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Preferential solvation through selective functional group recognition in p-nitroaniline

Paper ID Volume ID Publish Year Pages File Format Full-Text
28802 44093 2011 8 PDF Available
Title
Preferential solvation through selective functional group recognition in p-nitroaniline
Abstract

The solvatochromism of the charge transfer band of p-nitroaniline (PNA) in different binary solvent mixtures has been investigated from the spectroscopic transition energy (TE). The solvation is proposed to be localized due to the donor and acceptor group and the preference of one solvent above other is due to hydrogen bonding. The preferential solvation has been characterized from the trilinearity of molefraction–TE curves of the binary mixtures. In alcohol–dioxane mixtures, dioxane prefers to solvate amino group while the alcohols preferentially solvate the nitro group through hydrogen bonding. The IR spectral characteristics of PNA in dioxane and butanol also support the preferential solvation model. The thermodynamic parameters have been determined for the solvation process.

Graphical abstractIn alcohol–dioxane binary mixture, the solvation of p-nitroaniline is due to functional group recognition where nitro group is preferentially solvated by alcohol while the amino group is preferentially solvated by dioxane.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Solvatochromism; Preferential solvation; UV–Vis spectroscopy; Functional group recognition; Donor–acceptor systems; Binary solvent mixture
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 219, Issue 1, 5 March 2011, Pages 76–83
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us