Title
Circular Dichroism Spectrometers
Author
G.E. Tranter
Year
2016
Journal
Reference Module in Chemistry, Molecular Sciences and Chemical Engineering
Abstract
Circular Dichroism (CD) is the differential absorption of left and right circularly polarised light by a chiral substance. The phenomenon can occur for all wavelengths of light and results in “vibrational” CD (VCD) in the infra-red region and “electronic” CD (ECD) in the ultra violet and visible regions, corresponding to the different excitations induced in a molecule by the light; “Raman Optical Activity” (ROA) is the analogous phenomenon for Raman scattering. The VCD and ROA techniques are described elsewhere in this work, the section here concentrates on the instrumentation for ECD. The basis of CD, the main features of ECD spectrometers and optimal methodology for obtaining spectra are described.
Keywords
Circular dichroism,