Immobilization of Zinc Porphyrin Complexes on Pyridine-FunctionalizedGlass Surfaces

Author(s): A. Dreas-Wlodarczak, M. Müllneritsch, T. Juffmann, C. Cioffi, M. Arndt, M. Mayor

Journal: Langmuir

Volume: 26

Page(s): 10822–10826

Year: 2010

DOI Number: 10.1021/la100638u

Link: Link to publication

Abstract:

In order to immobilize sublimable and fluorescent dye molecules on transparent surfaces for the detection of far field molecular interference experiments, we investigate the potential of pyridine-functionalized glass substrates as coordination sites for the zinc complex of tetraphenylporphyrin (ZnTPP). Borosilicate glass is functionalized with 4-(6-(ethoxydimethylsilyl)hexyloxy)pyridine in order to cover the glass surface with pyridine subunits. ZnTPP molecules are deposited by sublimation through mechanical masks of various sizes in a high-vacuum chamber. The resulting micropatterns are analyzed using epifluorescence microscopy which also allows us to define a measure for the quality of molecular immobilization. We observe a reduced mobility and an increased efficiency for the trapping of ZnTPP on pyridine-functionalized surfaces.

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