Molecular Electronics / Single-Molecule Electronics 单分子电子学

 

Electrochemical gating for single-molecule electronics

电化学驱动的单分子器件

Break junction techniques, including STM break junctions and mechanically controllable break junctions are considered as testbed to investigate and control the charge transport on a single-molecule scale. The additional electrochemical gating provides a unique opportunity to manipulate the energy alignment and molecular redox processes for a single-molecule junction.

施加的电化学环境可以有效改变单分子器件的化学结构和能级分布,将单分子技术与电化学技术耦合可以实现对单分子尺度器件的有效调控。

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Huang, C.; Rudnev, A.; Hong, W.;* Wandlowski, T. “Break junction under electrochemical gating: testbed for single-molecule electronics”, Chemical Society Reviews, 2015, 44, 889-901 (invited review)

Li, Y.; Baghernejad, M.; Qusiy, Q.; Manrique, D. Z.; Zhang, G.; Hamill, J.; Fu, Y.; Broekmann, P.; Hong, W.;*Wandlowski, T.; Zhang, D.;* Lambert, C.* “Three states single-molecule naphthalenediimide switch: integration of pendant redox unit for conductance tuning”, Angewandte Chemie Int. Ed., 2015, in press, DOI: 10.1002/anie.201506458R1.

Baghernejad, M.; Zhao, X., Ørnsø, K.B.; Füeg, M.; Moreno-Garcia, P.; Rudnev, A., Kaliginedi, V.; Vesztergom, S.; Huang, C.; Hong, W.;* Broekmann, P.; Wandlowski, T.; Thygesen, K.;* Bryce, M. R.* “Electrochemical control of single-molecule conductance by Fermi-level tuning and conjugation switching.” Journal of the American Chemical Society 2014, 136(52), 17922–17925.

 

 

Connectivity driven conductance and quantum interference effect in graphene like molecules

类石墨烯共轭分子的连接位点效应和量子干涉效应

We are exploring the connectivity driven conductance and quantum interference effect in big aromatic system, and our goal is to develop some approach to isolate and manipulate quantum interference patterns in the hearts of polycyclic aromatic hydrocarbons, which could be a significant step toward realizing the potential of single-molecule electronics.

我们进行了对连接位点和量子干涉效应的一系列探索,该方向研究的主要目的在于摸索一种全新的方法来实现对共轭分子骨架中量子干涉效应的控制,以此提供一种对于单分子器件电学性质调控的新思路。

 

Manrique, D.Z.; Huang, C.; Baghernejad, M.; Zhao, X.; A. Al-Owaedi, O; Sadeghi, H.; Kaliginedi, V.; Hong, W.;*Gulcur, M; Wandlowski, T.; Bryce, M. R.;* Lambert, C.* “A quantum circuit rule for interference effects in single-molecule electrical junctions”, Nature Communications, 2015, 6, 6389.

Sangtarash, S*; Huang, C; Sadeghi, H; Sorohhov, G; Hauser, J; Wandlowski, T; Hong, W;* Decurtins, S; Liu, S.-X.;* Lambert C.*”Searching the Hearts of Graphene-like Molecules for Simplicity, Sensitivity, and Logic” Journal of the American Chemical Society, 2015, 137(35), 11425-11431.

Geng, Y.; Sangtarash, S.;* Huang, C.; Sadeghi, H.; Fu, Y.; Hong, W.;* Wandlowski, T.; Decurtins, S.; Lambert, C.;* Liu, S.-X.* “Magic ratios for connectivity-driven electrical conductance of graphene-like molecules.” Journal of the American Chemical Society, 2015, 137(13), 4469–4476.

 

 

Surface functionalization of metal electrodes

电极表面修饰技术

Interface engineering to attain a uniform and compact self-assembled monolayer at atomically flat surfaces plays a crucial role in the bottom-up fabrication of organic molecular devices. Working with Prof. Silvio Decurtins’ group, we develop a promising and operationally simple approach for modification/functionalization on different electrode surfaces upon efficient desilylation chemistry.

电极表面修饰和界面工程是有机器件中的一个最关键问题,通过与Silvio Decurtins教授的密切合作,我们研发了一种通过去硅烷化反应具有高度普适性的表面修饰技术。

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Huang, C.; Chen, S.; Ørnsø, K.B.; Reber, D.; Baghernejad, M.; Fu, Y.; Wandlowski, T.; Decurtins, S.; Hong, W.;*Thygesen, K. S.;* Liu, S.-X;* “Controlling electrical conductance through a π-conjugated cruciform molecule via selective anchoring to gold electrodes” Angewandte Chemie Int. Ed., 2015, in press, DOI: 10.1002/anie.201506026R1

Fu, Y.; Chen, S.; Kuzume, A.; Rudnev, A.; Huang, C.; Kaliginedi, V.; Baghernejad, M.; Hong, W.;* Wandlowski, T.; Decurtins, S.; Liu S-X.* “Exploitation of desilylation chemistry in tailor-made functionalization on diverse surfaces”, Nature Communications, 2015, 6, 6403.

Hong, W.; Li, H.; Liu, S.-X.; Fu, Y.; Li, J.; Kaliginedi, V.; Decurtins, S.; Wandlowski, T. “Trimethylsilyl terminated oligo(phenylene ethynylene)s: an approach to single-molecule junctions with covalent Au–C bonds.” Journal of the American Chemical Society 2012, 134(47), 19425–19431.(Highlighted in Chimia)

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