A Photolithographic Approach to Spatially Resolved Cross-Linked Nanolayers

Fuchise, K., Lindemann, P., Heißler, S., Gliemann, H., Trouillet, V., Welle, A., Berson, J., Walheim, S., Schimmel, T., Meier, M. A. R., & Barner-Kowollik, C. (2015) A Photolithographic Approach to Spatially Resolved Cross-Linked Nanolayers. Langmuir, 31(10).

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(Figure Presented). The preparation of cross-linked nanosheets with 1-2 nm thickness and predefined shape was achieved by lithographic immobilization of trimethacryloyl thioalkanoates onto the surface of Si wafers, which were functionalized with 2-(phenacylthio)acetamido groups via a photoinduced reaction. Subsequent cross-linking via free radical polymerization as well as a phototriggered Diels-Alder reaction under mild conditions on the surface led to the desired nanosheets. Electrospray ionization mass spectrometry (ESI-MS), X-ray photoelectron spectroscopy (XPS), time-of-flight secondary ion mass spectrometry (ToF-SIMS), as well as infrared reflection-absorption spectroscopy (IRRAS) confirmed the success of individual surface-modification and cross-linking reactions. The thickness and lateral size of the cross-linked structures were determined by atomic force microscopy (AFM) for samples prepared on Si wafers functionalized with a self-assembled monolayer of 1H,1H,2H,2H-perfluorodecyl groups bearing circular pores obtained via a polymer blend lithographic approach, which led to the cross-linking reactions occurring in circular nanoareas (diameter of 50-640 nm) yielding an average thickness of 1.2 nm (radical cross-linking), 1.8 nm (radical cross-linking in the presence of 2,2,2-trifluoroethyl methacrylate as a comonomer), and 1.1 nm (photochemical cross-linking) of the nanosheets. © 2015 American Chemical Society.

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ID Code: 99429
Item Type: Journal Article
Refereed: Yes
Additional Information: Cited By :3
Export Date: 5 September 2016
Correspondence Address: Schimmel, T.; Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Germany
Chemicals/CAS: acetamide, 60-35-5; silicon, 7440-21-3; acetamide; Acetamides; Carboxylic Acids; Silicon
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Keywords: Absorption spectroscopy, Atomic force microscopy, Crystal atomic structure, Electrodeposition, Electrospray ionization, Free radical polymerization, Free radicals, Mass spectrometry, Nanosheets, Organic polymers, Photochemical reactions, Photoionization, Secondary ion mass spectrometry, Self assembled monolayers, Silicon, Silicon wafers, Spectrometry, Surface treatment, X ray photoelectron spectroscopy, Crosslinked structures, Crosslinking reaction, Diels-Alder reaction, Electrospray ionization mass spectrometry, Infrared reflection absorption spectroscopy, Photochemical cross-linking, Photoinduced reaction, Time of flight secondary ion mass spectrometry, Crosslinking, acetamide, acetamide derivative, carboxylic acid, nanomaterial, chemistry, nanotechnology, photochemistry, procedures, surface property, Acetamides, Carboxylic Acids, Nanostructures, Photochemical Processes, Surface Properties
DOI: 10.1021/la505011j
ISSN: 07437463
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 22 Sep 2016 04:50
Last Modified: 26 Sep 2016 23:36

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