The solvatochromic shift of a molecular fluorophore is the change in the absorption and emission spectra and is caused by the dipole interactions that take place between it and the solvent. Rhodamine-6G (R6G) was used because it is a good example of a molecular fluorophore that exhibits this phenomena. In most organic solutions, Rhodamine-6G becomes aqueous and acts similar to a salt. forming an organic ionic molecule and an ionized Chlorine atom. This ionic molecule is affected by the polarity of the solution into which it is dissolved.
To better understand the solvatochromic shifting of Rhodamine-6G, the dipole interactions must be further researched. This can be done by measuring R6G spectra of different solutions and calculating the Stokes Shift. The Stokes Shift is the difference between the peak absorption wavelength and peak emission wavelength. These peaks allow for the calculation of the dipole moments in each solution. There are several methods to determine dipole moments and change in dipole moments. The most commonly used methods were developed by Lippert-Malaga,
Bakhs.h..ie. v, Catalan, Kamlet-Taft, Reichardt, and Bilot-Kawski.
Student Scholar Symposium & Faculty Research Showcase (University of West Florida, Pensacola, Florida, 2021)
Contributors
Dr. Aaron Wade (Faculty Mentor)
Dr. Chandra Prayaga (Faculty Mentor)
Publisher
University of West Florida Libraries; Argo Scholar Commons
Format
1 file; .pdf
Copyright
Permission granted to the University of West Florida Libraries to digitize and/or display this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires the permission of the copyright holder.
Identifiers
99380090877806600
Academic Unit
Office of Undergraduate Research; 2021 Student Scholars Symposium and Faculty Research Showcase; Hal Marcus College of Science and Engineering ; Physics