Identification and electronic characterization of four cyclodehydrogenation products of H2TPP molecules on Au(111)

C–H bond activation and dehydrogenative coupling reactions have always been significant approaches to construct microscopic nanostructures on surfaces. By using scanning tunneling microscopy/spectroscopy (STM/STS) and non-contact atomic force microscopy (nc-AFM) combined with density functional theo...

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Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2021-01, Vol.23 (20), p.11784-11788
Main Authors: Lu, Jianchen, Da, Binbin, Xiong, Wei, Du, Renjun, Zhenliang Hao, Ruan, Zilin, Zhang, Yong, Sun, Shijie, Gao, Lei, Cai, Jinming
Format: Article
Language:English
Subjects:
Atomic force microscopy
Chemical reactions
Coupling (molecular)
Dehydrogenation
Density functional theory
Hydrogen bonds
Microscopes
Microscopy
Scanning tunneling microscopy
Spatial distribution
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Summary:C–H bond activation and dehydrogenative coupling reactions have always been significant approaches to construct microscopic nanostructures on surfaces. By using scanning tunneling microscopy/spectroscopy (STM/STS) and non-contact atomic force microscopy (nc-AFM) combined with density functional theory (DFT), we systematically characterized the atomically precise topographies and electronic properties of H2TPP cyclodehydrogenation products on Au(111). Through surface-assisted thermal excitation, four types of cyclodehydrogenation products were obtained and clearly resolved in the nc-AFM images. The electronic characterization depicts the predominant resonances and their spatial distributions of the four products.
ISSN:1463-9076
1463-9084
DOI:10.1039/d1cp01040a