Huan Shan, Ya-hui Mao, Ai-di Zhao. Single-Atom Protecting Group for on-Surface Synthesis of Graphdiyne Nanowires[J]. Chinese Journal of Chemical Physics , 2019, 32(5): 620-624. doi: 10.1063/1674-0068/cjcp1905082
Citation: Huan Shan, Ya-hui Mao, Ai-di Zhao. Single-Atom Protecting Group for on-Surface Synthesis of Graphdiyne Nanowires[J]. Chinese Journal of Chemical Physics , 2019, 32(5): 620-624. doi: 10.1063/1674-0068/cjcp1905082

Single-Atom Protecting Group for on-Surface Synthesis of Graphdiyne Nanowires

doi: 10.1063/1674-0068/cjcp1905082
Funds:  This work was supported by the National Key R&D Program of China (No.2016YFA0200603 No.2017YFA0205004), the Anhui Initiative in Quantum Information Technologies (AHY090300), the National Natural Science Foundation of China (No.21473174), and the Fundamental Research Funds for the Central Universities (No.WK2060190084 and No.WK2340000082). Ai-di Zhao acknowledges a fellow-ship from the Youth Innovation Promotion Association of Chinese Academy of Science (2011322).
  • Received Date: 2018-04-25
  • On-surface synthesis of semiconducting graphdiyne nanowires usually suffer severe side reactions owing to the high reactivity of the butadiynylene units at noble metal surfaces, limiting the production of isolated nanowires. In this work, we report the high-yield synthesis of branchless graphdiyne nanowires [-C≡C-Ph2-C≡C-]n via on-surface Ullmann coupling of 1,4-bis(4-bromophenyl)-1,3-butadiyne molecules with chemical vapor deposition method. Non-contact atomic force microscopy with single-bond resolution reveals that single gold adatoms act as effective protecting groups for butadiynylene units by forming Au-π ligand bonds, preventing unwanted branched coupling reactions and enabling the synthesis of ultralong isolated graphdiyne nanowires. This study will stimulate further investigation on the role of various surface adatoms in protecting on-surface reactions.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Single-Atom Protecting Group for on-Surface Synthesis of Graphdiyne Nanowires

doi: 10.1063/1674-0068/cjcp1905082
Funds:  This work was supported by the National Key R&D Program of China (No.2016YFA0200603 No.2017YFA0205004), the Anhui Initiative in Quantum Information Technologies (AHY090300), the National Natural Science Foundation of China (No.21473174), and the Fundamental Research Funds for the Central Universities (No.WK2060190084 and No.WK2340000082). Ai-di Zhao acknowledges a fellow-ship from the Youth Innovation Promotion Association of Chinese Academy of Science (2011322).

Abstract: On-surface synthesis of semiconducting graphdiyne nanowires usually suffer severe side reactions owing to the high reactivity of the butadiynylene units at noble metal surfaces, limiting the production of isolated nanowires. In this work, we report the high-yield synthesis of branchless graphdiyne nanowires [-C≡C-Ph2-C≡C-]n via on-surface Ullmann coupling of 1,4-bis(4-bromophenyl)-1,3-butadiyne molecules with chemical vapor deposition method. Non-contact atomic force microscopy with single-bond resolution reveals that single gold adatoms act as effective protecting groups for butadiynylene units by forming Au-π ligand bonds, preventing unwanted branched coupling reactions and enabling the synthesis of ultralong isolated graphdiyne nanowires. This study will stimulate further investigation on the role of various surface adatoms in protecting on-surface reactions.

Huan Shan, Ya-hui Mao, Ai-di Zhao. Single-Atom Protecting Group for on-Surface Synthesis of Graphdiyne Nanowires[J]. Chinese Journal of Chemical Physics , 2019, 32(5): 620-624. doi: 10.1063/1674-0068/cjcp1905082
Citation: Huan Shan, Ya-hui Mao, Ai-di Zhao. Single-Atom Protecting Group for on-Surface Synthesis of Graphdiyne Nanowires[J]. Chinese Journal of Chemical Physics , 2019, 32(5): 620-624. doi: 10.1063/1674-0068/cjcp1905082

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