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SUMMARY:Shedding new light on photochemistry in nature: from biological mo
 tifs to photoactive protein chromophores - Professor Helen Fielding\, Univ
 ersity College London
DTSTART:20160419T150000Z
DTEND:20160419T160000Z
UID:TALK62259@talks.cam.ac.uk
CONTACT:Alice Wood
DESCRIPTION:Light-induced processes processes are ubiquitous in nature\, f
 or example in the harvesting of solar energy. Isolated biological chromoph
 ores provide ideal laboratories for studying the key elementary processes 
 following light-absorption\, free from the complications of interactions w
 ith aqueous or protein environments.\nIn this seminar\, I will discuss how
  femtosecond time-resolved photoelectron spectroscopy is a valuable tool f
 or probing the electronic structure and electronic and molecular dynamics 
 of biological motifs and chromophores in the gas-phase. This will be follo
 wed by a discussion of our recent work investigating the remarkable photos
 tability of some of nature’s key molecular motifs (aniline and pyrrole) 
 and the competition between ultrafast non-radiative decay and fluorescence
  in the chromophore of the green fluorescent protein\, one of the most wid
 ely used fluorescent proteins in biological imaging.
LOCATION:Pfizer LT
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