# Systematic Study on Swelling/Delamination of Layered Metal Oxides with Quaternary Ammonium Ions: Production of Well‐Shaped/Oversized Unilamellar Nanosheets

https://mdr.nims.go.jp/datasets/ecfd9aae-b78c-4cee-a2ee-1a14dd61b016

## File

- [Manuscript.pdf](https://mdr.nims.go.jp/filesets/bc44f000-5440-4bba-a1ae-52df9a2d415c/download) ([Detail](https://mdr.nims.go.jp/filesets/bc44f000-5440-4bba-a1ae-52df9a2d415c.md))
- [Supporting Information.pdf](https://mdr.nims.go.jp/filesets/a5df8abe-3cda-45ca-aa37-0e83b5ef2a70/download) ([Detail](https://mdr.nims.go.jp/filesets/a5df8abe-3cda-45ca-aa37-0e83b5ef2a70.md))

## Id

ecfd9aae-b78c-4cee-a2ee-1a14dd61b016

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-03-24T06:13:04.428461Z

## Updated at

2025-09-15T23:30:17.991843Z

## Published at

2025-09-15T23:19:10.975378Z

## Doi

https://doi.org/10.48505/nims.5380

## First published url

https://doi.org/10.1002/smtd.202401055

## Date published

2024-09-16

## Recorded date published

2025-3

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: 'Systematic Study on Swelling/Delamination of Layered Metal Oxides with Quaternary
    Ammonium Ions: Production of Well‐Shaped/Oversized Unilamellar Nanosheets'
  title_type: original
  lang: en

## Description

- description: We systematically examined swelling and delamination behaviors of platelet
    single crystals of protonated layered metal oxides with a series of tetraalkylammonium
    (TAA) hydroxide solutions. Upon contact with the solutions, the crystals immediately
    underwent massive expansion by several tens to hundreds of times. The swollen
    crystals could be delaminated into elementary layers by the application of external
    shear force. The exfoliation behavior was dependent on TAA ions, especially in
    terms of yield and lateral size/shape of the delaminated nanosheets. The swollen
    crystals with TAA ions with longer alkyl chains were delaminated almost completely,
    but irregular and fractured small sheets were yielded. Such long alkyl chains
    become entangled on the oxide layer and resulting hydrophobic interactions may
    be responsible for the lateral fragmentation. We found that replacement of aqueous
    solutions with organic solvents to suppress the hydrophobic interactions is effective
    to produce the oversized nanosheets in rectangular shape with sharp edges.
  description_type: abstract
  lang: und

## Creator

- name: Yeji Song
  role: author
- name: Nobuyuki Sakai
  role: author
  orcid: https://orcid.org/0000-0002-9395-6751
- name: Yasuo Ebina
  role: author
  orcid: https://orcid.org/0000-0003-3471-9825
- name: Nobuo Iyi
  role: author
- name: Takayuki Kikuchi
  role: author
  orcid: https://orcid.org/0000-0003-0588-2172
- name: Renzhi Ma
  role: author
  orcid: https://orcid.org/0000-0001-7126-2006
- name: Yasuhiro Ishida
  role: author
- name: Takayoshi Sasaki
  role: author
  orcid: https://orcid.org/0000-0002-2872-0427

## Contact agent



## Publisher

organization: Wiley

## Managing organization



## Keyword

- subject: delamination
  schema: not_defined
- subject: hydrophobic effect
  schema: not_defined
- subject: intercalation
  schema: not_defined
- subject: layered compounds
  schema: not_defined
- subject: oversized high-quality nanosheets
  schema: not_defined

## Rights

- description: 'This is the peer reviewed version of the following article: Y. Song,
    N. Sakai, Y. Ebina, N. Iyi, T. Kikuchi, R. Ma, Y. Ishida, T. Sasaki, Systematic
    Study on Swelling/Delamination of Layered Metal Oxides with Quaternary Ammonium
    Ions: Production of Well-Shaped/Oversized Unilamellar Nanosheets. Small Methods
    2025, 9, 2401055, which has been published in final form at https://doi.org/10.1002/smtd.202401055.
    This article may be used for non-commercial purposes in accordance with Wiley
    Terms and Conditions for Use of Self-Archived Versions. This article may not be
    enhanced, enriched or otherwise transformed into a derivative work, without express
    permission from Wiley or by statutory rights under applicable legislation. Copyright
    notices must not be removed, obscured or modified. The article must be linked
    to Wiley’s version of record on Wiley Online Library and any embedding, framing
    or otherwise making available the article or pages thereof by third parties from
    platforms, services and websites other than Wiley Online Library must be prohibited.'
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2024-09-16
end_date: 2025-09-16

## Journal

- title: Small Methods
  issn: '23669608'
  volume: '9'
  issue: '3'

## Conference



## Related item



## Funding

- identifier: JPMJCR22B1
  funder_name: Japan Science and Technology Agency
- identifier: JPMJCR17N1
  funder_name: Japan Science and Technology Agency

## Instrument



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## Measurement method



## Specimen



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## Fileset

- id: bc44f000-5440-4bba-a1ae-52df9a2d415c
  filename: Manuscript.pdf
  content_type: application/pdf
  size: 4665647
  md5: 6082e1a907bf7d91519088b398c43d7b
- id: a5df8abe-3cda-45ca-aa37-0e83b5ef2a70
  filename: Supporting Information.pdf
  content_type: application/pdf
  size: 4518884
  md5: 842bc43a7c937381f0500a4d4eecf6c1

## Thumbnail

fileset_id: a5df8abe-3cda-45ca-aa37-0e83b5ef2a70
filename: Supporting Information.pdf