Adsorption and reversible conformational change of a thiophene based molecule on Au(111)

Author:

Sarkar Suchetana,Au-Yeung Kwan Ho,Kühne Tim,Waentig Albrecht,Ryndyk Dmitry A.,Heine Thomas,Cuniberti Gianaurelio,Feng Xinliang,Moresco Francesca

Abstract

AbstractWe present a low temperature scanning tunneling microscope investigation of a prochiral thiophene-based molecule that self-assembles forming islands with different domains on the Au(111) surface. In the domains, two different conformations of the single molecule are observed, depending on a slight rotation of two adjacent bromothiophene groups. Using voltage pulses from the tip, single molecules can be switched between the two conformations. The electronic states have been measured with scanning tunneling spectroscopy, showing that the electronic resonances are mainly localized at the same positions in both conformations. Density-functional theory calculations support the experimental results. Furthermore, we observe that on Ag(111), only one configuration is present and therefore the switching effect is suppressed.

Funder

Deutsche Forschungsgemeinschaft

European Innovation Council

Technische Universität Dresden

Publisher

Springer Science and Business Media LLC

Subject

Multidisciplinary

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Tuning the Planarity of an Aromatic Thianthrene-Based Molecule on Au(111);The Journal of Physical Chemistry C;2024-01-23

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