Sub-nanometer supramolecular rectifier based on the symmetric building block with destructive σ-interference

Autor: Yu Zhou, Chun Tang, Haiping Xia, Zongyuan Xiao, Longfeng Huang, Yaorong Chen, Jingyao Ye, Wenjing Hong, Junyang Liu
Rok vydání: 2021
Předmět:
Zdroj: Science China Chemistry. 64:1426-1433
ISSN: 1869-1870
1674-7291
DOI: 10.1007/s11426-021-1086-4
Popis: Molecular rectifier, as a basic function of molecular electronic devices, has attracted extensive attention for the opportunity in constructing sub-nanometer electronic devices. However, tunneling leakage current has a significant contribution as electronic devices shrink in size, which leads to a challenge in fabricating molecular rectifiers at the sub-nanometer scale. Here, we experimentally demonstrate a sub-nanometer molecular rectifier based on the supramolecular junction assembled between water and 1,4-diazabicyclo[2.2.2]octane (DABCO) molecule. The charge transport through DABCO and corresponding supramolecular junctions exhibits destructive σ-interference, ensuring a sharp conductance variation for transmission modulation. The supramolecular interaction between DABCO and water readily introduces the asymmetric electrode-molecule interaction, which combines with the destructive σ-interference to support the sub-nanometer rectification.
Databáze: OpenAIRE
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