{ "151930-21912476": { "datetime_modified":"20260928T140340", "datetime_start":"20261020T160000", "datetime_end":"20261020T171500", "has_end_time":1, "date_start":"2026-10-20", "date_end":"2026-10-20", "time_start":"16:00:00", "time_end":"17:15:00", "time_zone":"America\/Detroit", "event_title":"Mechanistic Insights into Metal-Protein Interactions: Implications for Neurodegenerative Disease Progression and Intervention", "occurrence_title":"", "combined_title":"Mechanistic Insights into Metal-Protein Interactions: Implications for Neurodegenerative Disease Progression and Intervention: Katlyn Meier | University of Miami", "event_subtitle":"Katlyn Meier | University of Miami", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Elevated levels of protein expression and aberrant metal exposure have been reported in many neurodegenerative diseases, including Huntington\u2019s Disease (HD). While there is currently no cure for HD, metal chelation therapies have been shown to assuage disease symptoms including chorea. These observations underscore the critical need to understand how metal-protein interactions are involved in disease pathogenesis. Our objective in this work is to elucidate the role of copper (Cu) and other biorelevant metals in HD and, more specifically, their interactions with the huntingtin protein (htt). We aimed to characterize the Cu-htt interaction and speciation trends in our in vitro HD system, as well as the influence of disease-relevant Cu concentrations on protein oligomerization\/aggregation both in vitro and in vivo. We utilized multiple spectroscopic techniques (circular dichroism, electron paramagnetic resonance, UV-Vis absorption, dynamic light scattering, and mass spectrometry) that cover a broad range of energy scales, allowing us to characterize protein structure at the molecular, secondary structure, and quaternary structure levels. Additionally, site-directed mutagenesis of several putative metal binding residues was used to define the roles of specific amino acids in mediating oligomerization\/aggregation, metal binding, and redox chemistry. Taken together, our work has led to the first report of multiple copper binding sites in non-pathological htt and provides insight into one pathway for depletion of native htt pools that may contribute to HD.", "occurrence_notes":null, "guid":"151930-21912476@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/151930", "building_id":"1000158", "building_name":"Chemistry Dow Lab", "campus_maps_id":"34", "room":"CHEM 1640", "location_name":"Chemistry Dow Lab", "has_livestream":0, "cost":"", "tags":["Inorganic Chemistry","Chemistry"], "website":"https:\/\/people.miami.edu\/profile\/32b13cd7579d572e6216b4ff90380b5f", "sponsors":[ { "group_name":"Department of Chemistry", "group_id":"3761", "website":"https:\/\/lsa.umich.edu\/chem" } ], "image_url":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "occurrence_count":1, "first_occurrence":21912476 } , "148611-21904525": { "datetime_modified":"20260930T163217", "datetime_start":"20261022T110000", "datetime_end":"20261022T120000", "has_end_time":1, "date_start":"2026-10-22", "date_end":"2026-10-22", "time_start":"11:00:00", "time_end":"12:00:00", "time_zone":"America\/Detroit", "event_title":"Quantum Research Institute | Thinking Inside the Box: Quantum Many-Body Frontiers with Ultracold Fermions", "occurrence_title":"", "combined_title":"Quantum Research Institute | Thinking Inside the Box: Quantum Many-Body Frontiers with Ultracold Fermions: Nir Navon (Yale University)", "event_subtitle":"Nir Navon (Yale University)", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Zoom: In the Meeting Invite\nIn-Person: West Hall 411\n\nAbstract:\nRecent progress in the control of complex quantum systems has made it possible to revisit\nlong-standing questions, realize thought experiments once deemed inaccessible, and explore\nnew terrain. Our contribution to this progress has been the development of an experimental\nplatform that creates ultracold quantum fluids in spatiotemporally programmable optical\npotentials, engineered with advanced electro-optic devices.\nIn this talk, I will share our explorations into the physics of fermions confined in \u2018boxes of\nlight\u2019, a deceptively simple stage that gives rise to remarkably rich behavior [1]. Highlights\ninclude few-body recombination in multicomponent fermions [2,3], the first observation of\nthe quantum Joule\u2013Thomson effect for fermions [4], strong-drive spectroscopy of Fermi-\npolaron quasiparticles [5], the first direct observation of the Lindhard response [6], the\nobservation of the emergence and breakdown of Fermi\u2019s Golden Rule in a strongly\ninteracting system [7], and the unveiling of a new correspondence between short-time and\nlong-time behavior in quantum dynamics [8]. Together, these studies span a wide range of\ntopics\u2014thermodynamics, few-body physics, quantum impurity problems, and\nhydrodynamics\u2014showcasing both long-predicted effects finally brought into view and\nsurprising new phenomena.