Controlling Electrical Conductance through a π‐Conjugated Cruciform Molecule by Selective Anchoring to Gold Electrodes

Cancan Huang, Songjie Chen, Kristian Baruël Ørnsø, David Reber, Masoud Baghernejad, Yongchun Fu, Thomas Wandlowski, Silvio Decurtins, Wenjing Hong, Kristian Sommer Thygesen, Shi‐Xia Liu

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Tuning charge transport at the single‐molecule level plays a crucial role in the construction of molecular electronic devices. Introduced herein is a promising and operationally simple approach to tune two distinct charge‐transport pathways through a cruciform molecule. Upon in situ cleavage of triisopropylsilyl groups, complete conversion from one junction type to another is achieved with a conductance increase by more than one order of magnitude, and it is consistent with predictions from ab initio transport calculations. Although molecules are well known to conduct through different orbitals (either HOMO or LUMO), the present study represents the first experimental realization of switching between HOMO‐ and LUMO‐dominated transport within the same molecule.
Original languageEnglish
JournalAngewandte Chemie International Edition
Volume54
Issue number48
Pages (from-to)14304-14307
Number of pages4
ISSN1433-7851
DOIs
Publication statusPublished - 2015

Keywords

  • Ab initio calculations
  • Conducting materials
  • Gold
  • Molecular electronics
  • Single‐molecule studies

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