Solvatochromic effects in the absorption spectra of some azobenzene compounds
作者:Elena Rusu、Dana-Ortansa Dorohoi、Anton Airinei
DOI:10.1016/j.molstruc.2008.01.053
日期:2008.9
Abstract Solvatochromic behavior of some 4,4′-substituted azoaromatic derivatives has been investigated in solvents of different polarities. The solvent dependent UV/vis spectral shifts, ν max, were analyzed using some physical parameters such as refractive index, dielectric constant, Kamlet–Taft parameters α (hydrogen bond donating ability) and β (hydrogen bond accepting ability). The intermolecular
solutions of three azo-benzene derivatives (ADi, i=1, 2, 3) were established by solvatochromic effects in solvents with different electric permittivities, refractive indices and Kamlet-Taft constants. A quantum mechanical analysis corroborated with spectral data offered information about the excited state dipolemoments and polarizabilities of the studied compounds. The separation of the supply of universal