# On-surface synthesis of nitrogen-doped nanographene with an [18]annulene pore on Ag(111)

https://mdr.nims.go.jp/datasets/7f6d58cf-624f-4d58-a162-4d3583e2d576

## File

- [20231020 Com Chem s42004-023-01023-z.pdf](https://mdr.nims.go.jp/filesets/3ef92ee4-ca64-4e47-b248-fcd5ff66349b/download) ([Detail](https://mdr.nims.go.jp/filesets/3ef92ee4-ca64-4e47-b248-fcd5ff66349b.md))

## Id

7f6d58cf-624f-4d58-a162-4d3583e2d576

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2023-12-27T02:28:17.739972Z

## Updated at

2024-01-05T13:12:35.776649Z

## Published at

2023-12-28T07:30:27.415594Z

## Doi



## First published url

https://doi.org/10.1038/s42004-023-01023-z

## Date published

2023-10-20

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: On-surface synthesis of nitrogen-doped nanographene with an [18]annulene
    pore on Ag(111)
  title_type: original
  lang: en

## Description

- description: On-surface synthesis is of importance to fabricate low dimensional
    carbon-based nanomaterials with atomic precision. Here, we synthesize nitrogen-doped
    nanographene with an [18]annulene pore and its dimer through sequential reactions
    of debromination, aryl–aryl coupling, cyclodehydrogenation and C–N coupling on
    Ag(111) from 3,12-dibromo-7,8-diaza[5]helicene. The inner structures of the products
    were characterized with scanning tunneling microscopy with a CO terminated tip
    at low temperature. Furthermore, the first four unoccupied electronic states of
    the nanographene were investigated with a combination of scanning tunneling spectroscopy
    and theoretical calculations. Except for the LUMO + 2 state observed at +1.3 V,
    the electronic states at 500 mV, 750 mV and 1.9 V were attributed to the superatom
    molecular orbitals at the [18]annulene pore, which were significantly shifted
    towards the Fermi level due to the hybridization with the confined surface state.
  description_type: abstract
  lang: en

## Creator

- name: Kewei Sun
  role: author
  orcid: https://orcid.org/0000-0002-1835-243X
  organization: National Institute for Materials Science
- name: Donglin Li
  role: author
  organization: National Institute for Materials Science
- name: Takahito Kaihara
  role: author
  organization: Osaka University
- name: Satoshi Minakata
  role: author
  organization: Osaka University
- name: Youhei Takeda
  role: author
  organization: Osaka University
- name: Shigeki Kawai
  role: author
  orcid: https://orcid.org/0000-0003-2128-0120
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: on-surface synthesis
  schema: not_defined
- subject: nanographene
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Communications Chemistry
  issn: '23993669'
  volume: '6'
  article_number: '228'

## Conference



## Related item



## Funding

- identifier: 22H00285
  funder_name: Japan Society for the Promotion of Science

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 3ef92ee4-ca64-4e47-b248-fcd5ff66349b
  filename: 20231020 Com Chem s42004-023-01023-z.pdf
  content_type: application/pdf
  size: 3936969
  md5: 64f7fb9803ab754aa29d5300b11cc4a4

## Thumbnail

fileset_id: 3ef92ee4-ca64-4e47-b248-fcd5ff66349b
filename: 20231020 Com Chem s42004-023-01023-z.pdf