Download A Theoretical Chemistry Approach to Time

A Theoretical Chemistry Approach to
Time-Resolved Molecular Plasmonics
TAME-Plasmons
PI: Stefano Corni
HI: University of Padova
Partner: CNR-Nano, Modena
http://www.tame-plasmons.eu
ERC CoG 2015 - PE4:Physical and Analytical Chemical sciences
Background
Ultrafast optics
• Real time atomic motion
by ultrafast spectroscopy
However:
• Spatial resolution limited by wavelength
• Ensemble measurements (blur details)
...
...
E.g., proteins of photosynthesis
Background
Ultrafast optics
Add plasmonic nanoantenna
• Real time atomic motion
by ultrafast spectroscopy
• To focus light at the nanoscale
Localized Surface Plasmon
However:
• Spatial resolution limited by wavelength
• Ensemble measurements (blur details)
...
...
E.g., proteins of photosynthesis
Ag
Au
tip
BUT:
interpretation
of results?
Goal
To develop a Quantum Chemistry approach
to describe plasmon-enhanced
molecular optical processes in real time
Maxwell eqns
ε(ω)
⁞
Schrödinger eqn
TAMing Plasmonic Experiments
Initial plan
• Plasmon-enhanced High Harmonic Generation
Exp: Kim et al. Nature 2008; Sivis et al. Nature 2012
• Sub-molecular STM electroluminescence
Exp: Qiu et al. Science 2003
• Time-resolved SERS
Exp: Klingsporn et al.; Pozzi et al. JPCLett 2014
• Enhanced pump probe in multi-chromophoric system
(e.g. light-harvesting proteins)
Exp: not performed yet
The Team
Giorgia
Brancolini
Emanuele
Coccia
Jacopo
Fregoni
Gabriel
Gil
...