Photochemical Functionalization of Gallium Nitride Thin Films with Molecular and Biomolecular Layers

We demonstrate that photochemical functionalization can be used to functionalize and photopattern the surface of gallium nitride crystalline thin films with well-defined molecular and biomolecular layers. GaN(0001) surfaces exposed to a hydrogen plasma will react with organic molecules bearing an al...

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Bibliographic Details
Published in:Langmuir 2006-09, Vol.22 (19), p.8121-8126
Main Authors: Kim, Heesuk, Colavita, Paula E, Metz, Kevin M, Nichols, Beth M, Sun, Bin, Uhlrich, John, Wang, Xiaoyu, Kuech, Thomas F, Hamers, Robert J
Format: Article
Language:English
Subjects:
Acetamides
Alkanes - chemistry
Alkenes - chemistry
Chemistry
Cross-Linking Reagents - chemistry
DNA, Single-Stranded - chemistry
Exact sciences and technology
Fluoroacetates
Gallium - chemistry
General and physical chemistry
Membranes, Artificial
Models, Chemical
Molecular Structure
Photochemistry
Spectrum Analysis
Surface Properties
Trifluoroacetic Acid - chemistry
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Summary:We demonstrate that photochemical functionalization can be used to functionalize and photopattern the surface of gallium nitride crystalline thin films with well-defined molecular and biomolecular layers. GaN(0001) surfaces exposed to a hydrogen plasma will react with organic molecules bearing an alkene (CC) group when illuminated with 254 nm light. Using a bifunctional molecule with an alkene group at one end and a protected amine group at the other, this process can be used to link the alkene group to the surface, leaving the protected amine exposed. Using a simple contact mask, we demonstrate the ability to directly pattern the spatial distribution of these protected amine groups on the surface with a lateral resolution of
ISSN:0743-7463
1520-5827
DOI:10.1021/la0610708