Exploring Resonance Raman Scattering with 4‑Nitrophenol

Raman scattering is a powerful tool for revealing the vibrations of molecules, but as a nonlinear optical phenomenon, its signals can change via mechanisms like resonance enhancement that have no direct analogue in infrared spectroscopy. In this work, complementary measurements conducted on 4-nitrop...

Full description

Saved in:
Bibliographic Details
Published in:Journal of chemical education 2022-09, Vol.99 (9), p.3233-3241
Main Authors: Jahncke, Catherine L., Zhang, Wenyao, DeMuynck, Bethany M., Hill, Adam D.
Format: Article
Language:English
Subjects:
Analogy (Language change)
College students
Conjugates
Infrared spectroscopy
Lasers
Nitrophenol
NMR
Nonlinear optics
Nuclear magnetic resonance
Optical communication
Raman spectra
Resonance
Resonance scattering
Scattering
Semiconductor lasers
Spectrum analysis
Students
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Raman scattering is a powerful tool for revealing the vibrations of molecules, but as a nonlinear optical phenomenon, its signals can change via mechanisms like resonance enhancement that have no direct analogue in infrared spectroscopy. In this work, complementary measurements conducted on 4-nitrophenol and its conjugate base allow students to directly control the variables responsible for enhancement. Changing sample UV–vis absorbance with pH and excitation color with the addition of a diode laser allows students to explore the criteria for resonance Raman scattering: only the conjugate base and 405 nm laser in combination produce enhancement. Adjustments to the experiment make it suitable for either an upper-level undergraduate course lab or an independent inquiry project.
ISSN:0021-9584
1938-1328
DOI:10.1021/acs.jchemed.2c00210