Symposium Schedule
Ralph & Helen Oesper Symposium
Friday, October 25, 2024
9:00 AM
400-B Tangeman University Center (TUC)
| Time | Speaker |
|---|---|
| 9:05 | Michael Baldwin Interim Head, Dept. of Chemsitry, University of Cincinnati Welcome and Introductory remarks |
| Session Chair: Yujie Sun | |
| 9:15 | Jeffrey Rack, University of New Mexico "A New Look at the Magneto-Optical Activity of Metalloporphyrins" |
| 10:00 | Jeremy Kodanko, Wayne State University "Ruthenium-Based Agents for Light Activated Metalloimmunotherapy" |
| 10:45 | Amanda Morris, Virginia Tech "Photons, Electric Fields, and Defects, Oh my!: New Design Principles for MOF Photocatalysis" |
| Lunch 11:30 | |
| Session Chair: Anna Gudmundsdottir | |
| 1:15 | Joel Rosenthal, University of Delaware "Establishing All Earth Abundant Multimetallic Nanomaterials as Privileged Electrocatalysts for H2 Evolution under Alkaline Conditions" |
| 2:00 | Felix Castellano, North Carolina State University "Steric and Electronic Influence of Excited State Decay in Cu(I) MLCT Chromophores" |
| 2:45 | Anne Co, The Ohio State University "Probing CO2 Electroreduction Mechanism Using Rotating Ring Disc Electrode" |
| 3:30 Break | |
| Session Chair: Yujie Sun | |
| 3:45 | James McCusker, Michigan State University "Using Variable-temperature Ultrafast Spectroscopy to Probe the Excited-state Dynamics of Transition Metal-based Chromophores" |
| 4:30 | Claudia Turro, Ohio State University “Excited States of Transition Metal Complexes for Applications in Solar Energy and Photochemotherapy” Abstract. Molecules that absorb visible light may use this energy provided photons to access reactions not possible from their ground electronic states. These excited state molecules can serve in applications that include sensors, energy conversion schemes, and photomedicine. The use of light to activate the action of a drug has become important as mode of cancer therapy because it is significantly less invasive and poses low levels of systemic toxicity to the patient, thus reducing undesirable side effects. Photoinduced ligand exchange is able to release drugs with spatiotemporal control which, together with the production of cytotoxic species, represent important reactions initiated by light with potential applications in photochemotherapy (PCT). These photoinduced reactions will be presented, along with their activity towards biological targets and cancer cells. The search for renewable, clean sources of energy is critical for the future of the planet. The use of abundant sunlight to generate electricity or to efficiently and catalytically transform inexpensive simple molecules into clean fuels, such as hydrogen from water, remains a challenge. Systems for efficient conversion of sunlight into chemical fuels require strong light absorption that is well-matched to the solar spectrum, catalysts that affect the desired transformation, followed by combining the light absorber (LA) with the catalyst (CAT) into functional LA-CAT architectures. We have developed new complexes that serve as dyes that absorb light strongly throughout the visible region and into the near-IR. These compounds are able to act as single-molecule photocatalysts for the production of hydrogen with red light. The role of the molecular structure and metal-metal distance on the excited state properties will be discussed. |
| 5:30-6:45 | Poster Session & Reception in TUC Great Hall |
| 6:50-7:00 | P&G announcement and presentation of awards to the best poster presenters (innovative work, inventive work & clearly presented & communicated work) |
| 7:00 | Banquet in TUC Great Hall |
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| 8:00 |
ACS Business followed by after-dinner speaker, Daniel G. Nocera, Patterson Rockwood Professor of Energy, Dept. of Chemistry & Chemical Biology, Harvard University Abstract. Oesper Awardee, Claudia Turro, was in on the ground floor of the creation of proton-coupled electron transfer (PCET), as one of the first to define the kinetics of an electron transfer relative to the proton. Claudia’s early contribution to PCET was a springboard for the discovery of three energy systems: (1) The Coordination Chemistry Flow Battery (CCFB) is the largest commercial grid storage battery of renewable electricity in the world today. (2) The Artificial Leaf is the first wireless device to accomplish the solar fuels process of natural photosynthesis—the splitting of water to hydrogen and oxygen using sunlight—under ambient conditions. (3) The Bionic Leaf (C and N) are engineered microorganisms that combine renewable hydrogen with carbon dioxide from air to make biomass or liquid fuels or with nitrogen from air to make a living biofertilizer. These three discoveries, and how they relate to Claudia’s original work will be presented. Bio. Daniel G. Nocera is the Patterson Rockwood Professor of Energy at Harvard University. Nocera is recognized for his discoveries in renewable energy, originating new paradigms that have defined the field of solar energy conversion and storage. Nocera created the field of proton coupled electron transfer (PCET) at a mechanistic level by making the first measurement that allowed an electron and proton to be timed and on this experimental foundation, he provided the first PCET theory. Within this framework, he is the inventor of the Artificial Leaf and the Bionic Leaf. He is a member of the American Philosophical Society, American Academy of Arts and Sciences, the U.S. National Academy of Sciences and the Indian Academy of Sciences. He was named as Time Magazine’s 100 Most Influential People in the World and was 11th on the New Statesman’s list on the same topic. He founded Sun Catalytix, which was acquired by Lockheed Martin, to result in the development of the largest flow battery in the world for grid storage and founded Kula Bio for the commercialization of a living biofertilizer for sustainable farming. |