Intermolecular Forces Dictate Vibrational Energy Transfer in Plasmonic–Molecule Systems

ACS Nano ◽  
2021 ◽  
Author(s):  
Ziwei Yu ◽  
Renee R. Frontiera
Keyword(s):  
Energy Transfer ◽  
Vibrational Energy ◽  
Intermolecular Forces ◽  
Vibrational Energy Transfer

Intermolecular vibrational energy transfer enabled by microcavity strong light–matter coupling

Science ◽  
2020 ◽  
Vol 368 (6491) ◽  
pp. 665-667 ◽  
Author(s):  
Bo Xiang ◽  
Raphael F. Ribeiro ◽  
Matthew Du ◽  
Liying Chen ◽  
Zimo Yang ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Vibrational Energy ◽  
Intermolecular Forces ◽  
Vibrational Energy Transfer ◽  
Strong Light ◽  
Pump Probe ◽  
Donor And Acceptor ◽  
Weak Intermolecular Forces ◽  
Two Dimensional Infrared Spectroscopy ◽  
Energy Transfer Pathway

Selective vibrational energy transfer between molecules in the liquid phase, a difficult process hampered by weak intermolecular forces, is achieved through polaritons formed by strong coupling between cavity photon modes and donor and acceptor molecules. Using pump-probe and two-dimensional infrared spectroscopy, we found that the excitation of the upper polariton, which is composed mostly of donors, can efficiently relax to the acceptors within ~5 picoseconds. The energy-transfer efficiency can be further enhanced by increasing the cavity lifetime, suggesting that the energy transfer is a polaritonic process. This vibrational energy-transfer pathway opens doors for applications in remote chemistry, sensing mechanisms, and vibrational polariton condensation.

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