1. Fluorescence of Matrix-Isolated Biacetyl Erin Gatrone Nathan Kuchmas C.A. Baumann University of Scranton Department of Chemistry

2. Background Irradiation (520nm>λ>485nm) results in a variety of products – methylhydroxycarbene (CH 3 COH) – ketene (CH 2 CO) The wavelength suggests a multiphoton process

3. Photoproducts h Previous work in this group has shown that one of the photolytic pathways in the matrix is a complex between ketene and cis methylhydroxycarbene

4. Experimental Outline Reagent:Matrix Ratio (~1:1000) – Reagent Biacetyl (C 4 H 6 O 2 ) Deuterated Biacetyl (C 4 D 6 O 2 ) – Matrix N 2, O 2, Kr, Ar Argon Ion Laser 514nm 488nm Irradiation – 1 hour – 0.1W to 1.0W IR Spectra – 100 Scans at 1cm -1

8. Biacetyl Energy Levels

10. Experimental Outline Reagent:Matrix Ratio (~1:1000) – Reagent Biacetyl (C 4 H 6 O 2 ) Deuterated Biacetyl (C 4 D 6 O 2 ) – Matrix N 2, Kr Argon Ion Laser 514nm 488nm Irradiation –.1W to.4W Collection with Monochromator – Acton Spectra Pro 2300i -.3m Imaging Triple Grating Monochromator/Spectragraph

11. Irradiation Laser

12. Mirror Monochromator Focusing Lens Interference Filter

14. Biacetyl Energy Levels

18. Future Experiments Deuterated biacety and biacetyl in: – Krypton – Argon – Nitrogen Determine the lifetimes of the emissions

19. Acknowledgements David A. Rusak, Ph.D National Science Foundation Petroleum Research Fund