Journal
NANO LETTERS
Volume 15, Issue 10, Pages 6386-6394Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.5b01543
Keywords
Single molecule; isomerization; azobenzene thiol; Au(111); tip-enhanced Raman spectroscopy; scanning tunneling microscopy; hetereogenous catalysis
Categories
Funding
- NSF [CHE-0802913]
- National Science Foundation [DGE-1321846]
- Direct For Mathematical & Physical Scien [1414466] Funding Source: National Science Foundation
- Division Of Chemistry [1414466] Funding Source: National Science Foundation
Ask authors/readers for more resources
While exploring photoisomerization of azobenzyl thiols (ABT) adsorbed on Au(111), through joint scanning tunneling microscopy (STM) and tip-enhanced Raman scattering (TERS) studies, the reversible photoisomerization of one molecule is captured in TERS trajectories. The unique signature of single molecule isomerization is observed in the form of anticorrelated flip-flops between two distinct spectra with two discrete, on- and off-levels. The apparently heterogeneously photocatalyzed reaction is assigned to cis trans isomerization of an outlier, which is chemisorbed on the silver tip of the STM. Otherwise, the ensemble of ABT molecules that lie flat on Au(111) remain strongly coupled to the surface, excluding the possibility of photoisomerization or detection through TERS.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available