This project extends previous studies of the spectroscopic and photophysical properties of 2,5-diarylidene cyclopentanones. The focus of this research is (2E,5E)-2-benzylidene-5-(p-dimethylaminocinnamylidene)-cyclopentanone (bdmac). Absorbance and fluorescence spectra in various solvents show that maxima undergo bathochromic shifts with increasing solvent polarity. Fluorescence quantum yields and lifetimes of also vary with solvent polarity. First-order radiative and non-radiative decay constants were calculated. Geometry optimization and TD-DFT spectral calculations revealed the internal charge transfer nature of bdmac. Results were compared to data for (2E,5E)-2-(p-dimethylaminobenzylidene)-5-(p-dimethylaminocinnamylidene)-cyclopentanone (Ashrbor), a similar compound.

• This report represents the work of one or more WPI undergraduate students submitted to the faculty as evidence of completion of a degree requirement. WPI routinely publishes these reports on its website without editorial or peer review.

Creator

• DiIorio, Cara Lynn

Contributors

• Movarek, Paula

Publisher

• Worcester Polytechnic Institute

Identifier

• E-project-042413-162940

Advisor

• Connors, Robert E.

Year

• 2013

Date created

• 2013-04-24

Resource type

• Major Qualifying Project

Major

• Chemistry

Rights statement

• In Copyright