Controlled Fragmentation of Single Molecules with Atomic Force Microscopy by Employing Doubly Charged States.
Phys Rev Lett
; 121(22): 226101, 2018 Nov 30.
Article
em En
| MEDLINE
| ID: mdl-30547655
ABSTRACT
By atom manipulation we performed on-surface chemical reactions of a single molecule on a multilayer insulating film using noncontact atomic force microscopy. The single-electron sensitivity of atomic force microscopy allows us to follow the addition of single electrons to the molecule and the investigation of the reaction products. By performing a novel strategy based on long-lived doubly charged states a single molecule is fragmented. The fragmentation can be reverted by again changing the charge state of the system, characterizing a reversible reaction. The experimental results in addition to density-functional theory provide insight into the charge states of the different products and reaction pathways. Similar molecular systems could be used as charge-transfer units and to induce reversible chemical reactions.
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MEDLINE
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En
Ano de publicação:
2018
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Article