Switching of Charge Transport Pathways via Delocalization Changes in Single-Molecule Metallacycles Junctions.
J Am Chem Soc
; 139(41): 14344-14347, 2017 10 18.
Article
em En
| MEDLINE
| ID: mdl-28872866
To explore the charge transport through metalla-aromatics building blocks, three metallacycles complexes were synthesized, and their single-molecule conductances were characterized by using mechanically controllable break junction technique. It is found that the conductance of the metallacycles junction with phosphonium group is more than 1 order of magnitude higher than that without phosphonium group. X-ray diffraction and UV-vis absorption spectroscopy suggested that the attached phosphonium group makes metallacycles more delocalized, which shortened the preferred charge transport pathway and significantly enhanced the single-molecule conductance. This work revealed that the delocalization of metalla-aromatics could be used to switch the charge transport pathway of single-molecule junctions and thus tune the charge transport abilities significantly.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article