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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 40: POSTERS Electronic and Optical Properties

CPP 40.2: Poster

Donnerstag, 26. März 2009, 17:00–19:30, P3

High resolution single molecule spectroscopy of dye in different environments. — •Stefan Krause, Jörg Schuster, and Christian von Borczyskowski — Center of nanostructured materials and analytics, TU Chemnitz, 09107 Chemnitz

The use of functionalized dyes for fluorescence labelling has introduced a lot of new branches especially in the fields of physics, medicine and biology. Thus, investigating orientation and conformation of bound functionalized molecules is the key to various new applications. According to recent publications on perylene-dyes their spectral properties are very sensitive to conformations of the dye backbones. Hence more detailed single molecule investigations by high resolution fluorescence spectroscopy at low temperature with narrow band dye lasers are a first step to understand the physical processes within these complex systems. Especially the influence of different environments given by the binding of the label on the target surface or the interaction with quantum dots on spectral positions and line widths are of interest [1]. Here we present first results we obtained on surface bound perylene using a home built low temperature single molecule microscopy and spectroscopy setup.

[1] E.I. Zenkevich, C. von Borczyskowski, J. Lum., 122, 784, 2007