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Stable silver/biopolymer hybrid plasmonic nanostructures for high performance surface enhanced Raman scattering (SERS).

Stable silver/biopolymer hybrid plasmonic nanostructures for high performance surface enhanced Raman scattering (SERS).

Journal of nanoscience and nanotechnology (2013-07-26)

Jaya Sundaram, Bosoon Park, Yongkuk Kwon

ABSTRACT

Silver/biopolymer nanoparticles were prepared by adding 100 mg silver nitrate to 2% polyvinyl alcohol solution and reduced the silver nitrate using 2% trisodium citrate for high performance Surface Enhanced Raman Scattering (SERS) substrates. Optical properties of nanoparticle were measured using UV/VIS spectroscopy and hyperspectral imaging microscopy. Nanoparticle morphology was analyzed using transmission electron microscopy. Substrate reproducibility and repeatability was checked by measuring SERS signals of trans-1,2-bis(4-pyridyl)ethylene (BPE) and Rhodamine 6G.

MATERIALS

Product Number

Brand

Product Description

Sigma-Aldrich

Silver, conductive paste

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Silver nanowires, diam. × L 50 nm × 6 μm, 0.5% (isopropyl alcohol suspension)

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Silver, nanopowder, <150 nm particle size, 99% trace metals basis

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Silver, foil, thickness 1.0 mm, 99.99% trace metals basis

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Silver, wire, diam. 1.0 mm, ≥99.99% trace metals basis

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Silver, wire, diam. 1.0 mm, 99.9% trace metals basis

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Silver, foil, thickness 0.1 mm, 99.9% trace metals basis

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Rhodamine 6G, suitable for fluorescence, BioReagent

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Silver, colloidal, 65-75% Ag basis

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Rhodamine 6G perchlorate, Dye content 99 %

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Rhodamine 6G, Dye content ~95 %

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