Research output: Contribution to journal › Article › peer-review
Laser-induced transformation of supramolecular complexes: a novel approach to control formation of hybrid multi-yolk-shell Au-Ag@a-C:H nanostructures for stable SERS substrates. / Manshina, A.A.; Grachova, E.V.; Povolotskiy, A.V.; Povolotckaia, A.V.; Petrov, Yu.V.; Koshevoy, I.O.; Makarova, A.A.; Vyalikh, D.V.; Tunik, S.P.
In: Scientific Reports, Vol. 5, 12027, 2015.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Laser-induced transformation of supramolecular complexes: a novel approach to control formation of hybrid multi-yolk-shell Au-Ag@a-C:H nanostructures for stable SERS substrates
AU - Manshina, A.A.
AU - Grachova, E.V.
AU - Povolotskiy, A.V.
AU - Povolotckaia, A.V.
AU - Petrov, Yu.V.
AU - Koshevoy, I.O.
AU - Makarova, A.A.
AU - Vyalikh, D.V.
AU - Tunik, S.P.
PY - 2015
Y1 - 2015
N2 - In the present work an efficient approach of the controlled formation of hybrid Au–Ag–C nanostructures based on laser-induced transformation of organometallic supramolecular cluster compound is suggested. Herein the one-step process of the laser-induced synthesis of hybrid multi-yolk-shell Au-Ag@a-C:H nanoparticles which are bimetallic gold-silver subnanoclusters dispersed in nanospheres of amorphous hydrogenated a-C:H carbon is reported in details. It has been demonstrated that variation of the experimental parameters such as type of the organometallic precursor, solvent, deposition geometry and duration of laser irradiation allows directed control of nanoparticles’ dimension and morphology. The mechanism of Au-Ag@a-C:H nanoparticles formation is suggested: the photo-excitation of the precursor molecule through metal-to-ligand charge transfer followed by rupture of metallophilic bonds, transformation of the cluster core including red-ox intramolecular reaction and aggregation of heterometallic species that results in the hybrid metal/carbon nanoparticles with multi-yolk-shell architecture formation. It has been found that the nanoparticles obtained can be efficiently used for the Surface-Enhanced Raman Spectroscopy label-free detection of human serum albumin in low concentration solution.
AB - In the present work an efficient approach of the controlled formation of hybrid Au–Ag–C nanostructures based on laser-induced transformation of organometallic supramolecular cluster compound is suggested. Herein the one-step process of the laser-induced synthesis of hybrid multi-yolk-shell Au-Ag@a-C:H nanoparticles which are bimetallic gold-silver subnanoclusters dispersed in nanospheres of amorphous hydrogenated a-C:H carbon is reported in details. It has been demonstrated that variation of the experimental parameters such as type of the organometallic precursor, solvent, deposition geometry and duration of laser irradiation allows directed control of nanoparticles’ dimension and morphology. The mechanism of Au-Ag@a-C:H nanoparticles formation is suggested: the photo-excitation of the precursor molecule through metal-to-ligand charge transfer followed by rupture of metallophilic bonds, transformation of the cluster core including red-ox intramolecular reaction and aggregation of heterometallic species that results in the hybrid metal/carbon nanoparticles with multi-yolk-shell architecture formation. It has been found that the nanoparticles obtained can be efficiently used for the Surface-Enhanced Raman Spectroscopy label-free detection of human serum albumin in low concentration solution.
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-84936971019&origin=inward&txGid=8f779c39e3ee8108ea97bc8897ec2dc8
U2 - 10.1038/srep12027
DO - 10.1038/srep12027
M3 - Article
VL - 5
JO - Scientific Reports
JF - Scientific Reports
SN - 2045-2322
M1 - 12027
ER -
ID: 5776829