Outline

8/1/2016

Title: Development of a Low Frequency EPR Spectral Library of Pigments

Background: (3 slides, ~ 2 minutes)
• Define EPR, maybe include a picture of our spectrometer
• Why we are using low frequency EPR
• What the graphs can tell us i.e. their applications

Theory: (3 slides, ~ 4 minutes)
• Spinning e- = magnet. There are transitions between the two energy levels
• Graph of E as function of B – audience will see as B increases, energy difference increases. Explain that the graph is different for different substances
• Explain that when input energy matches the energy difference, there is the max amount of transitions. Our spectrometer measures how many transitions there are.

Results: (8 pages, ~ 5 minutes)
• Each page is devoted to a pigment. Compare spectra from different frequency, if applicable

• Include pictures of each pigment in the test tubes
• include graphs of each pigment

Conclusion (~ 2 mins)

Questions & Answers ( ~ 5 mins)

Total: ~18 mins