\n[1] N. Navon, R.P. Smith, Z. Hadzibabic, Nature Phys. 17, 1334 (2021)\n[2] Y. Ji et al., Phys. Rev. Lett. 129, 203402 (2022)\n[3] G.L. Schumacher et al., Nature Commun. 17, 174 (2026)\n[4] Y. Ji et al., Phys. Rev. Lett. 132, 153402 (2024)\n[5] F.J. Vivanco, S. Huang, A. Schuckert et al., Nature Phys. 21, 564 (2025)\n[6] S. Huang, Y. Ji et al., Phys. Rev. X 15, 011074 (2025)\n[7] J. Chen et al., Nature Phys. 22, 1453 (2026)\n[8] S. Huang, X. Li et al., arXiv:2605.06666 (2026)\n\nBio\nNir Navon is an Associate Professor of Physics at Yale University. He received his Ph.D. in 2011 from the \u00c9cole Normale Sup\u00e9rieure in Paris (France), where he worked with Christophe Salomon and Fr\u00e9d\u00e9ric Chevy on the thermodynamics of ultracold Bose and Fermi gases. Afterwards, he worked on trapped-ion quantum information in the group of Roee Ozeri at the Weizmann Institute of Science (Israel). From 2013 to 2018, he was a Junior Research Fellow at Trinity College, Cambridge (UK), working with Zoran Hadzibabic on homogeneous Bose gases in optical box traps. He joined the Yale faculty in 2017.\n\nHis group has built an apparatus that produces strongly interacting Fermi gases in programmable potentials. This apparatus has made it possible to experimentally address quantum many-body problems where theory offers few, if any, reliable answers. The group's recent work includes the observation of the as-yet unexplained recombination dynamics of three-component fermions, the emergence of sound in a Fermi fluid with tunable interactions, the strongly driven Fermi polaron, the first observation of the quantum Joule-Thomson effect for fermions, and the emergence and breakdown of Fermi's Golden Rule in a many-body system. His awards and honors include a Packard Fellowship (2017), a Sloan Research Fellowship (2019), an NSF CAREER Award (2020), the New Horizons Lectureship in Physics at the Solvay Institutes (2023), Outstanding Referee of the APS (2023), and a Scialog Fellowship of the RCSA (2025).", "occurrence_notes":null, "guid":"148611-21904525@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/148611", "building_id":"1000167", "building_name":"West Hall", "campus_maps_id":"163", "room":"411", "location_name":"West Hall", "has_livestream":0, "cost":"", "tags":["Astronomy","Chemistry","Computer Science And Engineering","Electrical And Computer Engineering","Electrical Engineering And Computer Science","Materials Science","Physics","Quantum","Quantum Computing","Quantum Science","Applied Physics"], "website":"", "sponsors":[ { "group_name":"Department of Chemistry", "group_id":"3761", "website":"https:\/\/lsa.umich.edu\/chem" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/09\/event_148611_original-1.jpg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2026\/09\/event_148611_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/09\/event_148611_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2026\/09\/event_148611_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/09\/event_148611_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2026\/09\/event_148611_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2026\/09\/event_148611_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2026\/09\/event_148611_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2026\/09\/event_148611_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2026\/09\/event_148611_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2026\/09\/event_148611_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/09\/event_148611_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/09\/event_148611_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2026\/09\/event_148611_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2026\/09\/event_148611_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/09\/event_148611_original-1.jpg" }, "occurrence_count":1, "first_occurrence":21904525 } , "151931-21912477": { "datetime_modified":"20261009T104649", "datetime_start":"20261022T160000", "datetime_end":"20261022T171500", "has_end_time":1, "date_start":"2026-10-22", "date_end":"2026-10-22", "time_start":"16:00:00", "time_end":"17:15:00", "time_zone":"America\/Detroit", "event_title":"Imaging Beyond the Electrode to Bridge Molecular and Macroscopic Scales using 2D IR Microscopy", "occurrence_title":"", "combined_title":"Imaging Beyond the Electrode to Bridge