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Stanglmair C, Neubrech F, Pacholski C. Chemical Routes to Surface Enhanced Infrared Absorption (SEIRA) Substrates. Z PHYS CHEM 2018. [DOI: 10.1515/zpch-2018-1132] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Bottom-up strategies for fabricating SEIRA substrates are presented. For this purpose, wet-chemically prepared gold nanoparticles are coated with a polystyrene shell and subsequently self-assembled into different nanostructures such as quasi-hexagonally ordered gold nanoparticle monolayers, double layers, and honeycomb structures. Furthermore elongated gold nanostructures are obtained by sintering of gold nanoparticle double layers. The optical properties of these different gold nanostructures are directly connected to their morphology and geometrical arrangement – leading to surface plasmon resonances from the visible to the infrared wavelength range. Finally, SEIRA enhancement factors are determined. Gold nanoparticle double layers show the best performance as SEIRA substrates.
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Affiliation(s)
- Christoph Stanglmair
- Department of New Materials and Biosystems , Max Planck Institute for Intelligent Systems , Heisenbergstr. 3 , 70569 Stuttgart , Germany
- Department of Biophysical Chemistry , University of Heidelberg, Am Neuenheimer Feld 253 , 69120 Heidelberg , Germany
| | - Frank Neubrech
- Kirchhoff-Institute for Physics , University Heidelberg, Im Neuenheimer Feld 227 , 69120 Heidelberg , Germany
| | - Claudia Pacholski
- Institute of Chemistry, innoFSPEC , University of Potsdam, Am Mühlenberg 3 , 14476 Potsdam , Germany
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