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

484059

Sigma-Aldrich

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

252433

Sigma-Aldrich

Rhodamine 6G, Dye content 99 %

85131

Sigma-Aldrich

Silver, colloidal, 65-75% Ag basis

576832

Sigma-Aldrich

Silver, nanopowder, <100 nm particle size, contains PVP as dispersant, 99.5% trace metals basis