Chargée de recherche CNRS – Maître de conférences attachée à l’ENS

ENS – Département de chimie
24 rue Lhomond, 75005 Paris

Phone: 0144322413
Office: E121

ORCID: 0000-0002-2333-0227 (link)

Research interests

  • Photochemical mechanisms in light-sensitive proteins and molecules: cis/trans photoisomerization, photoinduced electron and proton transfer…
  • Fluorescent proteins: photophysics, photochemistry, engineering, applications
  • Time-resolved spectroscopy: transient absorption, time-resolved fluorescence, femtosecond to millisecond timescales

Short bio

Agathe Espagne studied chemistry at ENS in Paris. She specialized in mechanistic photochemistry and femtosecond transient absorption spectroscopy as a graduate student in the group of Monique Martin, studying the cis/trans photoisomerization of photoactive protein PYP. She received her PhD degree in physical chemistry in 2005. She was then trained in femtosecond fluorescence spectroscopy in the group of Ahmed H. Zewail at Caltech, and in femtosecond IR spectroscopy in the group of Thomas Elsaesser at MBI Berlin. In 2006 she joined the group of Klaus Brettel at CEA-Saclay, where she investigated photoinduced electron transfer in flavoproteins with transient absorption spectroscopy on subnanosecond to millisecond timescales. She was recruited by CNRS as a permanent researcher in 2007 and focussed then her research on fluorescent proteins photophysics, photochemistry, engineering and applications. First member of LCP in Orsay, she moved to ENS in 2012.


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Early molecular events in the photoactive yellow protein: Role of the chromophore photophysics Article de journal

P Changenet-Barret; A Espagne; S Charier; J -B Baudin; L Jullien; P Plaza; K J Hellingwerf; M M Martin

Photochemical and Photobiological Sciences, 3 (8), p. 823–829, 2004.

Isomerization process in the native and denatured Photoactive Yellow Protein probed by subpicosecond absorption spectroscopy Inproceedings

P Changenet-Barret; A Espagne; P Plaza; M M Martin; Y J Hellingwerf

Martin, M M; Hynes, J T (Ed.): VIth International Conference on Femtochemistry, p. 417-420, Elsevier, 2004.


Excited-state relation dynamics of a PYP chromophore model in solution: Influence of the thioester group Article de journal

P Changenet-Barret; A Espagne; N Katsonis; S Charier; J -B Baudin; L Jullien; P Plaza; M M Martin

Chemical Physics Letters, 365 (3-4), p. 285–291, 2002.


Ionized Aminohydroxycarbene and Its Isomers: Relative Stability and Unimolecular Reactivity Article de journal

G Bouchoux; A Espagne

Chemical Physics Letters, 348 (3-4), p. 329-336, 2001, ISSN: 0009-2614.

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