scholarly journals Solvent Effects on the Solvatochromism of 7-Aminocoumarin Derivatives in Neat and Binary Solvent Mixtures: Correlation of the Electronic Transition Energies with the Solvent Polarity Parameters

2009 ◽  
Vol 30 (7) ◽  
pp. 1452-1458 ◽  
Keyword(s):  
Solvent Effects ◽  
Electronic Transition ◽  
Solvent Polarity ◽  
Binary Solvent ◽  
Solvent Mixtures ◽  
Transition Energies ◽  
Binary Solvent Mixtures ◽  
Electronic Transition Energies ◽  
Polarity Parameters

Characterization of Alcohol Solvents by the Empirical Polarity Parameters AN, Z, and ET(30)

1982 ◽  
Vol 37 (6) ◽  
pp. 684-687 ◽  
Author(s):  
Horst Elias ◽  
Michael Dreher ◽  
Sabine Neitzel ◽  
Harald Volz
Keyword(s):  
Benzyl Alcohol ◽  
Solvent Effects ◽  
Binary Solvent ◽  
Solvent Mixtures ◽  
Acceptor Number ◽  
Binary Solvent Mixtures ◽  
Alcohol Solvents ◽  
Polarity Parameters

AbstractThe acceptor number AN and the polarity parameters Z and ET(30) were determined for a series of alcohols applied as media in the study of kinetic solvent effects. The alcohols thus characterized are methanol, ethanol, 1-propanol, 1-butanol, 2-butanol, 2-methyl-2-butanol, 3-pentanol, 2-chloroethanol, 2-methoxyethanol, 2-phenylethanol, 2-cyanoethanol, benzyl alcohol, 3-ethyl-3-pentanol, 2,4-dimethyl-3-pentanol, and 3-ethyl-2,4-dimetliyl-3-pentanol. In addition, AN was determined for 1,2-dichloroethane and Z for the binary solvent mixtures methanol/2-methyl-2-butanol, ethanol/2,2,2-trifluoroethanol. and methanol/pyridine. The data obtained are correlated and the parameters AN, Z, and ET(30) are critically compared.

Role of solvent polarity on fluorescence quenching of 3MOCE in binary solvent mixtures

2020 ◽  
Author(s):  
S. Vaijayanthimala ◽  
Kalpana Sharma ◽  
Raveendra Melavanki ◽  
P. Bhavya ◽  
U. Meghana ◽  
...  
Keyword(s):  
Fluorescence Quenching ◽  
Solvent Polarity ◽  
Binary Solvent ◽  
Solvent Mixtures ◽  
Binary Solvent Mixtures ◽  
Role Of Solvent

scholarly journals Probing Solvation Effects in Binary Solvent Mixtures with the Use of Solvatochromic Dyes

2021 ◽  
Author(s):  
Ioanna Deligkiozi ◽  
Raffaello Papadakis
Keyword(s):  
Preferential Solvation ◽  
Solvent Polarity ◽  
Binary Solvent ◽  
Solvent Mixtures ◽  
Two Phase ◽  
Binary Solvent Mixtures ◽  
The Third ◽  
Beta Cyclodextrin ◽  
High Responsiveness ◽  
Linear Solvation

In this work three molecules exhibiting dual sensing solvatochromic behaviors are examined in the context of solvation in binary solvent mixtures (BSMs). The compounds studied involve two functional groups with high responsiveness to solvent polarity namely pentacyanoferrate(II) (PC) and azo groups. Two of these compounds are [2]rotaxanes involving alpha- or beta- cyclodextrin (CyD) and the third is their CyD-free precursor. The dual solvatochromic behavior of these compounds is investigated in water/ethlylene glycol (EG) mixtures and their dual solvatochromic responses are assessed in terms of the intensity of solvatochromism and the extent of preferential solvation. To achieve this the linear solvation model by Kamlet, Abboud and Taft [J. Organomet. Chem. 1983, 48, 2877–2887] and the two-phase model of solvation by Bagchi and coworkers [J. Phys. Chem. 1991, 95, 3311–3314] are employed. The influence of the presence or lack of CyD (alpha- or beta-) on these dual solvatochromic sensors is analyzed.

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