Super-robust Xanthine-Sodium Complexes on Au(111)

Chong Chen; Pengcheng C. Ding; Zhuo Li; Guoqiang Q. Shi; Ye Sun; Lev N. Kantorovich; Flemming Besenbacher; MIao Yu

doi:10.1002/anie.202200064

Super-robust Xanthine-Sodium Complexes on Au(111)

Chong Chen, Pengcheng C. Ding, Zhuo Li, Guoqiang Q. Shi, Ye Sun, Lev N. Kantorovich, Flemming Besenbacher, MIao Yu

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Abstract

A widely-accepted theory is that life originated from the hydrothermal environment in the primordial ocean. Nevertheless, the low desorption temperature from inorganic substrates and the fragileness of hydrogen-bonded nucleobases do not support the required thermal stability in such an environment. Herein, we report the super-robust complexes of xanthine, one of the precursors for the primitive nucleic acids, with Na. We demonstrate that the well-defined xanthine-Na complexes can only form when the temperature is  430 K, and the complexes keep adsorbed even at 720 K, presenting as the most thermally stable organic polymer ever reported on Au(111). This work not only justifies the necessity of high-temperature, Na-rich environment for the prebiotic biosynthesis but also reveals the robustness of the xanthine-Na complexes upon the harsh environment. Moreover, the complexes can induce significant electron transfer with the metal as inert as Au and hence lift the Au atoms up.

Original language	English
Article number	e202200064
Journal	ANGEWANDTE CHEMIE INTERNATIONAL EDITION IN ENGLISH
Volume	61
Issue number	16
Early online date	23 Feb 2022
DOIs	https://doi.org/10.1002/anie.202200064
Publication status	Published - 11 Apr 2022

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title = "Super-robust Xanthine-Sodium Complexes on Au(111)",

abstract = "A widely-accepted theory is that life originated from the hydrothermal environment in the primordial ocean. Nevertheless, the low desorption temperature from inorganic substrates and the fragileness of hydrogen-bonded nucleobases do not support the required thermal stability in such an environment. Herein, we report the super-robust complexes of xanthine, one of the precursors for the primitive nucleic acids, with Na. We demonstrate that the well-defined xanthine-Na complexes can only form when the temperature is  430 K, and the complexes keep adsorbed even at 720 K, presenting as the most thermally stable organic polymer ever reported on Au(111). This work not only justifies the necessity of high-temperature, Na-rich environment for the prebiotic biosynthesis but also reveals the robustness of the xanthine-Na complexes upon the harsh environment. Moreover, the complexes can induce significant electron transfer with the metal as inert as Au and hence lift the Au atoms up.",

author = "Chong Chen and Ding, {Pengcheng C.} and Zhuo Li and Shi, {Guoqiang Q.} and Ye Sun and Kantorovich, {Lev N.} and Flemming Besenbacher and MIao Yu",

note = "Funding Information: This work is financially supported by the National Natural Science Foundation of China (21473045, 51772066, 52073074, 22002103), and State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (2021TS08). Publisher Copyright: {\textcopyright} 2022 Wiley-VCH GmbH",

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AU - Chen, Chong

AU - Ding, Pengcheng C.

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AU - Sun, Ye

AU - Kantorovich, Lev N.

AU - Besenbacher, Flemming

AU - Yu, MIao

N1 - Funding Information: This work is financially supported by the National Natural Science Foundation of China (21473045, 51772066, 52073074, 22002103), and State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (2021TS08). Publisher Copyright: © 2022 Wiley-VCH GmbH

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Super-robust Xanthine-Sodium Complexes on Au(111)

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