Gold nanostructures on chemically reinforced PDMS microwell arrays

作者：Nam Hye Jin; Jung Duk Young^*; Park Yong Kyun; Park Sungho

来源：Applied Surface Science, 2010, 256(7): 2066-2072.

DOI：10.1016/j.apsusc.2009.09.049

• Organic-inorganic hybrid
• Thermal stability
• Colloidal crystal
• Self-assembly
• Reinforced polymer
• Surface modification

This paper describes a facile strategy for fabricating arrays of two- and three-dimensional gold nanostructures using PDMS-infiltrated polystyrene (PS) colloidal crystals. PDMS molding of colloidal crystal, gold vapor deposition, and subsequent calcination of PS produced gold thin layers over hexagonal PDMS microwell arrays with hemispherical air-voids of approximately 140 nm on glass substrates. Vapor deposition of perfluoroalkylsilane thin layers improved the thermal stability of the colloidal template over 100 degrees C, providing a route to preparation of hollow architectures with gold thin layers supported by PDMS nanostructures. Surface modification of the PDMS using poly(allylamine hydrochloride) induced two-dimensional colloidal crystals of PS and PMMA spheres through electrostatic interactions. Particle aggregation of 13 nm gold nanoparticles in the PDMS microwells demonstrated a surface plasmon resonance band red-shifted to 810 nm, in comparison with that on the flat surface at 720 nm.

• 出版日期2010-1-15