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

Jianchen Lu; Binbin Da; Wei Xiong; Renjun Du; Zhenliang Hao; Zilin Ruan; Yong Zhang; Shijie Sun; Lei Gao; Jinming Cai

doi:10.1039/D1CP01040A

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

Jianchen Lu,†^a Binbin Da,†^a Wei Xiong,†^a Renjun Du,^a Zhenliang Hao,^a Zilin Ruan,^a Yong Zhang,^a Shijie Sun,^a Lei Gao^b and Jinming Cai

*^a

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* Corresponding authors

^a Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
E-mail: j.cai@kust.edu.cn

^b Faculty of Science, Kunming University of Science and Technology, Kunming, Yunnan 650093, China

Abstract

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.

Physical Chemistry Chemical Physics

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

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

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