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A novel surfactant-like fluorophore and its probing ability to the aggregation of amphiphilic compounds

Paper ID Volume ID Publish Year Pages File Format Full-Text
26231 43941 2012 8 PDF Available
Title
A novel surfactant-like fluorophore and its probing ability to the aggregation of amphiphilic compounds
Abstract

A novel surfactant-like non-ionic fluorophore, 3-(bis(2-hydroxyethyl)amino)-N-(4-(pyrene-1-sulfonamido)butyl) propanamide (PSDA-DEA), was designed and prepared. Fluorescence and surface tension studies revealed that the fluorophore aggregates in aqueous medium, and its critical aggregation concentration (CAC) is ∼3.3 × 10−5 M. Cryogenic transmission electron microscopy (cryo-TEM), dynamic light scattering (DLS) and atomic force microscopy (AFM) measurements demonstrated that the diameter of the aggregates as formed is of a few hundred nano-meters. It was also shown that the profile of the emission spectrum of the compound is well dependent upon the polarity of its medium, as indicated by a change up to 53% of its intensity ratio at 399 nm and 380 nm (I399/I380) when the solvent changed from water to ethanol. It is of the polarity sensitive property that the fluorophore can be used for monitoring micelle formation of several anionic, cationic and non-ionic surfactants. Furthermore, PSDA-DEA is also a valuable probe for sensing transition of different aggregates such as micelles to vesicles. Comparative studies demonstrated that the present probe is more versatile than pyrene when it is used as a fluorescence probe.

Graphical abstractThe applications of a newly synthesized surfactant-like fluorophore in the transition of the aggregates of amphiphilic compounds, especially between micelles and vesicles, were investigated systematically by using the compound as a probe.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Prepared a novel surfactant-like non-ionic fluorophore. ► Studied the aggregation behavior of the fluorophore in aqueous phase. ► Monitored the transition between different surfactant aggregates. ► The compound is more powerful fluorescent probe than known probes.

Keywords
Fluorescence probe; Surfactant; Aggregation; Pyrene
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A novel surfactant-like fluorophore and its probing ability to the aggregation of amphiphilic compounds
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 245, 1 October 2012, Pages 58–65
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