BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Mechanistic insights into electron-transfer reactions: from electr
 ocatalysis to solar cells - Professor Maxie M. Roessler
DTSTART:20260319T140000Z
DTEND:20260319T150000Z
UID:TALK241918@talks.cam.ac.uk
CONTACT:Sharon Connor
DESCRIPTION:Electron transfer underpins fundamental biological processes s
 uch as respiration and photosynthesis as well as modern technologies. Unpa
 ired electrons play an important role in numerous such redox reactions but
  these can be difficult to capture. In this talk I will discuss how we are
  exploiting and developing electron paramagnetic resonance (EPR) based tec
 hniques in conjunction with electrochemistry and materials chemistry to ga
 in mechanistic insights into electron-transfer reactions. \n\nI will intro
 duce film-electrochemical EPR spectroscopy (FE EPR) as a tool to investiga
 te redox-active molecules\, including catalysts.  With operando FE-EPR\, u
 sing indium-tin-oxide electrodes\, we showed that it is possible to gain n
 ew mechanistic insight by monitoring the evolution of radicals during cata
 lysis in real time.1 I will further discuss our ongoing work on extending 
 FE-EPR to metalloenzymes\,2\,3 and on exploring the properties of carbon n
 anotube structures as electrode materials.4 Lastly\, I will discuss how ou
 r efforts to understand interfacial electron transfer have led to the impr
 oved efficiency of tin perovskite solar cells.5 \n\nShort Bio \nMaxie M. R
 ößler is Professor of Chemistry at Imperial College London. She earned h
 er MChem degree from the University of Oxford and completed her DPhil in I
 norganic Chemistry under Prof. Fraser Armstrong FRS in 2012. Maxie began h
 er independent career at Queen Mary University of London in 2013 and joine
 d Imperial in 2019\, where she founded the Centre for Pulse EPR (PEPR). He
 r recent recognitions include being named the Blavatnik Awards in the UK C
 hemistry Laureate (2026)\, receiving the Royal Society of Chemistry Joseph
  Black Prize (2024) and the European Bioinorganic Chemistry Medal (2022). 
 \n1.	Seif-Eddine\, M. et al. Operando film-electrochemical EPR spectroscop
 y tracks radical intermediates in surface-immobilized catalysts. Nature Ch
 emistry 2024 16:6 16\, 1015–1023 (2024).\n2.	Facchetti\, D.\, Dang\, Y.\
 , Seif-Eddine\, M.\, Geoghegan\, B. L. & Roessler\, M. M. Film-electrochem
 ical EPR spectroscopy to investigate electron transfer in membrane protein
 s in their native environment. Chemical Communications 60\, 12690–12693 
 (2024).\n3.	Abdiaziz\, K.\, Salvadori\, E.\, Sokol\, K. P.\, Reisner\, E. 
 & Roessler\, M. M. Protein film electrochemical EPR spectroscopy as a tech
 nique to investigate redox reactions in biomolecules. Chemical Communicati
 ons 55\, 8840–8843 (2019).\n4.	Dang\, Y.\, Seif-Eddine\, M.\, Ying\, Z.\
 , Shaffer\, M. S. P. & Roessler\, M. M. Carbon Nanotube Electrodes as a Ve
 rsatile Platform for Operando Film-Electrochemical EPR Spectroscopy. Manus
 cript under review (2026)\, doi.org/10.26434/chemrxiv-2026-t8sfs.\n5.	Fang
 \, F. et al. Electron hopping in conjugated molecular wires with applicati
 on to solar cells. Nature Chemistry 2026 1–9 (2026) doi:10.1038/s41557-0
 25-02034-0.\n \n
LOCATION:Dept of Chemistry\, Wolfson Lecture Theatre 
END:VEVENT
END:VCALENDAR