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The 106th AMCP Open Seminar

Exploring structural and electronic properties of helical molecules on surfaces

Schedules 2017.09.06


Date & Time

September 6 (Wed) 2017, 15:00-16:00

Venue

National Institute for Materials Science (NIMS)
Sengen Main Bldg. 8F Middle Seminar Room  → access

Registration

Pre-registration is not required.
For inquiries, please contact the Administrative Office.
This lecture is open to the public. Your participation is strongly encouraged.

Speaker

STETSOVYCH Oleksandr, Postdoctoral Researcher (Czech Academy of Science)

Title

Exploring structural and electronic properties of helical molecules on surfaces

Abstract

Molecules with helical structure fascinate chemists for many years due to their nonplanar structure, which introduces inherently chirality and it exhibits interesting optical and electronic properties. In this talk, I will present two different studies of helicene molecules on metal surfaces to explore: i) chirality transfer driven by on-surface reaction and ii) their mechanical response to an external field. In the first case, I will demonstrate that transfer chirality from a homochiral helical precursor to enantiofacially adsorbed prochiral products through a cascade of stereoconservative on-surface reactions is possible [1]. Detailed molecular structure of intermediates and final products of the chemical reactions, including their chirality, are identified by means of high-resolution SPM images supported by extensive theoretical DFT-based analysis. In the second case, I will report simultaneous tunneling current and force measurements through helicene molecules deposited on Ag(111) surface. I will show that simultaneous AFM/STM measurements together with DFT calculations reveals strong piezoelectric effect detected on a single molecule on metal surface.
[1] O. Stetsovych et al., Nature Chemistry 10.1038/nchem.2662 (2016)


Summary

Event Title
The 106th AMCP Open Seminar
Exploring structural and electronic properties of helical molecules on surfaces
Venue
National Institute for Materials Science (NIMS)
Sengen Main Bldg. 8F Middle Seminar Room
Schedules Hours
2017.09.06
15:00~16:00
Registration Fee
Free

Contact

Research Center for Advanced Measurement and Characterization Administrative Office
National Institute for Materials Science
1-2-1 Sengen, Tsukuba, Ibaraki, 305-0047, Japan
Tel:81-29-859-3861
Fax:81-29-859-2801
E-Mail: amc=ml.nims.go.jp(Please change "=" to "@")
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National Institute for Materials Science (NIMS)
1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, JAPAN
TEL.+81-(0)-29-859-2000
FAX.+81-(0)-29-859-2029