Molecular and Macroscopic Scales using 2D IR Microscopy: Amber Krummel | Colorado State University", "event_subtitle":"Amber Krummel | Colorado State University", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Electrochemical cells rely on redox reactions at electrode\u2013electrolyte interfaces, where electrode composition strongly influences reaction pathways and stability. Copper is widely used as a current collector, yet its interfacial redox dynamics in ionic liquid electrolytes remain poorly understood on ultrafast timescales. Traditional electrochemical techniques provide macroscopic insight but lack the temporal resolution to capture these dynamics. Here, we combine two-dimensional infrared (2D IR) imaging with theory to bridge molecular-scale dynamics and macroscopic electrochemical measurements.Using time-dependent 2D IR imaging, we probe ultrafast vibrational dynamics and chemical equilibria in an ionic liquid containing dicyanamide (DCA\u207b). Although copper(I) is typically unstable in solution, DCA\u207b stabilizes this oxidation state, enabling the formation of both copper(I) and copper(II) DCA complexes under applied potential. Cross-peak analysis reveals dynamic equilibrium and migration of these species near the oxidizing electrode, permitting direct observation of reaction pathways during device operation. These results provide molecular-level insight into copper redox chemistry in ionic liquid electrolytes and demonstrate the capability of 2D IR imaging for studying operating electrochemical systems. Finally, we present a promising approach based on a spectral generalized master equation framework that dramatically reduces image acquisition time.", "occurrence_notes":null, "guid":"151931-21912477@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/151931", "building_id":"1000158", "building_name":"Chemistry Dow Lab", "campus_maps_id":"34", "room":"CHEM 1640", "location_name":"Chemistry Dow Lab", "has_livestream":0, "cost":"", "tags":["Physical Chemistry","Chemistry"], "website":"https:\/\/krummellab.colostate.edu\/", "sponsors":[ { "group_name":"Department of Chemistry", "group_id":"3761", "website":"https:\/\/lsa.umich.edu\/chem" } ], "image_url":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "occurrence_count":1, "first_occurrence":21912477 } , "151569-21911776": { "datetime_modified":"20260928T140621", "datetime_start":"20261027T160000", "datetime_end":"20261027T171500", "has_end_time":1, "date_start":"2026-10-27", "date_end":"2026-10-27", "time_start":"16:00:00", "time_end":"17:15:00", "time_zone":"America\/Detroit", "event_title":"Transition Metal Catalyzed Alkylation and Alkenylation of Olefins: New Molecular Catalysts and the Role of Lewis Acidic Oxidants", "occurrence_title":"", "combined_title":"Transition Metal Catalyzed Alkylation and Alkenylation of Olefins: New Molecular Catalysts and the Role of Lewis Acidic Oxidants: Brent Gunnoe | University of Virginia", "event_subtitle":"Brent Gunnoe | University of Virginia", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"The selective catalytic functionalization of C\u2013H bonds of hydrocarbons remains one of the foremost challenges facing synthetic chemists. For example, alkyl and alkenyl arenes are produced on a scale of billions of pounds per year. Current commercial catalysts (e.g., Friedel-Crafts or zeolites catalysts) for arene alkylation are based on acid-mediated olefin activation. New catalysts that operate by a distinct reaction pathway that involves transition metal-mediated C\u2013H activation followed by olefin insertion into metal-aryl bonds offer potential advantages. The presentation will focus on the development and study of new transition metal catalysts for arene alkylation and alkenylation based on molecular complexes of Ru, Rh, Pd and Pt with an emphasis on the unexpected role of Cu(II) carboxylates that are used as oxidant.", "occurrence_notes":null, "guid":"151569-21911776@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/151569", "building_id":"1000158", "building_name":"Chemistry Dow Lab", "campus_maps_id":"34", "room":"CHEM 1640", "location_name":"Chemistry Dow Lab", "has_livestream":0, "cost":"", "tags":["Inorganic Chemistry","Chemistry"], "website":"https:\/\/gunnoelab.virginia.edu\/?