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Updated: Jun 21, 2026

Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems
Published on: February 10, 2020
[Solvent effects on raman spectroscopy of 1, 1,3, 3-tetramethylurea in organic solvents]
Liu-yang Zhang1, Zuo-wei Li, Guo-hui Lu
1College of Physics, Jilin University, Changchun 130021, China. johnien@163.com
Abstract:
Raman spectra of 1,1,3,3-tetramethylurea in 20 solvents were obtained to investigate the solute-solvent interactions and to correlate solvent properties such as the Kirkwood-Bauer-Magat (KBM)equation, the solvent acceptor number (AN)and the linear solvation energy relationships (LSER), respectively, with the Raman shifts of carbonyl group. There is little linear relation between dielectric constants and the Raman shift. These solvents were divided into two sections by the acceptor number. The two sections exhibit a good correlation with AN, respectively. These frequencies show a better correlation with LSER than the solvent AN. How the solvents interacts with the C==O can be obtained from the regression coefficients.
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