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  • Experimental and theoretical investigations of spectroscopic properties of azobenzene derivatives in solution.

Experimental and theoretical investigations of spectroscopic properties of azobenzene derivatives in solution.

Journal of molecular modeling (2007-04-18)
Robert Zaleśny, Katarzyna Matczyszyn, Anna Kaczmarek, Wojciech Bartkowiak, Piotr Cysewski
ABSTRACT

The UV-Vis spectra of series of polymethylmethacrylate (PMMA) copolymers with attached trans-azobenzene derivatives were measured in 1,1,2-trichloroethane. In order to gain some insight into the recorded spectra, the quantum chemical calculations were performed for the substituted azobenzenes using both configuration interaction with single excitations method (CIS) as well as density functional theory (DFT) with B3LYP and PBE0 functionals. The calculations were performed in solvent. In particular, we found that the PBE0 excitation energies are in very good agreement with the experimental data.

MATERIALS
Product Number
Brand
Product Description

Supelco
1,1,2-Trichloroethane solution, certified reference material, 5000 μg/mL in methanol
Sigma-Aldrich
1,1,2-Trichloroethane, contains ≤3% 2-propanol as stabilizer, 97%
Supelco
1,1,2-Trichloroethane, analytical standard