Chantal Andraud

tel: 33 47 272 8398
E-mail: chantal.andraud@ens-lyon.fr
Web: http://www.ens-lyon.fr/CHIMIE/Fr/Groupes/CFO/

Area of Expertise

Molecular engineering of hyperconjugated molecules (organic and coordination complexes of transition metals and lanthanides) for applications in optics or nonlinear optics.

Biography

Chantal Andraud leads the group “Chemistry for Optics” in ENS-Lyon. In the group, we design molecules (organic and coordination complexes of transition metals and lanthanides) presenting a high response in optics or nonlinear optics. In this last field, targeted applications are electro-optic modulation and different two-photon absorption related applications from the visible to the IR (bio-imaging, 3D photopolymerisation, optical limiting in the visible and near IR and at telecommunication wavelengths, photodynamic therapy). Chantal Andraud has over 110 publications and works in close collaborations with different groups of chemists and physicists in France, Romania, Norway, Sweden, UK, Canada, USA, Japan, and Korea.

Lecture Title(s)

Molecular design for multiphoton absorption: from the visible to telecommunications wavelengths
Applications related to multiphoton absorption are numerous and concern the tridimensionnal photopolymerisation, bio-imaging, photodynamic cancer therapy, optical limiting. We present different approaches of molecular engineering for the design of multiphoton absorbers from the visible to the infra-red and particularly at telecommunications wavelengths and some of these applications. An oligomer strategy, involving excitonic coupling interactions, leads to a high efficiency in the visible, while polymethine cyanines and aza-BODIPY leads to nonlinear absorption between 1400 and 1600 nm. The efficient sensitization of lanthanides in functionalized tris-dipicolinate complexes lead to highly two-photon excited luminescent complexes with promising properties in bio-imaging. The design of stable and neutral organic systems for cells membranes imaging is presented.