Spectrochemical Investigation of Preferential Solvation. 2. Compatibility of Thermodynamic Models versus Spectrofluorometric Probe Methods for Tautomeric Solutes Dissolved in Binary Mixtures

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Article discussing spectrochemical investigations of preferential solvation and the compatibility of thermodynamic models versus spectrofluorometric probe methods for tautomeric solutes dissolved in binary mixtures.

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8 p.

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Acree, William E. (William Eugene); Wilkins, Denise C.; Tucker, Sheryl A. (Sheryl Ann); Griffin, Jason M. & Powell, Joyce R. March 1, 1994.

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Article discussing spectrochemical investigations of preferential solvation and the compatibility of thermodynamic models versus spectrofluorometric probe methods for tautomeric solutes dissolved in binary mixtures.

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8 p.

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Abstract: Two previously developed spectrovluorometric probe methods are critically examined regarding their ability to model preferential solvation around probe molecules dissolved in binary solvents. The first method assumes that each fluorophore is solvated by only one type of solvent molecule and that the observed spectral wavelength shift results from additivity of emission spectrum for the two solvational fluorophore species. The second method treats the solvational sphere as a binary solvent microphase, with the fluorophore's energy in both the ground and excited states mathematically expressed in terms of the "nearly ideal binary solvent" (NIBS) model. Expressions derived from each model are illustrated using observed fluorescence emission behavior of 9,9'-bianthracene and 9,9'-bianthracene-10-carboxaldehyde dissolved in binary toluene + acetonitrile and dibutyl ether + acetonitrile mixtures, which were measured as part of the present study. Also discussed is the compatibility of the inherent assumptions upon which the various spectrofluorometric probe methods are based, versus the thermodynamic principles that govern the conformational equilibria responsible for the observed solvatochromic behavior.

Reprinted with permission from the Journal of Physical Chemistry. Copyright 1994 American Chemical Society.

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  • Journal of Physical Chemistry, 1994, Washington DC: American Chemical Society, pp. 2537-2544

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  • Publication Title: Journal of Physical Chemistry
  • Volume: 98
  • Issue: 10
  • Page Start: 2537
  • Page End: 2544
  • Peer Reviewed: Yes

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  • March 1, 1994

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  • July 18, 2014, 11:30 a.m.

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  • Oct. 7, 2015, 1:36 p.m.

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Acree, William E. (William Eugene); Wilkins, Denise C.; Tucker, Sheryl A. (Sheryl Ann); Griffin, Jason M. & Powell, Joyce R. Spectrochemical Investigation of Preferential Solvation. 2. Compatibility of Thermodynamic Models versus Spectrofluorometric Probe Methods for Tautomeric Solutes Dissolved in Binary Mixtures, article, March 1, 1994; [Washington, D.C.]. (digital.library.unt.edu/ark:/67531/metadc307071/: accessed April 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Arts and Sciences.