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Strong dependence of surface plasmon resonance and surface enhanced Raman scattering on the composition of Au-Fe nanoalloys


, : Strong dependence of surface plasmon resonance and surface enhanced Raman scattering on the composition of Au-Fe nanoalloys. Nanoscale 6(3): 1423-1433

Nanoalloys of noble metals with transition metals are crucial components for the integration of plasmonics with magnetic and catalytic properties, as well as for the production of low-cost photonic devices. However, due to synthetic challenges in the realization of nanoscale solid solutions of noble metals and transition metals, very little is known about the composition dependence of plasmonic response in nanoalloys. Here we demonstrate for the first time that the elemental composition of Au-Fe nanoalloys obtained by laser ablation in liquid solution can be tuned by varying the liquid environment. Due to surface passivation and reaction with thiolated ligands, the nanoalloys obtained by our synthetic protocol are structurally and colloidally stable. Hence, we studied the dependence of the surface plasmon resonance (SPR) on the iron fraction and, for the first time, we observed surface enhanced Raman scattering (SERS) in Au-Fe nanoalloys. SPR and SERS performances are strongly affected by the iron content and are investigated using analytical and numerical models. By demonstrating the strong modification of plasmonic properties on the composition, our results provide important insights into the exploitation of Au-Fe nanoalloys in photonics, nanomedicine, magneto-plasmonic and plasmon-enhanced catalysis. Moreover, our findings show that several other plasmonic materials exist beyond gold and silver nanostructures.

US$19.90

PMID: 24309909

DOI: 10.1039/c3nr04995g


Other references

Kraemer, E.O., 1940: Effect of solvation on frictional constants and frictional ratios as determined with the ultracentrifuge and by diffusion. General expressions for the frictional constants are derived, and the frictional ratio is given by [image] Numerical examples are given for the particular case of protein and water.

Hubinont P.O., 1980: Medical aspects of human ovo implantation. Leroy, F Et Al (Ed ) Progress in Reproductive Biology, Vol 7 Blastocyst-Endometrium Relationships; Seminar on Reproductive Physiology And Sexual Endocrinology, Brussels, Belgium, May 21-24, X+336p S Karger: Basel, Switzerland, New York, N Y , Usa Illus P296-301

Korbelius, V., 1899: Beitrag zur Frage uber das Verhaltnis des Pferdes zur Ankylostomiasis des Menschen. Zentralblatt fuer Bakteriologie, XXVI 114-121 & 185-189

Carey, D.P., 1998: Action, perception, cognition, and the inferior parietal cortex. Trends in Cognitive Sciences 2(5): 162-164

Bianchi, G.; Montanari, P.; Fabbri, A.; Gamberini, A.; Zoli, M.; Marchesini, G., 1995: Thyroid volume in type 1 diabetes patients without overt thyroid disease. An association between insulin-dependent diabetes mellitus (type 1) and thyroid diseases has long been reported, but the morphological evaluation of the thyroid in type 1 diabetes patients without overt thyroid disease has always been limited to p...

Dauphin A., 1985: Iodized products. Dauphin A. C. Darbord. Hygiene Hospitaliere Pratique (practical Hospital Hygiene). Xxiv 578p. Editions Medicales Internationales: Paris, France. Illus. 117-138

Burbank, Reginald, 1929: A study of the streptococcus in the etiology of arthritis, with demonstration of arthritic lesions experimentally produced. This study, continuing one earlier reported, was made on an unspecified number of rabbits. The evidence would inculpate both Streptococcus infrequens and Strep. faecalis as very important causative factors in the production of chronic arthritis in...

Mierzenska, Marta, 2002: New locality of rare liverwort Haplomitrium hookerii in Poland. During the field works carried out in May 2000 in the Bieszczady National Park (Eastern Carpathians) a new locality of liverwort Haplomitrium hookerii (Smith) Nees was found (Fig. 1). A few specimens of this rare liverwort are scattered on the edg...

Gurkan, S.; Dikman, S.; Saland, M.Jeffrey., 2007: A case of autoimmune thyroiditis and membranoproliferative glomerulonephritis. Thyroid hormones play an important role in the growth of the kidney and maintenance of its functions. Prolonged hypothyroidism is known to be accompanied by changes in renal morphology such as thickening of the glomerular and tubular basement memb...

Caveney S., 1976: Hormonal regulation of inter cellular communication. Canadian Federation of Biological Societies Proceedings 19: 93