TY - JOUR

T1 - Plasmonic carbon nanohybrids from laser-induced deposition

T2 - controlled synthesis and SERS properties

AU - Povolotckaia, Anastasia

AU - Pankin, Dmitrii

AU - Petrov, Yuriy

AU - Vasileva, Anna

AU - Kolesnikov, Ilya

AU - Sarau, George

AU - Christiansen, Silke

AU - Leuchs, Gerd

AU - Manshina, Alina

PY - 2019/6/15

Y1 - 2019/6/15

N2 - A novel single-step, laser-induced and solution-based process is presented for synthesizing complex hybrid metal/carbon nanostructures. The process relies on simply illuminating the interface between a substrate and a liquid solution of the supramolecular complex [Au 13 Ag 12 (C 2 Ph) 20 (PPh 2 (C 6 H 4 ) 3 PPh 2 ) 3 ][PF 6 ] 5 (hereinafter abbreviated as SMC) with an unfocussed He–Cd laser having a wavelength of 325 nm and an intensity of I = 0.5 W/cm 2 . The process results in hybrid nanostructures of well-controlled morphology: nanoparticles (NP) and 2D flakes, which may also grow jointly to form 3D morphologically complex multipetal ‘flower-like’ structures. At the atomic scale, the obtained metamaterials are complex in composition and structure, i.e., they contain bimetallic Au–Ag nanoclusters of diameter 3–5 nm incorporated inside a carbonaceous matrix. This matrix can be amorphous or crystalline, and the details of the compositional outcome can be controlled and steered by the laser deposition parameters. Au–Ag nanoclusters show plasmonic behavior including the enhancement of electromagnetic fields of visible light. This leads to the enhancement of Raman scattering by the Au–Ag nanoparticle ensemble within the carbonaceous matrix. This enables a 3D architecture for stimulating surface-enhanced Raman scattering (SERS).

AB - A novel single-step, laser-induced and solution-based process is presented for synthesizing complex hybrid metal/carbon nanostructures. The process relies on simply illuminating the interface between a substrate and a liquid solution of the supramolecular complex [Au 13 Ag 12 (C 2 Ph) 20 (PPh 2 (C 6 H 4 ) 3 PPh 2 ) 3 ][PF 6 ] 5 (hereinafter abbreviated as SMC) with an unfocussed He–Cd laser having a wavelength of 325 nm and an intensity of I = 0.5 W/cm 2 . The process results in hybrid nanostructures of well-controlled morphology: nanoparticles (NP) and 2D flakes, which may also grow jointly to form 3D morphologically complex multipetal ‘flower-like’ structures. At the atomic scale, the obtained metamaterials are complex in composition and structure, i.e., they contain bimetallic Au–Ag nanoclusters of diameter 3–5 nm incorporated inside a carbonaceous matrix. This matrix can be amorphous or crystalline, and the details of the compositional outcome can be controlled and steered by the laser deposition parameters. Au–Ag nanoclusters show plasmonic behavior including the enhancement of electromagnetic fields of visible light. This leads to the enhancement of Raman scattering by the Au–Ag nanoparticle ensemble within the carbonaceous matrix. This enables a 3D architecture for stimulating surface-enhanced Raman scattering (SERS).

UR - http://www.scopus.com/inward/record.url?scp=85062689051&partnerID=8YFLogxK

U2 - 10.1007/s10853-019-03478-9

DO - 10.1007/s10853-019-03478-9

M3 - Article

AN - SCOPUS:85062689051

VL - 54

SP - 8177

EP - 8186

JO - Journal of Materials Science

JF - Journal of Materials Science

SN - 0022-2461

IS - 11

ER -