Regensburg 2002 – wissenschaftliches Programm
CPP 18.1: Vortrag
Donnerstag, 14. März 2002, 11:00–11:20, H39
Observing the Motion of Single Molecules in Nanostructured Materials — •Christian Hellriegel, Christian Seebacher und Christoph Bräuchle — Physikalische Chemie, Department Chemie der LMU München, Butenandtstr. 5-13 (Haus E), 81377 München
About a decade ago the single molecule spectroscopy (SMS) was
restricted to very special molecules and materials. Meanwhile
a wealth of systems can be analysed using SMS, ranging from
biological to inorganic systems.
Materials with structural properties on the scale length of
nanometres such as molecular sieves pose ideal environments
to incorporate single molecules in an ordered fashion. We have
recently been able to demonstrate the possibility to detect
single fluorescent dye molecules incorporated as guests in
such materials by confocal microscopy. We gain additional
information from the molecule by recording its emission
spectra and by determining the molecule’s orientation. In
some cases we can directly observe the motion of molecules
inside a porous network, the changing of their orientations
and spectral shifts.
The characterisation of individual molecules, their nearest environment and the interactions between the molecules and their environment is a fundamental step towards the development of devices based on single molecules in nanoporous cages.