Events Calendar

Visiting Speaker in Chemistry ~ Professeur Nordin Félidj

Date:
Tuesday, May 23, 2017
Time:
11:00 am - 12:00 pm
Location:
Chemistry Building (CHB)
Room: 115
Cost:
Free

Professeur Nordin Félidj
Interfaces, Traitements, Organisation et Dynamique des Systèmes
Université Paris Diderot
Paris Cedex 13, France

will present a talk entitled:

Plasmon-driven multi-functionalization of nanoparticles expands the limits of surface chemistry

Abstract:

Plasmon-driven chemistry is receiving growing attention as the resonant excitation of plasmonic nanoparticles generates an intense local electromagnetic field which can be used to enhance chemical reactions under visible light irradiation. Particularly, plasmon-mediated surface functionalization of nanoparticles is able to locally generate tailored chemical reactivities on the nanoparticle surface, allowing guiding molecules, proteins or catalytic nanomaterials onto regions of maximum field enhancement.

Although efficient strategies for single functionalization of surfaces, confined into nanoscale region, have been developed recently, their extension to the multi-functionalization of surfaces still represents a major breakthrough in plasmon-mediated chemistry [1]. We address this issue in the present presentation by demonstrating that monitoring the incident light polarization on gold nanodisks, under plasmon excitation, allows to locally trigger regiospecific surface double-functionalization, using diazonium salts as surface functionalization agents [2]. This plasmon-based multi-functionalization approach offers promising perspectives for nanoscale regio-selective surface chemistry.

References:

[1] E. Cortés, W. Xie, J. Cambiasso, A. S. Jermyn, R. Sundararaman, P. Narang, S. Schlücker, S. A. Maier, Nat. Commun. 2017, 8, 14880.

 [2] M. Nguyen, A. Lamouri, C. Salameh, G. Levi, J. Grand, L. Boubekeur-Lecaque, C. Mangeney, N. Felidj, Nanoscale 2016, 8, 8633-8640.

Host:
Department of Chemistry
Contact:
Franςois Lagugné-Labarthet - Professeur
flagugne@uwo.ca
X81006
Event Type:


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