# Michael Addition Reaction‐Assisted Surface Modification of Melanin Particles for Water‐Repellent Structural Color Coating

https://mdr.nims.go.jp/datasets/7f75a3ea-946c-41de-ab49-5b3ebfe2b7ad

## Files

- [mre-journal-S-24-00050.pdf](https://mdr.nims.go.jp/filesets/8acf375f-7bbc-45a9-952f-42dc8bb966c4/download) ([Detail](https://mdr.nims.go.jp/filesets/8acf375f-7bbc-45a9-952f-42dc8bb966c4.md))

## Id

7f75a3ea-946c-41de-ab49-5b3ebfe2b7ad

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-03-04T23:57:24.620024Z

## Updated at

2025-11-18T03:03:41.507441Z

## Published at

2025-12-19T05:11:45.545070Z

## Doi

https://doi.org/10.48505/nims.5914

## First published url

https://doi.org/10.1002/mren.202400040

## Date published

2024-12-18

## Recorded date published

2025-2

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Michael Addition Reaction‐Assisted Surface Modification of Melanin Particles
    for Water‐Repellent Structural Color Coating
  title_type: original
  lang: en

## Description

- description: "There is significant interest in developing paints based on structural
    colors, which do not fade like dyes and pigments. To use these paints as coatings,
    it is necessary to have a technology that can easily impart structural color to
    the material’s surface without changing color based on the viewing angle. In addition,
    water-repellent properties that lead to stain resistance are required for practical
    application. This study applies a structural color coating by synthesizing hydrophobic
    melanin particles using the Michael addition reaction and arranging these particles
    on a substrate at high speed. The resulting coating film shows angle-independent
    structural color due to the amorphous structure of the particle arrangement, and
    the color tone could be controlled by adjusting the particle size. The combination
    of the particle’s hydrophobic surface and the microscopic unevenness from the
    arrangement structure produced a superhydrophobic coating with a contact angle
    of over 160°. Since the Lotus effect, resulting from super-hydrophobic surface,
    can maintain the cleanliness of structural color coatings, the findings of this\r\nresearch
    will contribute to the development of next-generation coating technology."
  description_type: abstract
  lang: und

## Creator

- name: Yui Maejima
  role: author
- name: Mana Tomizawa
  role: author
- name: Ai Takabatake
  role: author
- name: Shin‐ichi Takeda
  role: author
- name: Hiroshi Fudouzi
  role: author
  orcid: https://orcid.org/0000-0003-1442-4667
  organization: National Institute for Materials Science
- name: Keiki Kishikawa
  role: author
- name: Michinari Kohri
  role: author

## Contact agent



## Publisher

organization: Wiley

## Managing organization



## Keyword

- subject: structural colors
  schema: not_defined
- subject: super-hydrophobic
  schema: not_defined
- subject: Colloidal crystal
  schema: not_defined
- subject: Core-shell melanin particles
  schema: not_defined

## Rights

- description: 'This is the peer reviewed version of the following article: Y. Maejima,
    M. Tomizawa, A. Takabatake, S. Takeda, H. Fudouzi, K. Kishikawa, M. Kohri, Michael
    Addition Reaction-Assisted Surface Modification of Melanin Particles for Water-Repellent
    Structural Color Coating. Macromol. React. Eng. 2025, 19, 2400040, which has been
    published in final form at https://doi.org/10.1002/mren.202400040. 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: 2024-12-18
end_date: 2025-12-18

## Journal

- title: Macromolecular Reaction Engineering
  issn: 1862832X
  volume: '19'
  issue: '1'
  article_number: '2400040'

## Conference



## Related item



## Funding

- funder_name: National Institute for Materials Science

## Instrument



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## Measurement method



## Specimen



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## Structure for specimen



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## Fileset

- id: 8acf375f-7bbc-45a9-952f-42dc8bb966c4
  filename: mre-journal-S-24-00050.pdf
  content_type: application/pdf
  size: 1860684
  md5: 3e18ec8ed0ebd51a4e36e800d2e7e423

## Thumbnail

fileset_id: 8acf375f-7bbc-45a9-952f-42dc8bb966c4
filename: mre-journal-S-24-00050.pdf