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SUMMARY:IMX Talks - Photoinduced symmetry-breaking charge-transfer
DTSTART:20240229T150000
DTEND:20240229T160000
DTSTAMP:20260506T195322Z
UID:96e884ff1a89919d946978164a0bd401cac2bf0f8b97fe9032dd9691
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Eric Vauthey\, Dpt. of Physical Chemistry\, University o
 f Geneva\nA substantial number of symmetric molecular architectures\, incl
 uding the reaction centre of photosynthetic bacteria\, undergo photoinduce
 d charge transfer along one of several energetically equivalent pathways\,
  resulting in a breaking of the symmetry. Some of our efforts toward a bet
 ter understanding of the origin and dynamics of these processes will be pr
 esented.\nTwo types of photoinduced symmetry-breaking charge-transfer proc
 ess occurring in symmetric molecular systems will be addressed. The first 
 concerns charge separation between two identical molecules\, and the secon
 d charge transfer in multipolar molecules containing two or more identical
  donor-acceptor branches.\nThe experimental approaches to visualise symmet
 ry breaking in real time using ultrafast spectroscopy will be presented an
 d the main factors governing these processes will be discussed.\nDereka\, 
 B.\; Rosspeintner\, A.\; Li\, Z.\; Liska\, R.\; Vauthey\, E.\, Direct Visu
 alization of Excited-State Symmetry Breaking Using Ultrafast Time-Resolved
  Infrared Spectroscopy. J. Am. Chem. Soc. 2016\, 138\, 4643-4649.\nAster\,
  A.\; Licari\, G.\; Zinna\, F.\; Brun\, E.\; Kumpulainen\, T.\; Tajkhorshi
 d\, E.\; Lacour\, J.\; Vauthey\, E.\, Tuning Symmetry Breaking Charge Sepa
 ration in Perylene Bichromophores by Conformational Control. Chem. Sci. 20
 19\, 10\, 10629-10639.\nVauthey\, E. Watching Excited-State Symmetry Break
 ing in Multibranched Push–Pull Molecules. J. Phys. Chem. Lett. 2022\, 13
 \, 2064-2071.
LOCATION:CM 0 9 https://plan.epfl.ch/?room==CM%200%209
STATUS:CANCELLED
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