Download file (7.39MB)
Download as zip (6.91MB)

コレクション

引用

説明:

The assembled structures of melanin particles, i.e., colloidal particles coated with a melanin-like polydopamine (PDA) layer, create vivid structural colors. While the thickness of the PDA layer influences the particle arrangement and optical properties, the underlying mechanism has remained controversial. We demonstrate that the water-swelling characteristics of PDA are crucial factors governing the dispersion and aggregation of these particles in solution. Detailed comparisons between dry and wet conditions revealed that the PDA layer readily absorbs water molecules, which leads to significant swelling in the thicker layers. The swelling of the PDA layers determined whether the particles remained dispersed or partially aggregated in the water, ultimately controlling the particle arrangement in the dry state once the water evaporated. These findings provide insights into the self-assembly of colloidal particles and offer a strategy for tuning the periodic particle order. This feature is pivotal for various applications in optical and sensing technologies.

権利情報:

• In Copyright
  

  This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, 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.langmuir.5c01855.

キーワード: polydopamine, structural colors, colloidal crystal, core shell, amorphous, Bragg diffraction, iridescent

刊行年月日: 2025-09-02

出版者: American Chemical Society (ACS)

掲載誌:

• Langmuir (ISSN: 07437463) vol. 41 issue. 34 p. 22762-22773

研究助成金:

• Japan Society for the Promotion of Science JP24H01697
• Japan Society for the Promotion of Science JP23H02018
• National Institute for Materials Science 2024-042
• National Institute for Materials Science 2025-011
• Support for Pioneering Research Initiated by the Next Generation J24HJ00045

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5915

公開URL: https://doi.org/10.1021/acs.langmuir.5c01855

関連資料:

その他の識別子:

連絡先:

更新時刻: 2026-02-14 20:51:38 +0900

MDRでの公開時刻: 2026-08-21 08:25:49 +0900