Chapter 8–Illustrated IR and Raman Spectra Demonstrating Important Functional GroupsIn this chapter, the IR and Raman spectra of many compounds are presented in a stacked format. The spectrum number is given at the upper right-hand corner of each IR spectrum. IR measurements were done making ...
In the Raman spectrum, the D band represents the disordered structure and degree of defects induced by depressions, edges, and functional groups, and the G band is related to the graphite structure (Yun et al., 2018). Furthermore, the intensity ratio of the two peaks (ID/IG) reflects ...
than the incident photons. This energy shift corresponds to the energy difference between the initial and final states of the molecular vibrations involved in the scattering process. The difference in energy manifests as a shift towards longer wavelengths (lower frequency) in the Raman spectrum. ...
When spectrum is collected consistently over the course of an experiment, it can reveal a 'molecular video' that provides key information regarding the kinetics, mechanisms, and form changes during a reaction. Traditionally, this analysis has been performed by spectroscopists with expert knowledge in...
LASER RAMAN SPECTROSCOPY Abstract Inelastic scattering of light—or Raman scattering—from elementary excitations in a material yields structural and dynamic information on a molecular level. The Raman spectrum can be analyzed in terms of the molecular components or functional groups thus providing a “...
In Raman spectroscopy, energy transitions arise from molecular vibrations involving identifiable functional groups. The Raman spectrum of a compound is a plot of these energy transitions and identifies that compound. Most prior art considered a two-dimensional (planar) scanning analysis preferable, partly...
Each biomolecule in the microalgae has its own specific functional group, and their characteristic peak frequencies can be reflected in the Raman spectrum5. The characteristics of the functional groups make it feasible to obtain information on the chemical composition of organisms and analyze them in ...
Contribution of functional groups to the raman spectrum of nanodiamond powders. Chem. Mater. 21, 273–279 (2009). Acknowledgements This work was supported by National Natural Science Foundation of China (51272013, 21371149). Scientific Reports | 6:20539 | DOI: 10.1038/srep20539 4 www.nature.com...
The spectra of the 2–5 nm nanodiamond (the bottom spectrum) and the created after high-power irradiation sp2 clusters (the middle spectrum) were acquired at the same laser beam power of 0.7 mW. The upper spectrum Fig. 3 Raman spectra of the 2–5-nm nanodiamond at the 257 and 458-nm...
A Raman spectrum is a plot of the intensity of Raman scattered radiation as a function of its frequency difference from the incident radiation (usually in units of wavenumbers, cm−1). From: Material-Tissue Interfacial Phenomena, 2017