Hybrid nanoparticle platforms toward multifunctional surface-enhanced Raman scattering (SERS) spectroscopy applications
Surface-enhanced Raman scattering (SERS) spectroscopy is a highly sensitive spectroscopy technique that can boost the Raman fingerprint signals of molecules. However current SERS applications are limited to dye/thiolated molecules sensing or monitoring spontaneous reactions, mainly due to poor analy...
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| 格式: | Thesis-Doctor of Philosophy |
| 語言: | English |
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Nanyang Technological University
2020
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| 主題: | |
| 在線閱讀: | https://hdl.handle.net/10356/145287 |
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| 總結: | Surface-enhanced Raman scattering (SERS) spectroscopy is a highly sensitive spectroscopy technique that can boost the Raman fingerprint signals of molecules. However current SERS applications are limited to dye/thiolated molecules sensing or monitoring spontaneous reactions, mainly due to poor analyte-plasmonic surface affinities. In this thesis, we address these challenges by designing hybrid plasmonic platforms for multifunctional SERS applications. In chapter 2, we demonstrate the fabrication of hybrid SERS- and electrochemically-active three-dimensional plasmonic liquid marble for in-situ monitoring of an electrochemical redox reaction. In chapter 3, we incorporate metal-organic frameworks (MOFs) with Ag nanocubes superlattice array to preconcentrate non-adsorbing vapor molecules for SERS detection. For chapter 4 and 5, we exploit plasmonic nanoparticles-MOF hybrids for gas-based applications, realizing catalysis and SERS investigation of interfacial processes for ambient electrochemical nitrogen reduction and CO2 carboxylation reaction, respectively. Lastly, I conclude my thesis with a summary of my research works and identify potential future work. |
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