Uv-Vis Ratiometric Resonance Synchronous Spectroscopy For Determination Of Nanoparticle And Molecular Optical Cross Sections
Abstract
Demonstrated herein is a UV-vis Ratiometric Resonance Synchronous Spectroscopic (R2S2, pronounced as "R-two-S-two" for simplicity) technique where the R2S2 spectrum is obtained by dividing the resonance synchronous spectrum of a NP-containing solution by the solvent resonance synchronous spectrum. Combined with conventional UV-vis measurements, this R2S2 method enables experimental quantification of the absolute optical cross sections for a wide range of molecular and nanoparticle (NP) materials that range optically from pure photon absorbers or scatterers to simultaneous photon absorbers and scatterers, simultaneous photon absorbers and emitters, and all the way to simultaneous photon absorbers, scatterers, and emitters in the UV-vis wavelength region. Example applications of this R2S2 method were demonstrated for quantifying the Rayleigh scattering cross sections of solvents including water and toluene, absorption and resonance light scattering cross sections for plasmonic gold nanoparticles, and absorption, scattering, and on-resonance fluorescence cross sections for semiconductor quantum dots (Qdots). On-resonance fluorescence quantum yields were quantified for the model molecular fluorophore Eosin Y and fluorescent Qdots CdSe and CdSe/ZnS. The insights and methodology presented in this work should be of broad significance in physical and biological science research that involves photon/matter interactions.
Publication Date
3-1-2016
Publication Title
Analytical Chemistry
Volume
88
Issue
5
Number of Pages
2891-2898
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1021/acs.analchem.5b04722
Copyright Status
Unknown
Socpus ID
84959483194 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/84959483194
STARS Citation
Nettles, Charles B.; Zhou, Yadong; Zou, Shengli; and Zhang, Dongmao, "Uv-Vis Ratiometric Resonance Synchronous Spectroscopy For Determination Of Nanoparticle And Molecular Optical Cross Sections" (2016). Scopus Export 2015-2019. 3056.
https://stars.library.ucf.edu/scopus2015/3056