title: Experimental and theoretical investigations of spectroscopic properties of azobenzene derivatives in solution.
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.
authors: Department of Physical Chemistry, Collegium Medicum, Nicolaus Copernicus University, Kurpińskiego 5, 85-950, Bydgoszcz, Poland. robert.zalesny@cm.umk.pl
authors: Robert
authors: R
authors: Zaleśny
authors: Katarzyna
authors: K
authors: Matczyszyn
authors: Anna
authors: A
authors: Kaczmarek
authors: Wojciech
authors: W
authors: Bartkowiak
authors: Piotr
authors: P
authors: Cysewski
mesh_terms: D001391:Azo Compounds / Q000032:analysis* / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D015394:Molecular Structure; D019904:Polymethyl Methacrylate / Q000032:analysis / Q000737:chemistry; D011789:Quantum Theory; D012996:Solutions / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet; D013237:Stereoisomerism; D014240:Trichloroethanes / Q000737:chemistry
chemical_list: D001391:Azo Compounds; D012996:Solutions; D014240:Trichloroethanes; C024567:1,1,2-trichloroethane; D019904:Polymethyl Methacrylate; C009850:azobenzene