J. Henzl, T. Bredow, K. Morgenstern
Feb 19, 2007
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0
Influential Citations
59
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Journal
Chemical Physics Letters
Abstract
Abstract Isolated molecules of 4-dimethylaminoazobenzene-4-sulfonic acid, an azobenzene derivate called Methyl Orange, are adsorbed on the Au(1 1 1) surface at 18 K and investigated with scanning tunneling microscopy at 5 K. Methyl Orange adsorbs in both trans - and cis -configuration on the substrate. The cis -configuration largely dominates in contrast to the gas phase where the trans -configuration is energetically preferred. Electron-induced manipulation with electron energies of 900 meV allows to switch the trans - into the cis -configuration while the inverse process is not possible below the fragmentation of the molecule at electron energies of 1000 meV.