Oligothiophene molecular wires at graphene-based molecular junctions

Tingwei Gao, Chunhui He, Chenguang Liu, Yinqi Fan, Cezhou Zhao, Chun Zhao, Weitao Su, Yannick J. Dappe, Li Yang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The use of graphene as a new type of electrode at molecular junctions has led to a renewal of molecular electronics. Indeed, the symmetry breaking induced by the graphene electrode yields different electronic behaviors at the molecular junction and in particular enhanced conductance for longer molecules. In this respect, several studies involving different molecular backbones and anchoring groups have been performed. Here in the same line, we consider oligopthiophene based hybrid gold-graphene junctions and we measure their electrical properties using the STM-I(s) method in order to determine their attenuation factor and the effect of specific anchoring groups. The results are supported by density functional theory (DFT) calculations, and exhibit a similar behavior to what is observed at alkane-based junctions.

Original languageEnglish
Pages (from-to)21163-21171
Number of pages9
JournalPhysical Chemistry Chemical Physics
Issue number37
Publication statusPublished - 7 Oct 2021

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