3774-14-9Relevant academic research and scientific papers
Effects of Spacers on Photoinduced Reversible Solid-to-Liquid Transitions of Azobenzene-Containing Polymers
Weis, Philipp,Hess, Andreas,Kircher, Gunnar,Huang, Shilin,Auernhammer, Günter K.,Koynov, Kaloian,Butt, Hans-Jürgen,Wu, Si
, p. 10946 - 10953 (2019)
Photoisomerization in some azobenzene-containing polymers (azopolymers) results in reversible solid-to-liquid transitions because trans- and cis-azopolymers have different glass transition temperatures. This property enables photoinduced healing and proce
About intermolecular interactions in binary and ternary solutions of some azo-benzene derivatives
Ivan, Liliana Mihaela,Closca, Valentina,Burlea, Marin,Rusu, Elena,Airinei, Anton,Dorohoi, Dana Ortansa
, p. 2008 - 2014 (2015/03/30)
The nature and strength of the intermolecular interactions in the 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 dipole moments and polarizabilities of the studied compounds. The separation of the supply of universal and specific interactions to the total spectral shift was made based on the regression coefficients from the equations describing the solvatochromic effect. Supplementary information about the composition of the first solvation shell and the energy in the solute-solvent molecular pairs were obtained analyzing the ternary solutions of ADi, i = 1, 2, 3 compounds in solvent mixture Methanol (M) + n-Hexane (H).
Solvatochromic effects in the absorption spectra of some azobenzene compounds
Rusu, Elena,Dorohoi, Dana-Ortansa,Airinei, Anton
experimental part, p. 216 - 219 (2009/02/06)
Solvatochromic behavior of some 4,4′-substituted azoaromatic derivatives has been investigated in solvents of different polarities. The solvent dependent UV/vis spectral shifts, νmax, 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 interaction types in the azobenzene derivatives solutions were established on the basis of a multiple linear regression analysis. The fitting coefficients obtained from this analysis allowed us to estimate the contribution of each type of interactions to the total spectral shift in the studied solutions.
