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Design of functional materials for photoactive and smart devices

le 18 mai 2016
10h30

Le docteur Rossella CASTAGNA du Politecnico di Milano – Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta” (Italie), donnera un séminaire à l'ENS Cachan.

Le docteur Castagna donnera un séminaire intitulé:
"Design of functional materials for photoactive and smart devices"

Résumé:
Design of functional materials is an example of a multidisciplinary activity which combines physical, chemical and biochemical disciplines. The final aim is to create smart devices which express a desired function by a careful optimization and engineering of the material. For application in optics and optoelectronics, a leading position is reserved to photoactive material as functional layers. Among them, photochromic systems are an intriguing class of smart switches thanks to their reversible light-sensitive behavior[1-2]. In this framework, by engineering the photochromic material to express the modulation of the desired property, a series of concept devices based on diarylethenes are proposed. In particular, photoactive masks in optical lithography [3-4], light-triggered resistors based on a photoactive polymer and carbon nanotubes [5], and a photochromic capacitor [6]. Another reference field for smart devices is the world of biomedical tools and biosensor devices. Materials engineering regards the creation of functional micro-nanostructured substrates based on biocompatible materials able to interacts with the biological world [8] or on the creation of  bio-interfaces directly manipulating oligonucleotides to realize hybridization platforms [9].

Références
[1] C. Bertarelli et al., J. Photochem. Photobiol. C 2011, 12, 106-125.
[2] R. Castagna et al., J. Photochem. Photobiol. A 2016, 325, 45-54.
[3] G. Pariani, et. al., J. Phys. Chem. A 2011, 115, 12184-12193.
[4] P. Cantu, et. al., Appl. Phys. Lett. 2012, 100, 183103.
[5] C. Sciascia, et. al., J. Phys. Chem. C. 2012, 116, 19483-19489.
[6] R. Castagna, et. al., J. Phys. Chem. Lett. 2012, 3, 51-57.
[7] G. Pariani, et. al., J. Mater. Chem. 2011, 21, 13223-13231.
[8] R. Castagna, et. al., J. Appl. Polym. Sci. 2016, Accepted.
[9] R. Castagna et. al., Langmuir 2016, 32, 3308-3313.
Type :
Séminaires - conférences
Contact :
Rémi Métivier
Lieu(x) :
Auditorium D. Chemla - Institut d'Alembert

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