Solute-centric versus indicator-centric solvent polarity parameters in binary solvent mixtures. Determining the contribution of local solvent basicity to the solvatochromism of a pentacyanoferrate(II) dye

2017 ◽  
Vol 241 ◽  
pp. 211-221 ◽  
Author(s):  
Raffaello Papadakis
Keyword(s):  
Solvent Polarity ◽  
Binary Solvent ◽  
Solvent Mixtures ◽  
Binary Solvent Mixtures ◽  
Solvent Basicity ◽  
Polarity Parameters

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

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.

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.

Effect of Solvent Polarity on the Fluorescence Quenching of Biologically Active 5BAMC by Aniline in Binary Solvent Mixtures

2010 ◽  
Vol 20 (6) ◽  
pp. 1175-1180 ◽  
Author(s):  
Raveendra M. Melavanki ◽  
Raviraj A. Kusanur ◽  
Jagadish S. Kadadevaramath ◽  
Manohar V. Kulkarni
Keyword(s):  
Fluorescence Quenching ◽  
Solvent Polarity ◽  
Biologically Active ◽  
Binary Solvent ◽  
Solvent Mixtures ◽  
Binary Solvent Mixtures ◽  
Effect Of Solvent

Empirical polarity parameters for some binary solvent mixtures

1981 ◽  
Vol 34 (5) ◽  
pp. 933 ◽  
Author(s):  
S Balakrishnan ◽  
AJ Easteal
Keyword(s):  
Solvent Polarity ◽  
The Other ◽  
Binary Solvent ◽  
Solvent Mixtures ◽  
Additive Functions ◽  
Binary Solvent Systems ◽  
Solvent Systems ◽  
Highly Correlated ◽  
Ethanol Ethanol ◽  
Polarity Parameters

Values of the empirical solvent polarity parameters ET and Z have been determined as a function of composition for the binary solvent systems 1,2-dibromoethane + 1,2-dibromopropane, acetone + chloroform, acetone + ethanol, ethanol + chloroform and acetone + dichloromethane. For the 1,2-dibromoethane + 1,2-dibromopropane system both ET and Z are accurately linear (i.e. additive) functions of composition. For the other systems both parameters vary with composition in a strongly non-additive manner, and the deviations from additivity are interpreted in terms of intermolecular interactions. For these systems, in general ET and Z are not highly correlated, and neither parameter is highly correlated with other macroscopic properties or parameters derived from them.

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