Heightened electromagnetic fields between metal nanoparticles: surface enhanced Raman scattering from metal-cytochrome c-metal sandwiches
Article Abstract:
A study was conducted to examine interparticle electromagnetic coupling in nanoparticle:molecule:nanoparticle sandwiches. The sandwiches were prepared by adsorption of cytochrome-coated colloidal gold nanoparticles onto aggregated colloidal silver. Affinity chromatography was carried out to purify horse heart cytochrome c while silver sols were prepared by aqueous reduction of AgNO3 with Na3-citrate. Results indicated the presence of heightened electromagnetic fields between metal nanoparticles.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
Protein:colloid conjugates for surface enhanced Raman scattering: stability and control of protein orientation
Article Abstract:
A study was conducted to examine conjugates between cytochrome c and colloidal silver particles that support technique of positioning a biomolecule analyte between two metal surfaces. Silver sols were obtained through the aqueous reduction of AgNO3 with trisodium citrate. Results indicated that Cc:au conjugate adsorbed to aggregates of colloidal silver supported greater stability to conformational and spin-state changes than Cc directly adsorbed to silver aggregates.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
Barcoded metal nanowires: optical reflectivity and patterned fluorescence
Article Abstract:
The wavelength-dependent optical reflectivity of individual stripes in metallic barcodes is reported and the way wavelength-dependence impacts the intensity of fluorescence from sandwich immuno- and hybridization assays performed on the particle surface, is analyzed. The reflectivity for a variety of metals incorporated as 1 to 2 micrometer stripes in barcoded nanowires is described and fluorescence intensity as a function of underlying metal identity.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: An experimental and theoretical study of interactions between unlike surface anions and increases in the rate of electrochemical reactions
- Abstracts: Synthesis of magnetic intermetallic FeAl nanoparticles from a non-magnetic bulk alloy. Scanning tunneling microscopy study of alanes/Al(111): contrasting neat and molecularly-terminated W tips
- Abstracts: Electron transfer and electrocatalytic properties of the immobilized methionine80alanine cytochrome c variant
- Abstracts: Intrinsic vibrational coherence in face-centered cubic supra-crystals of silver nanocrystals: Raman scattering measurements
- Abstracts: A brief review of the relationships between monolayer viscosity, phase behavior, surface pressure, and temperature using a simple monolayer viscometer