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SYSM: Single Molecule Spectroscopy of Nanoobjects

SYSM 3: Single Molecule Spectroscopy of Nanoobjects III

SYSM 3.4: Vortrag

Donnerstag, 5. März 2009, 18:30–18:45, VMP 8 HS

Restricted Conformation Dynamics of Single Functionalised Perylene Bisimide Molecules — Christian von Borczyskowski, •Danny Kowerko, Jörg Schuster, and Stefan Krause — Center of nanostructured materials and analytics, TU-Chemnitz, 09107 Chemnitz

Perylene bisimide molecules offer a large diversity of applications in science and technology due to its outstanding possibilities to introduce functional substituents both at the imide nitrogen and at the carbocyclic scaffold in the so called-bay area. The bay groups give rise to complex intramolecular conformational dynamics that can be uncovered by multiparameter single molecule spectroscopy in different matrices and on via functional pyridyl groups surface attached molecules. Synchronous analysis of polarisation, spectral and lifetime fluctuations also at low temperatures allows for discrimination between changes in orientation and conformation [1]. Discussion of our results in the scope of models reported in current literature gives a deeper insight to conformational interconversion processes and its consequences for radiative and non-radiative fluorescence decay rates.

[1] D. Kowerko, J. Schuster, C. von Borczyskowski, Mol. Phys. 2009, (acc.)