The goal of the project is to switch individual molecules by optical means.
The molecules will be addressed using a near-field optical probe: a
nanometer-sized optical source allowing highly localised excitation.
The optical field will be modulated in amplitude, polarisation and
wavelength with high frequency or alternatively ultra-short femto-second
pulses will be delivered. Suitable molecules are being synthesised by
supra-molecular chemists in a close collaboration within this project.
Different switching routes will be investigated: orientational switching
using electric field induced poling and subsequent polarisation sensitive
detection, conformational switching based on photo-induced cis-trans
isomerisation by two colour laser excitation, and finally switching of the
molecular quantum yield.