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Chemical Science Vol - 1 Issue - 1

The role of functional group concentration in solvation thermodynamics

Content Provider	Royal Society of Chemistry (RSC)
Author	Buurma, Niklaas J. Cook, Joanne L. Low, Caroline M. R. Hunter, Christopher A. Vinter, Jeremy G.
Copyright Year	2010
Abstract	High throughput experiments using a molecular recognition probe reveal a simple relationship between solvent functional group concentration and selective solvation. The 1 : 1 association constant for the H-bonding interaction between tri-n-butylphosphine oxide and 4-phenylazophenol was measured in 1088 different alkane–ether mixtures using a UV-Vis plate reader. Although the stability of the complex decreased with increasing concentration of the more polar ether cosolvent as expected, the results show that it is the functional group composition rather than the constitution of the solvent molecules or the properties of the bulk liquid that determines the solvation thermodynamics. Thus the solvent properties of a simple ether can be reproduced by an appropriate mixture of a polyether and an alkane that has the same net concentration of ether oxygen functional groups. The results suggest that solvation may be understood at the molecular level simply by considering the polarities and the concentrations of the functional groups present in the solvent, because these are the parameters that affect local solvation interactions with the solutes.
Starting Page	242
Ending Page	246
Page Count	5
File Format	HTM / HTML PDF
ISSN	20416520
Volume Number	1
Issue Number	2
Journal	Chemical Science
DOI	10.1039/c0sc00209g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Oxygen Solvation Ether Binding constant Molecular recognition Solvent Functional group
Content Type	Text
Resource Type	Article
Subject	Chemistry

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