CHED 860 |
| Nicholas J. Turro, Department of Chemistry, Columbia University, Havemeyer Hall, MC 3119, New York, NY 10027, Allison Tease, Claremont McKenna College, 742 N. Amherst Ave., Story House, Claremont, CA 91711, Tracy Morkin, Department of Chemistry, Emory University, 208 Atwood Hall, Atlanta, GA 30322, and Thomas Poon, Joint Science Department, Claremont McKenna, Pitzer, and Scripps Colleges, W.M. Keck Science Center, 925 N. Mills Ave., Claremont, CA 91711. |
| Zeolites are a class of aluminosilicates that have proven to be a unique reaction space for a wide variety of photoinduced electron transfer reactions. Irradiation of biphenyl in the channels of ZSM-5 zeolites produces the biphenyl radical cation (BP·+), and EPR experiments show that this species is stable in the zeolite environment for several hours. If irradiated at 254 nm, the BP·+@ZSM-5 appears to “glow” for several seconds after the light source is shut off. In an effort to learn more about this novel observation and the unique photophysical and photochemical processes that occur in a rigid zeolite framework, we have compared the absorption and emission spectroscopy of biphenyl in solution with biphenyl @ M+-ZSM-5, where M=H, Li, Na, K. Furthermore, we have also examined this system as a function of the zeolite silicon:aluminum ratio. |
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Undergraduate Research Poster Session: Organic Chemistry
2:00 PM-4:00 PM, Monday, March 29, 2004 Anaheim Convention Center -- Hall A, Poster
Division of Chemical Education |