# Structural flexibility and mobility of coordination polymers on Cu(111)

https://mdr.nims.go.jp/datasets/8d6f8ff6-b2e4-4d63-8af3-673bd000f716

## File

- [authorreprints.pdf](https://mdr.nims.go.jp/filesets/412e5775-0cd3-4247-ab37-327923702b7c/download) ([Detail](https://mdr.nims.go.jp/filesets/412e5775-0cd3-4247-ab37-327923702b7c.md))

## Id

8d6f8ff6-b2e4-4d63-8af3-673bd000f716

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-06-03T06:03:08.607225Z

## Updated at

2025-06-03T23:30:07.171454Z

## Published at

2025-06-03T23:20:16.939073Z

## Doi



## First published url

https://doi.org/10.1039/d5sc01949d

## Date published

2025-04-28

## Recorded date published

2025-5-28

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Structural flexibility and mobility of coordination polymers on Cu(111)
  title_type: original
  lang: en

## Description

- description: 'Coordination polymers on surfaces have been investigated at the atomic
    level via scanning tunneling microscopy (STM), revealing a variety of structures
    and electronic states. However, analysis of their dynamic behaviours at low temperatures
    has been hampered due to the strong adsorption of organic ligands on metal surfaces.
    In this study, we designed 2,7-dicyano-9,9-dimethyl-9H-fluorene (DCF) as a ligand
    for coordination polymer in order to reveal its mobility at low temperatures.
    The dimethyl group attached to the ligand reduces the interaction with the metal
    surface and serves as an indicator of the ligand orientation. This enables individual
    tracking of DCF in DCF-Cu polymer on Cu(111) after their coordination with copper
    adatoms. Upon heating from 4 K to 78 K, branched structures were less mobile,
    while linear structures and short polymers with free ends exhibited higher mobility.
    Partial cleavage, recombination, and insertion of the polymer chains were observed
    in some sections of the polymer chains. Density functional theory (DFT) calculations
    suggest that the flexibility of the coordination angle (180° ± 20°) facilitates
    such transformations. This study provided a direct observation of the motion differences
    attributed to polymer chain structures as proposed in real materials.  '
  description_type: abstract
  lang: und

## Creator

- name: Waka Nakanishi
  role: author
  orcid: https://orcid.org/0000-0001-6801-1839
- name: Masayuki Takeuchi
  role: author
  orcid: https://orcid.org/0000-0002-0207-0665
- name: Keisuke Sagisaka
  role: author
  orcid: https://orcid.org/0000-0002-5089-4271

## Contact agent



## Publisher

organization: Royal Society of Chemistry (RSC)

## Managing organization



## Keyword

- subject: coordination polymer
  schema: not_defined
- subject: STM
  schema: not_defined
- subject: dynamic behaviour
  schema: not_defined
- subject: on-surface
  schema: not_defined
- subject: flexibility
  schema: not_defined
- subject: single molecule
  schema: not_defined
- subject: motion
  schema: not_defined

## Rights

- identifier: cc-by-nc-3.0

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Chemical Science
  issn: '20416520'
  volume: '16'
  issue: '21'
  start_page: 9156
  end_page: 9162

## Conference



## Related item



## Funding

- identifier: JPMXP1224NM5109
  funder_name: National Institute for Materials Science
- identifier: 22K04860
  funder_name: Japan Society for the Promotion of Science
- identifier: 22K05088
  funder_name: Japan Society for the Promotion of Science
- funder_name: Ministry of Education, Culture, Sports, Science and Technology

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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



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## Fileset

- id: 412e5775-0cd3-4247-ab37-327923702b7c
  filename: authorreprints.pdf
  content_type: application/pdf
  size: 1632485
  md5: ae41847f70ee618b591b05fd02562268

## Thumbnail

fileset_id: 412e5775-0cd3-4247-ab37-327923702b7c
filename: authorreprints.pdf