Harvesting More Energetic Photoexcited Electrons from Closely Packed Gold Nanoparticles
- 8 February 2021
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Society for Mass Spectrometry
- Vol. 32 (3), 815-824
- https://doi.org/10.1021/jasms.0c00480
Abstract
The characterization of photoexcited electrons on the surface of nanomaterial remains challenging. Herein, laser excitation mass spectrometry combined with a chemical thermometer and electron acceptor has been developed to characterize the energetics and population density of photoexcited electrons transferred from gold nanoparticles (AuNPs). In contrast to laser fluence and bias voltage, the hot spots of closely packed AuNPs play a more significant role in enhancing the average energetics of photoexcited electrons, which can be harvested effectively by the electron acceptor. By harvesting more energetic photoexcited electrons for the desorption and ionization process, it is anticipated that the sensitive detection of biomarkers can be achieved, which is beneficial to metabolomic studies and early disease diagnosis.Keywords
Funding Information
- Research Grants Council, University Grants Committee (17306117, 17307418, 17308618)
- STU Scientific Research Foundation for Talents (NTF19043)
- 2020 Li Ka Shing Foundation Cross-Disciplinary Research Grant (2020LKSFG01F, 2020LKSFG04D)
This publication has 50 references indexed in Scilit:
- Plasmon-Mediated Chemical Reactions on Nanostructures Unveiled by Surface-Enhanced Raman SpectroscopyAccounts of Chemical Research, 2019
- Mass Spectrometric Imaging Reveals Photocatalytic Degradation Intermediates of Aromatic Organochlorines Resulting from Interfacial Photoelectron Transfer and Hydroxyl Radical Abstraction on Semiconductor NanoparticlesAnalytica Chimica Acta, 2018
- In situ Raman spectroscopic evidence for oxygen reduction reaction intermediates at platinum single-crystal surfacesNature Energy, 2018
- From plasmon-enhanced molecular spectroscopy to plasmon-mediated chemical reactionsNature Reviews Chemistry, 2018
- Surface-Plasmon-Driven Hot Electron PhotochemistryChemical Reviews, 2017
- Photochemical transformations on plasmonic metal nanoparticlesNature Materials, 2015
- Plasmon-induced hot carrier science and technologyNature Nanotechnology, 2015
- Surface Plasmon-Driven Water Reduction: Gold Nanoparticle Size MattersJournal of the American Chemical Society, 2014
- An autonomous photosynthetic device in which all charge carriers derive from surface plasmonsNature Nanotechnology, 2013
- Plasmonic-metal nanostructures for efficient conversion of solar to chemical energyNature Materials, 2011