Journal
SCIENTIFIC REPORTS
Volume 11, Issue 1, Pages -Publisher
NATURE RESEARCH
DOI: 10.1038/s41598-021-81635-4
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Funding
- Projekt DEAL
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In this study, a simple recipe based on narrowband IR pump and broadband vSFG probe technique was used to computationally obtain the two-dimensional vSFG spectrum of water molecules at the air-water interface. The study demonstrated that the vibrational spectral dynamics of the free OH bond is faster than that of the bonded OH mode at the interface.
Vibrational sum-frequency generation (vSFG) spectroscopy allows the study of the structure and dynamics of interfacial systems. In the present work, we provide a simple recipe, based on a narrowband IR pump and broadband vSFG probe technique, to computationally obtain the two-dimensional vSFG spectrum of water molecules at the air-water interface. Using this technique, to study the time-dependent spectral evolution of hydrogen-bonded and free water molecules, we demonstrate that at the interface, the vibrational spectral dynamics of the free OH bond is faster than that of the bonded OH mode.
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