Creation of functionalized nanostructures on alkyl terminated silicon by selective binding of dye molecules

Thomas Baumgärtel; Harald Graaf; Christian von Borczyskowski

doi:10.1117/12.821706

28 May 2009 Creation of functionalized nanostructures on alkyl terminated silicon by selective binding of dye molecules

Thomas Baumgärtel, Harald Graaf, Christian von Borczyskowski

Proceedings Volume 7364, Nanotechnology IV; 73640A (2009) https://doi.org/10.1117/12.821706
Event: SPIE Europe Microtechnologies for the New Millennium, 2009, Dresden, Germany

Abstract

We report on the functionalization of silicon oxide nanostructures using luminescent dye molecules and the characterization of these systems by optical microscopy. The nanostructures are prepared by local anodic oxidation (LAO) of a dodecyl-terminated silicon substrate using an atomic force microscope (AFM). The silicon oxide nanostructures are negatively charged and the cationic dye rhodamine 6G could be successively bound to the structures by electrostatic interactions. A quenching of luminescence due to the interaction of the excited states with the silicon was found. The luminescence signal is attributed to monomeric Rh6G molecules with a slight blue shift of the emission due to the changed chemical environment.

Citation Download Citation

Thomas Baumgärtel, Harald Graaf, and Christian von Borczyskowski "Creation of functionalized nanostructures on alkyl terminated silicon by selective binding of dye molecules", Proc. SPIE 7364, Nanotechnology IV, 73640A (28 May 2009); https://doi.org/10.1117/12.821706

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