Abstract
The cationic halochromism of phenolate betaines was reproduced with the aid of a simple theoretical model, by calculation of the longest wavelength transition energies of supermolecules obtained by positioning a cation Mn+ at a variable distance from the oxygen atom of the dye. The theoretical results were compared with experimental data for three systems, Reichardt’s betaine 1, Brooker’s merocyanine 2 and the N-methyl-8-oxyquinolinium dye 3. The model was validated by molecular dynamics simulations of solutions of dye 3, in methanol and DMSO, in the presence of variable concentrations of Na+.
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Domínguez, M., Rezende, M.C. The cationic halochromism of phenolate betaines: Molecular dynamics and quantum mechanics studies. JICS 7, 995–1003 (2010). https://doi.org/10.1007/BF03246096
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DOI: https://doi.org/10.1007/BF03246096