Yang yang Zhao
Self-assembly of Gold Nanoparticles into an Adjustable Plasmonic 3D Lattice using Janus-type Forked Mesogenic Ligands
Zhao, Yang yang; Cao, Yu; Siligardi, Giuliano; Mehl, Georg H.; Liu, Feng; Ungar, Goran
Professor Georg Mehl G.H.Mehl@hull.ac.uk
Professor of Organic and Materials Chemistry
We report the formation of a 3D body-centred self-assembled superlattice of gold nanoparticles whose interparticle gap, and hence its plasmonic properties, are adjustable exclusively in the xy-plane. Thus, even though the particles are spherical, their anisotropic packing generates tailorable plasmonic dichroism. The gold nanoparticles are coated with forked ligands containing two mesogens: either two cholesterols (“twin”), one cholesterol and one azobenzene (“Janus”), or a mixture of the two. Beside the body-centered arrangement of gold nanoparticles, the structure also contains unusual two-dimensionally x-y dual undulated (eggbox-like) smectic-like layers of mesogens. Moreover, the presence of azobenzene mesogens allows the superlattice to be melted through UV-induced photo-isomerization; the process is reversible displaying low fatigue on repeated cycling.
Zhao, Y. Y., Cao, Y., Siligardi, G., Mehl, G. H., Liu, F., & Ungar, G. (2022). Self-assembly of Gold Nanoparticles into an Adjustable Plasmonic 3D Lattice using Janus-type Forked Mesogenic Ligands. Chemistry - An Asian Journal, Article e202200057. https://doi.org/10.1002/asia.202200057
|Journal Article Type||Article|
|Acceptance Date||Feb 3, 2022|
|Online Publication Date||Mar 22, 2022|
|Publication Date||Mar 4, 2022|
|Deposit Date||Mar 15, 2022|
|Publicly Available Date||Mar 5, 2023|
|Journal||Chemistry - An Asian Journal|
|Peer Reviewed||Peer Reviewed|
|Keywords||Gold; Nanoparticles; Liquid crystal; Plasmonic resonance; Photoisomerization|
This file is under embargo until Mar 5, 2023 due to copyright reasons.
Contact G.H.Mehl@hull.ac.uk to request a copy for personal use.
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