Melamine self-assembly and dehydrogenation on Ag(111) studied by tip-enhanced Raman spectroscopy-Reference-Cited by-同舟云学术

Melamine self-assembly and dehydrogenation on Ag(111) studied by tip-enhanced Raman spectroscopy

Published:2022-05-28 Issue:20 Volume:156 Page:204301
ISSN:0021-9606
Container-title:The Journal of Chemical Physics
language:en
Short-container-title:J. Chem. Phys.

Author:

Zhang Ping¹²^ORCID,Chen Linjie³,Sheng Shaoxiang¹²^ORCID,Hu Wenqi¹²,Liu Huiru¹²,Ma Chen¹²,Liu Zijia¹²,Feng Baojie¹²,Cheng Peng¹²^ORCID,Zhang Yiqi¹²,Chen Lan¹²,Zhao Jin⁴^ORCID,Wu Kehui¹²⁵^ORCID

Affiliation:

1. Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

2. School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China

3. Department of Chemical Physics, School of Chemistry, University of Science and Technology of China, Hefei 230026, China

4. Department of Physics, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China

5. Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China

Abstract

The adsorption and self-assembly structures of melamine molecules on an Ag(111) surface are studied by low temperature scanning tunneling microscopy (STM) combined with tip-enhanced Raman spectroscopy (TERS). Two ordered self-assembly phases of melamine molecules on Ag(111) were studied by STM and TERS, combining with first-principles simulations. The α-phase consists of flat-lying melamine molecules, while the β-phase consists of mixed up-standing/tilted melamine molecules. Moreover, dehydrogenation of melamine can be controlled by annealing the sample as well as by a tip-enhanced photo-catalytic effect. Our work demonstrates TERS as a powerful tool not only for investigating the configuration and vibration properties of molecules on a metal surface with high spatial resolution but also for manipulating the chemical reactions with tip and photo-induced effects.

Funder

NSF of China

Key Research Program of Frontier Science, Chinese Academy of Sciences

Publisher

AIP Publishing

Subject

Physical and Theoretical Chemistry,General Physics and Astronomy

Link

https://aip.scitation.org/doi/pdf/10.1063/5.0091353

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