Title

Conjugated Dye in Charged Environments

Poster Number

18

Format

Poster Presentation

Faculty Mentor Name

Sylvio Rodriguez

Abstract/Artist Statement

We study the aggregation of a conjugated organic dye in aqueous solutions of different ionic strengths as a function of temperature. These experiments are important for many reasons, including their application as fluorescent cellular tags. However, the aggregation of such dyes convolutes their molecular absorbance spectrum and, thus, their effectiveness as biological markers. The thermodynamics of aggregation (t.G, the driving force; t.H, the heat of reaction; and t.S, the possibility of converting any heat given-off in a reaction into useful work for the system) yields clues about the types of interactions causing this reaction. This data allows for better characterization of such compounds so as to improve their function in a number of charged environments. A Varian Cary Bio UV-Visible spectrophotometer and DATAN (DATa Analysis) 3.1 software package were used to study the spectra.

Location

Wendell Phillips Center, 1st floor hallways

Start Date

3-5-2008 1:00 PM

End Date

3-5-2008 3:00 PM

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May 3rd, 1:00 PM May 3rd, 3:00 PM

Conjugated Dye in Charged Environments

Wendell Phillips Center, 1st floor hallways

We study the aggregation of a conjugated organic dye in aqueous solutions of different ionic strengths as a function of temperature. These experiments are important for many reasons, including their application as fluorescent cellular tags. However, the aggregation of such dyes convolutes their molecular absorbance spectrum and, thus, their effectiveness as biological markers. The thermodynamics of aggregation (t.G, the driving force; t.H, the heat of reaction; and t.S, the possibility of converting any heat given-off in a reaction into useful work for the system) yields clues about the types of interactions causing this reaction. This data allows for better characterization of such compounds so as to improve their function in a number of charged environments. A Varian Cary Bio UV-Visible spectrophotometer and DATAN (DATa Analysis) 3.1 software package were used to study the spectra.