Solvent Effects on the Spectroscopy of Dyes

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dc.contributor.author Barkley, Rachel M.
dc.contributor.author Hurley, Carly E.
dc.contributor.author Johnson, Ryan T.
dc.contributor.author Nkrumah-Agyeefi, Samuel
dc.contributor.author Wildgen, Sarah M.
dc.date.accessioned 2009-04-20T16:22:26Z
dc.date.available 2009-04-20T16:22:26Z
dc.date.issued 2009-04-20T16:22:26Z
dc.identifier.uri http://hdl.handle.net/2092/893
dc.description Advisor: Mark F. Vitha en_US
dc.description.abstract Linear solvation energy relationships (LSERs) were used to quantify the intermolecular interactions between solvents and two organic dyes - di-8-ANEPPS and RH-237. LSERs evaluate the sensitivity of a dye's wavelength of maximum absorbance or emission to solvent acidity (alpha), basicity (beta), polarity/polarizability (pi*), and excess polarizability (delta). The quantification of the sensitivity of a dye to these parameters (alpha, beta, pi*, and delta) allows for the characterization of the dye's ability to interact through dipole-dipole, dispersion, and hydrogen bonding interactions. To develop these relationships required the use of UV -visible and fluorescence spectroscopy to measure the wavelengths of maximum absorbance and emission of the dyes. The results of di-8-ANEPPS show that solvent basicity, acidity and polarity/polarizability affect the spectroscopy of the dye, meaning di-8-ANEPPS is polar and can accept and donate hydrogen bonds in solution. Similar results were found for RH-237. The results, however, are difficult to interpret because nonpolar solvents could not be incorporated in the LSERs due to solubility limitations. Work is currently in progress on Coumarin 30. The long-term goal of the research is to use the dyes to study surfactants in order to enhance oil recovery from reservoirs. en_US
dc.description.sponsorship Drake University, College of Arts and Sciences, Department of Chemistry en_US
dc.language.iso en_US en_US
dc.relation.ispartofseries DUCURS 2009;12
dc.subject Solvents en_US
dc.subject Spectroscopy en_US
dc.subject Dyes en_US
dc.subject Fluorescence spectroscopy en_US
dc.subject Polarizability (Electricity) en_US
dc.title Solvent Effects on the Spectroscopy of Dyes en_US
dc.type Presentation en_US


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  • DUCURS [196]
    Poster sessions and presentation from the Drake University Conference on Undergraduate Research in the Sciences held each April at Olmsted Center on the Drake campus.

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