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Berlin 2008 – scientific programme

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O: Fachverband Oberflächenphysik

O 76: Organic, Polymeric, Biomolecular Films - also with Adsorbates

O 76.4: Talk

Thursday, February 28, 2008, 16:00–16:15, MA 043

Fabrication of multifunctional surface structures via laser patterning of silicon bound organic monolayers — •Benjamin Klingebiel1, Luc Scheres2, Steffen Franzka1, Nils Hartmann1, and Han Zuilhof21Fachbereich Chemie and Center for Nanointegration Duisburg-Essen (CeNIDE), Universität Duisburg-Essen (UDE), 45141 Essen, Germany — 2Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The Netherlands

Silicon substrates are widely used as platforms in many micro- and nanofabrication schemes, e. g. in order to build up functional organic templates. For this purpose suitable patterning and functionalization techniques are needed [1-2]. Here we present a facile routine which allows to fabricate multifunctional organic surface structures. H-terminated Si(111) samples were functionalized with 1-hexadecene and 1-hexadecyne, respectively. Laser patterning of the primary monolayer then was carried out following a photothermal routine creating structures down to 100 nm and below [2]. For secondary functionalization of the depleted lines the samples were etched in ammonium fluoride solution and coated with hexadecynoic acid. Using N-hydroxysuccinimide (NHS) coupling chemistry this provides a means to bind biochemical compounds with primary amine groups. In order to test this functionality the samples were treated with NHS and dodecylamine.

1. L. Scheres, A. Arafat, H. Zuilhof, Langmuir 23 (2007) 8343.

2. D. Dahlhaus, S. Franzka, E. Hasselbrink, N. Hartmann, Nano Letters 6 (2006) 2358.

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