_gl=1*1x7bc70*_ga*MjAxNTc0ODgwMi4xNzg4NTM2OTM3*_ga_68N763636N*czE3ODg1MzY5MzYkbzEkZzAkdDE3ODg1MzY5MzYkajYwJGwwJGgw*_ga_GK1XBTMYM4*czE3ODg1MzY5MzYkbzEkZzAkdDE3ODg1MzY5MzYkajYwJGwwJGgw", "sponsors":[ { "group_name":"Department of Chemistry", "group_id":"3761", "website":"https:\/\/lsa.umich.edu\/chem" } ], "image_url":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "occurrence_count":1, "first_occurrence":21911776 } , "152122-21913073": { "datetime_modified":"20260928T140729", "datetime_start":"20261029T160000", "datetime_end":"20261029T173000", "has_end_time":1, "date_start":"2026-10-29", "date_end":"2026-10-29", "time_start":"16:00:00", "time_end":"17:30:00", "time_zone":"America\/Detroit", "event_title":"Gomberg's Earlier Instances of Trivalent Carbon", "occurrence_title":"", "combined_title":"Gomberg's Earlier Instances of Trivalent Carbon: Bart Kahr | NYU", "event_subtitle":"Bart Kahr | NYU", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"University of Michigan chemistry professor Moses Gomberg\u2019s 1900 revelation, \u201cAn Instance of Trivalent Carbon: Triphenylmethyl\", lauded on a centennial National Historic Chemical Landmark for challenging the \u201cprevailing belief that carbon can only have four bonds\u201d, shifts its' place in our imaginations as the facts given here are accommodated. In 1898 Gomberg presumed that he had made a molecular complex of bromotriphenylmethane and two neutral iodine molecules. But he was mistaken. Instead, Gomberg produced a mixture ofthree persistent single crystals of the triphenylmethyl cation before he published his aforementioned, controversial paper. Trigonal carbon coordination was the crack in the valency rules that had organized chemistry prior to the invention of quantum mechanics. Gomberg did not recognize the wealth of trivalent carbon compounds he had in hand before the proposition of the radical and corresponding cation thereafter. This presentation gives a counterfactual history.", "occurrence_notes":null, "guid":"152122-21913073@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/152122", "building_id":"1000158", "building_name":"Chemistry Dow Lab", "campus_maps_id":"34", "room":"CHEM 1640", "location_name":"Chemistry Dow Lab", "has_livestream":0, "cost":"", "tags":["Materials Chemistry","Chemistry"], "website":"https:\/\/as.nyu.edu\/faculty\/bart-kahr.html?challenge=d06e90d7-4d8f-4b88-9d8c-10b73beb60f1", "sponsors":[ { "group_name":"Department of Chemistry", "group_id":"3761", "website":"https:\/\/lsa.umich.edu\/chem" } ], "image_url":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "occurrence_count":1, "first_occurrence":21913073 } , "153759-21916284": { "datetime_modified":"20261016T095336", "datetime_start":"20261102T150000", "datetime_end":"20261102T170000", "has_end_time":1, "date_start":"2026-11-02", "date_end":"2026-11-02", "time_start":"15:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"Yue Xin - Dissertation Defense", "occurrence_title":"", "combined_title":"Yue Xin - Dissertation Defense: Advances in High-Throughput Chemical Reaction Screening, Rapid Chromatography, and Quantification for Pharmaceutical Development", "event_subtitle":"Advances in High-Throughput Chemical Reaction Screening, Rapid Chromatography, and Quantification for Pharmaceutical Development", "event_type":"Presentation", "event_type_id":"16", "description":"Please join Yue Xin for their dissertation defense titled \"Advances in High-Throughput Chemical Reaction Screening, Rapid Chromatography, and Quantification for Pharmaceutical Development\".\n\n*Date:* Monday, November 2nd\n*Time:* 3:00 p.m.\n*Where:* Rackham Building, West Conference Room\n\nZoom Meeting ID: 915 5885 7486\nPasscode: 110226", "occurrence_notes":null, "guid":"153759-21916284@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/153759", "building_id":"1000172", "building_name":"Rackham Graduate School (Horace H.)", "campus_maps_id":"71", "room":"West Conference Room", "location_name":"Rackham Graduate School (Horace H.)", "has_livestream":0, "cost":"", "tags":["Chemistry"], "website":"https:\/\/www.linkedin.com\/showcase\/michiganchem", "sponsors":[ { "group_name":"Department of Chemistry", "group_id":"3761", "website":"https:\/\/lsa.umich.edu\/chem" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/10\/event_153759_original-1.jpg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2026\/10\/event_153759_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/10\/event_153759_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2026\/10\/event_153759_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/10\/event_153759_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb\/media\/attachments\/2026\/10\/event_153759_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb_square\/media\/attachments\/2026\/10\/event_153759_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large\/media\/attachments\/2026\/10\/event_153759_original-1.jpg", 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"event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_large\/media\/attachments\/2026\/10\/event_153759_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_thumb\/media\/attachments\/2026\/10\/event_153759_original-1.jpg" }, "occurrence_count":1, "first_occurrence":21916284 } , "148612-21904526": { "datetime_modified":"20261002T074523", "datetime_start":"20261105T110000", "datetime_end":"20261105T120000", "has_end_time":1, "date_start":"2026-11-05", "date_end":"2026-11-05", "time_start":"11:00:00", "time_end":"12:00:00", "time_zone":"America\/Detroit", "event_title":"Quantum Research Institute | TBD", "occurrence_title":"", "combined_title":"Quantum Research Institute | TBD: Pankaj Jha (Syracuse University)", "event_subtitle":"Pankaj Jha (Syracuse University)", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Zoom: In the Meeting Invite\n\nIn-Person: West Hall, Room 411\n\nAbstract: TBD", "occurrence_notes":null, "guid":"148612-21904526@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/148612", "building_id":"1000167", "building_name":"West Hall", "campus_maps_id":"163", "room":"411", "location_name":"West Hall", "has_livestream":1, "livestream_type":"other", "livetream_require_login":0, "livestream_id":"", "livestream_link":"", "cost":"", "tags":["Electrical Engineering And Computer Science","Applied Physics","Astronomy","Chemistry","Computer Science And Engineering","Electrical And Computer Engineering","Materials Science","Physics","Quantum","Quantum Computing","Quantum Science"], "website":"", "sponsors":[ { "group_name":"Department of Chemistry", "group_id":"3761", "website":"https:\/\/lsa.umich.edu\/chem" } ], "image_url":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "occurrence_count":1, "first_occurrence":21904526 } , "152120-21913027": { "datetime_modified":"20261015T141142", "datetime_start":"20261105T160000", "datetime_end":"20261105T173000", "has_end_time":1, "date_start":"2026-11-05", "date_end":"2026-11-05", "time_start":"16:00:00", "time_end":"17:30:00", "time_zone":"America\/Detroit", "event_title":"Probing Chemistry Without Pushing It: An Electrochemical View", "occurrence_title":"", "combined_title":"Probing Chemistry Without Pushing It: An Electrochemical View: Lior Sepunaru | UC Santa Barbara", "event_subtitle":"Lior Sepunaru | UC Santa Barbara", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"For more than a century, electrochemical kinetics have been measured largely by driving reactions away from equilibrium, most famously through Tafel analysis. This works well when a single kinetic barrier dominates, but becomes much harder to interpret when several barriers contribute or when the reaction is so fast that moving away from equilibrium immediately brings in mass transport. We recently discovered that equilibrium current fluctuations offer a way around both problems. Because the system is not being driven, the fluctuations report directly on the underlying microscopic exchange processes, allowing intrinsic kinetic information to be extracted without the usual convolution with diffusion and with the possibility of resolving more than one characteristic timescale. We are now extending this idea to adsorption and desorption at catalytic surfaces which are the elementary steps often controlling electrocatalytic reactions but are difficult to measure independently. The fluctuation magnitude and autocorrelation function provide access to both surface occupancy and characteristic adsorption\/desorption timescales. As we move into highly concentrated electrolytes, including the water-in-salt regime, we observe striking changes in these dynamics. \n\nThe second part of the talk carries the same idea into a very different environment: using electrochemistry not simply to drive a process, but to uncover the thermodynamics and kinetics hidden within it. Here, the system is a biomolecular condensate formed by liquidliquid phase separation. The classic Miller\u2013Urey experiments used electrical energy to drive chemical transformations relevant to the origins of life; in our case, we use electrical potential primarily as a probe of chemistry inside a highly concentrated biological phase. We recently found that entering a biomolecular condensate can fundamentally reshape the thermodynamic landscape of a redox reaction, an effect we probed by combining electrochemistry with OPTIR spectroscopy. One consequence is that a reaction that is nonspontaneous in ordinary aqueous solution may become spontaneous inside the condensate. We are now turning from thermodynamics to kinetics, asking whether the intrinsic rate constant itself also changes. This distinction is essential because reactions can appear much faster inside condensates simply because reactants partition strongly into the dense phase, without necessarily becoming intrinsically more reactive. 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