Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 12, Issue 41, Pages 10034-10039Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.1c02808
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Funding
- NSFC [21903054]
- NSAF [U1730449, U1930403]
- National Basic Research Program of China [2016YFA0301201]
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This study demonstrates a direct profile of the dark-state transition density of a single molecule on the subnanometer scale using a scanning tunneling microscope, allowing for the resolution of the four-lobe configuration in a 1 nm region for the example molecule. The current proposal brings about a new methodology to study the single-molecule properties in electro-optical devices and light-assisted biological processes.
Molecular dark states, participating in various energyand electron-transfer processes, are typically beyond direct optical-spectroscopic measurements because of the forbidden transition dictated by the selection rule. In this work, we demonstrate a direct profile of the dark-state transition density of a single molecule on the subnanometer scale by using a scanning tunneling microscope. Our method allows one to resolve the four-lobe configuration in a 1 nm region for the example molecule. The current proposal will bring about a new methodology to study the single-molecule properties in electro-optical devices and light-assisted biological processes.
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