Determination of Size and Concentration of Gold Nanoparticles from UV−Vis Spectra
Citations Over TimeTop 1% of 2007 papers
Abstract
The dependence of the optical properties of spherical gold nanoparticles on particle size and wavelength were analyzed theoretically using multipole scattering theory, where the complex refractive index of gold was corrected for the effect of a reduced mean free path of the conduction electrons in small particles. To compare these theoretical results to experimental data, gold nanoparticles in the size range of 5 to 100 nm were synthesized and characterized with TEM and UV-vis. Excellent agreement was found between theory and experiment. It is shown that the data produced here can be used to determine both size and concentration of gold nanoparticles directly from UV-vis spectra. Equations for this purpose are derived, and the precision of various methods is discussed. The major aim of this work is to provide a simple and fast method to determine size and concentration of nanoparticles.
Related Papers
- → Multipole method for microstructured optical fibers I Formulation(2002)472 cited
- → Closed form expressions for gravitational multipole moments of elementary solids(2019)5 cited
- Closed form expressions for the gravitational inner multipole moments of homogeneous elementary solids(2017)
- → The relations between the multipole moments in axistationary electrovacuum spacetimes and the $N$-soliton solution(2021)