Volume 58, Issue 51 pp. 18591-18597
Research Article

Strain-Induced Isomerization in One-Dimensional Metal–Organic Chains

Dr. Mykola Telychko

Dr. Mykola Telychko

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore

Centre for Advanced 2D Materials (CA2DM), National University of Singapore, 6 Science Drive 2, Singapore, 117546 Singapore

These authors contributed equally to this work.

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Jie Su

Jie Su

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore

Centre for Advanced 2D Materials (CA2DM), National University of Singapore, 6 Science Drive 2, Singapore, 117546 Singapore

These authors contributed equally to this work.

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Aurelio Gallardo

Aurelio Gallardo

Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague, Czech Republic

Institute of Physics, The Czech Academy of Sciences, 162 00 Prague, Czech Republic

Regional Centre of Advanced Technologies and Materials, Palacký University, 78371 Olomouc, Czech Republic

These authors contributed equally to this work.

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Yanwei Gu

Yanwei Gu

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore

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Jesús I. Mendieta-Moreno

Jesús I. Mendieta-Moreno

Institute of Physics, The Czech Academy of Sciences, 162 00 Prague, Czech Republic

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Dongchen Qi

Dongchen Qi

School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland, 4001 Australia

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Dr. Anton Tadich

Dr. Anton Tadich

Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria, 3168 Australia

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Shaotang Song

Shaotang Song

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore

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Pin Lyu

Pin Lyu

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore

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Zhizhan Qiu

Zhizhan Qiu

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore

NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, 28 Medical Drive, Singapore, 117456 Singapore

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Hanyan Fang

Hanyan Fang

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore

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Prof. Ming Joo Koh

Prof. Ming Joo Koh

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore

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Prof. Jishan Wu

Corresponding Author

Prof. Jishan Wu

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore

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Pavel Jelínek

Corresponding Author

Pavel Jelínek

Institute of Physics, The Czech Academy of Sciences, 162 00 Prague, Czech Republic

Regional Centre of Advanced Technologies and Materials, Palacký University, 78371 Olomouc, Czech Republic

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Prof. Jiong Lu

Corresponding Author

Prof. Jiong Lu

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore

Centre for Advanced 2D Materials (CA2DM), National University of Singapore, 6 Science Drive 2, Singapore, 117546 Singapore

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First published: 13 October 2019
Citations: 39

Graphical Abstract

Skeletal rearrangement of 1D metal–organic chains (MOCs) occurs via a concurrent atom shift and bond cleavage on Cu(111) at room temperature. Cu-catalyzed debromination of organic monomers generates 1,5-dimethylnaphthalene diradicals that coordinate to Cu adatoms to form MOCs. Bond-resolved atomic force microscopy and DFT reveal that a relief of internal strain drives skeletal rearrangement.

Abstract

The ability to use mechanical strain to steer chemical reactions creates completely new opportunities for solution- and solid-phase synthesis of functional molecules and materials. However, this strategy is not readily applied in the bottom-up on-surface synthesis of well-defined nanostructures. We report an internal strain-induced skeletal rearrangement of one-dimensional (1D) metal–organic chains (MOCs) via a concurrent atom shift and bond cleavage on Cu(111) at room temperature. The process involves Cu-catalyzed debromination of organic monomers to generate 1,5-dimethylnaphthalene diradicals that coordinate to Cu adatoms, forming MOCs with both homochiral and heterochiral naphthalene backbone arrangements. Bond-resolved non-contact atomic force microscopy imaging combined with density functional theory calculations showed that the relief of substrate-induced internal strain drives the skeletal rearrangement of MOCs via 1,3-H shifts and shift of Cu adatoms that enable migration of the monomer backbone toward an energetically favorable registry with the Cu(111) substrate. Our findings on this strain-induced structural rearrangement in 1D systems will enrich the toolbox for on-surface synthesis of novel functional materials and quantum nanostructures.

Conflict of interest

The authors declare no conflict of interest.

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