معرفی
Marsha I. Lester is the Christopher H. Browne Distinguished Professor of Chemistry at the University of Pennsylvania's School of Arts & Sciences. Her research focuses on reaction intermediates in atmospheric chemistry, particularly Criegee intermediates critical to OH radical production. She has held leadership roles, including Chair of the Department of Chemistry (until 2009) and Editor-in-Chief of The Journal of Chemical Physics (2009–2018). Lester’s awards include membership in the National Academy of Sciences and the American Academy of Arts & Sciences, alongside prestigious prizes like the Herbert P. Broida Prize and Garvan-Olin Medal. Her work employs advanced spectroscopic techniques (e.g., IR action spectroscopy, velocity map imaging) to study molecular dynamics in environmental reactions.
Her research group investigates Criegee intermediates' roles in ozone depletion pathways,烷烃氧化, and combustion chemistry. Key contributions include characterizing intermediates from isoprene ozonolysis and revealing roaming mechanisms in hydrocarbon reactions. Funding sources include the National Science Foundation and U.S. Department of Energy. Her lab’s techniques include UV-Vis spectroscopy, VUV photoionization, and flow-cell kinetics. Recent recognition includes a Festschrift in Journal of Physical Chemistry A (2024) and establishment of the Marsha I. Lester Award (2022).
