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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
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Intermolecular Forces Dictate Vibrational Energy Transfer in Plasmonic-Molecule Systems
1Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States.
ACS Nano
|December 22, 2021
Summary
Understanding plasmon-molecule interactions is key for efficient solar energy conversion. This study reveals that intermolecular forces and adsorption geometry significantly control energy transfer in plasmonic catalysts.
Area of Science:
- Photocatalysis
- Plasmonics
- Surface Science
Background:
- Plasmonic materials offer potential for solar energy applications.
- Optimizing plasmonic catalysts requires understanding complex plasmon-molecule interactions.
- Observing these interactions is difficult due to substrate heterogeneity and scale differences.
Purpose of the Study:
- To investigate energy transfer between plasmons and molecules from a molecular viewpoint.
- To identify experimental parameters controlling plasmon-driven energy flow.
- To enhance the efficiency and selectivity of plasmonic catalysis.
Main Methods:
- Utilized ultrafast surface-enhanced anti-Stokes and Stokes Raman spectroscopy.
- Examined picosecond-timescale vibrational energy transfer in plasmonic-molecule systems.
- Compared energy transfer kinetics for five different aromatic thiols.
Main Results:
- Intermolecular forces critically influence energy distribution in adsorbed molecules.
- Adsorption geometry and catalyst loading affect energy transfer rates and lifetimes.
- Demonstrated control over energy flow based on molecular and material parameters.
Conclusions:
- Molecular perspective is crucial for designing efficient plasmonic photocatalysts.
- Catalyst loading and molecule adsorption geometry are key parameters for tuning plasmon-driven energy transfer.
- Findings guide the optimization of plasmonic systems for solar energy harvesting.
Keywords:
intermolecular energy transferintermolecular interactionsplasmon-driven energy transferplasmonic photocatalysisultrafast surface-enhanced Raman spectroscopyMore Related Videos
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