Abstract
Charge transport through single molecular neutral mono- and di-cobalt(II) complexes with π-conjugated macromolecular wire was investigated. Scanning tunnelling spectroscopy (STS) studies revealed that the mono-cobalt(II) complex showed a pronounced rectifying effect with a large rectification ratio and finely featured NDR peaks, while the di-cobalt(II) complex showed a relatively symmetric electron transport without clear NDR peaks. The results are explained based on the dipolar and electronic effects.
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