Direct observation of chemical reactions on single gold nanocrystals using surface plasmon spectroscopy.

Investigating the Effects of Some Capping Agents upon Gold Nanocrystals Stability, Size and Surface Plasmon Resonance

Electrochemical charging of single gold nanorods.

Metal nanocrystals are commonly used to mediate important chemical reactions such as water splitting and CO oxidation. To investigate such redox reactions in detail, it would be useful to be able to carry out electrochemistry on single metal nanocrystals. We report here that the surface plasmon resonance of a single gold nanocrystal can be reversibly and rapidly tuned by tens of nanometers elec...

Behenic Acid Monolayer and Bilayer Assemblies- A Study of Concanavalin A (Con A) Adsorption and its Interaction with Dextran Using Surface Plasmon Resonance Spectroscopy and Microscopy

Deposition of behenic acid (B.A) mono and bilayers onto gold coated surfaces was performed by Langmuir-Blodget dip-casting technique. Surface Plasmon resonance (SPR) and ellipsometry methods were employed for investigation of the monolayer and bilayer films. The adsorption of the biologically important molecule Concanavalin A (Con A) from bulk solution to these monolayers and bilayers as we...

Nanooptic with Plasmons – Noble metal and Semiconductor Nanoparticles for Optical Devices

of Presentation Presentation Title: Nanooptic with Plasmons – Noble metal and Semiconductor Nanoparticles for Optical Devices Abstract : We produce size and shape controlled metal, semiconducting and hybrid nanocrystals by wet chemical synthesis, 2 especially in microfluidic continuous flow. Understanding We produce size and shape controlled metal, semiconducting and hybrid nanocrystals by wet ...

Noble metal nanocrystals: plasmon electron transfer photochemistry and single-molecule Raman spectroscopy.

The excited electronic states of noble metal Au and Ag nanocrystals are very different than those of molecules. Ag and Au nanocrystal optical transitions (plasmons) in the visible can be so intense that they significantly modify the local electromagnetic field. Also, coherent elastic Rayleigh light scattering is stronger than normal electronic absorption of photons for larger nanocrystals. Thes...