlattice with highly ordered internal arrangement and orientation can reach up to hundreds of micrometers, thus acquiring significant surface-enhanced Raman scattering performance of the large scale superlattice due to the strong

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Author

Jinlan Li; Xuejie Liu; Jing Jin; Nan Yan; Wei Jiang

Publisher

IOP Publishing

Published

2022

Language

EN

Field

Materials Science (Physical Sciences)