# Programmed Assembly of IrAu<sub>12</sub> Nanoclusters into Dimers and Trimers: Electron Microscopy Observation and Spectroscopic Characterization

https://mdr.nims.go.jp/datasets/7a7b2f74-4e67-40f3-9534-c20d7904b90d

## File

- [MS(nl-2025-02770z)R1clean.pdf](https://mdr.nims.go.jp/filesets/da65ee1c-2470-41cc-8fcc-b71c69411c1b/download) ([Detail](https://mdr.nims.go.jp/filesets/da65ee1c-2470-41cc-8fcc-b71c69411c1b.md))

## Id

7a7b2f74-4e67-40f3-9534-c20d7904b90d

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-08-14T22:55:06.718728Z

## Updated at

2025-08-18T01:45:19.073921Z

## Published at

2026-07-29T23:29:14.617413Z

## Doi

https://doi.org/10.48505/nims.5629

## First published url

https://doi.org/10.1021/acs.nanolett.5c02770

## Date published

2025-08-13

## Recorded date published

2025-8-13

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: 'Programmed Assembly of IrAu<sub>12</sub> Nanoclusters into Dimers and Trimers:
    Electron Microscopy Observation and Spectroscopic Characterization'
  title_type: original
  lang: en

## Description

- description: Ligand-protected gold nanoclusters have attracted attention as building
    blocks for functional materials. In this study, we have demonstrated the programmed
    assembly of the icosahedral Ir@Au12 nanoclusters into a dimer, a linear trimer,
    linear oligomers, or a triangular trimer via the reaction between the IrAu12 with
    predefined binding sites and bi- or tri-dentate isocyanide linkers. The formation
    of the intended structures was confirmed by high-angle annular dark-field scanning
    transmission electron microscopy using a newly developed sampling protocol. Statistical
    analysis of the inter-particle distances provided quantitative structure models
    consistent with the theoretically predicted structures. The linear oligomers exhibited
    a new absorption peak at ~480 nm. Theoretical calculations indicated that the
    electron transfers from the IrAu12 moiety to the linker ligand or another IrAu12
    moiety involve the absorption. This study demonstrates that programmed assemblies
    of Au nanoclusters will provide an opportunity to elucidate how novel collective
    properties arise through assembly.
  description_type: abstract
  lang: und

## Creator

- name: Yuto Fukumoto
  role: author
- name: Shinjiro Takano
  role: author
  orcid: https://orcid.org/0000-0001-9262-5283
- name: Yosuke Asami
  role: author
- name: Haru Hirai
  role: author
  orcid: https://orcid.org/0000-0002-2778-0620
- name: Koji Harano
  role: author
  orcid: https://orcid.org/0000-0001-6800-8023
- name: Tatsuya Tsukuda
  role: author
  orcid: https://orcid.org/0000-0002-0190-6379

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: gold nanoclusters
  schema: not_defined
- subject: programmed assembly
  schema: not_defined
- subject: transmission electron microscopy
  schema: not_defined
- subject: photoinduced intercluster electron transfer
  schema: not_defined

## Rights

- description: This document is the Accepted Manuscript version of a Published Work
    that appeared in final form in Nano Letters, copyright © 2025 American Chemical
    Society after peer review and technical editing by the publisher. To access the
    final edited and published work see https://doi.org/10.1021/acs.nanolett.5c02770.
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2025-07-30
end_date: 2026-07-30

## Journal

- title: Nano Letters
  issn: '15306984'
  volume: '25'
  issue: '32'
  article_number: acs.nanolett.5c02770

## Conference



## Related item



## Funding

- identifier: JPMJCR20B2
  funder_name: Core Research for Evolutional Science and Technology
- identifier: JP23H00284
  funder_name: Japan Society for the Promotion of Science
- identifier: JP23H01917
  funder_name: Japan Society for the Promotion of Science
- identifier: JP23H04874
  funder_name: Japan Society for the Promotion of Science
- identifier: JP25KJ0897
  funder_name: Japan Society for the Promotion of Science
- funder_name: University of Tokyo

## 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: da65ee1c-2470-41cc-8fcc-b71c69411c1b
  filename: MS(nl-2025-02770z)R1clean.pdf
  content_type: application/pdf
  size: 7840598
  md5: 4dea6fa6a732fd422fcc20ebf014760c

## Thumbnail

fileset_id: da65ee1c-2470-41cc-8fcc-b71c69411c1b
filename: MS(nl-2025-02770z)R1clean.pdf