Plasmon Coupling in Layer-by-Layer Assembled Gold Nanorod Films

Abstract

A systematic study of the optical effects derived from plasmon coupling in mono- and multilayers of gold nanorods is presented. The monolayers were prepared using the standard polyelectrolyte-assisted layer-by-layer (LbL) method and gold nanorods coated with either poly(N-vinyl pyrrolidone) or homogeneous silica shells. Such plasmon coupling leads in general to extensive red-shift and broadening of the longitudinal plasmon bands, which are discussed on the basis of recently reported theoretical modeling. Whereas for PVP-coated rods, strong interactions were observed for high-density monolayers and closely spaced multilayers, increasingly efficient screening is observed for thicker silica shells.

Peptide‐Grafted Nanodiamonds: Preparation, Cytotoxicity and Uptake in Cells

“…Alternatively, the starting cNDs were treated with the PAH polyelectrolyte (M W = 10 000). [23] Functionalisation that is based on the adsorption of amino compounds, such as poly-l-lysine, on cND surface has already been reported by Huang and Chang. [16] They studied the possibility of grafting cytochrome c on the available amino functions of adsorbed poly-l-lysine via a linker.…”

Comparison of Plasmonic Sensing between Polymer- and Silica-coated Gold Nanorods

“…Some fluctuating of baseline was unavoidable. Figure 3b shows spectral shifts of SPL bands in different solvents; their refractive 15 and theoretically. [16][17][18] As shown in Fig.…”

Shape-dependent plasmon resonances of gold nanoparticles

“…12 Given the advanced state of their production, most recent experimental work on gold nanorods has focused on further manipulation of their surface chemistry, [13][14][15][16][17][18][19][20][21][22][23][24] formation of complex assemblies, [25][26][27][28][29][30][31][32][33] and development of biomedical and sensing applications.…”