Coumarin 153 emission thermochromism studied in non-specifically and specifically interacting solvents

Emerging ground and excited state dipole moments and external electric field effect on electronic structure. A solvatochromism and theoretical study on 2-((phenylimino)methyl)phenol derivatives

“…F Lippert-Mataga [40], F Bakhshiev [41], and F Kawski-Chamma-Viallet [42,43] are solvent polarity functions and are given as:…”

Estimation of ground and excited states dipole moments of α-hydroxy phenyl hydrazone derivatives: Experimental and quantum chemical methods

“…F Lippert-Mataga [22], F Bakhshiev [23], and F Kawski-Chamma-Viallet [24,25] are solvent polarity functions and are given as:…”

Temperature effect on 4-aminophtalimide fluorescence in n-alcohols

“…So the question appears as to the contribution of H-bonding to the emission shift. We calculated this contribution the same way as in our earlier papers [7,9]. Similarly as in our previous results, the temperature dependence of this contribution, Δν HB , is related to the length of the chain in the n-alcohol used.…”

“…Even in the simplest systems that reveal thermochromic shifts a complicated nature of this process is evident, which has been illustrated e.g. by Bakhshiev et al [4], Suppan et al [5], El Seoud et al [6], or us [7][8][9][10][11][12]. Thermochromic shifts follow from changes in the energy of non-specific interactions that take place between the solutes and solvent molecules, while temperature changes.…”

“…If it is not the solute hydrogen accepting ability that changes with temperature in protic solvents, but the donating ability of these solvents, then why Δν HB (T) dependencies have so different slopes in the solvents used so far (see Refs. [7,9]). For instance, a comparison of Δν HB (T) for 4-AP in TFEtOH and HFIP shows that in the latter solvent Δν HB changes much more significantly with temperature.…”