Electric-field control of single-molecule tautomerization
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| Autoři: | , , , , , , , , , , |
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| Médium: | artículo original |
| Datum vydání: | 2020 |
| Popis: | The electric field is an important parameter to vary in a single-molecule experiment, because it can directly affect the charge distribution around the molecule. Yet, performing such an experiment with a well-defined electric field for a model chemical reaction at an interface has proven to be extremely difficult. Here, by combining a graphene field-effect transistor and a gate-tunable scanning tunneling microscope (STM), we reveal how this strategy enables the intramolecular H atom transfer of a metalfree macrocycle to be controlled with an external field. Experiments and theory both elucidate how the energetic barrier to tautomerization decreases with increasing electric field. The consistency between the two results demonstrates the potential in using electric fields to engineer molecular switching mechanisms that are ubiquitous in nanoscale electronic devices. |
| Země: | Kérwá |
| Instituce: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/86060 |
| On-line přístup: | https://pubs.rsc.org/en/content/articlehtml/2020/cp/c9cp06868f https://hdl.handle.net/10669/86060 |
| Klíčové slovo: | Molecule Chemical reaction Experiment |