Local stress-assisted fabrication of supramolecular structural color materials for anti-counterfeiting applications.

Supramolecular colloidal photonic crystals possess the advantages of both photonic crystals and supramolecular materials to prepare dynamically reversible structural color materials with high flexibility, functionality and recyclability. However, the driving force for the ordered arrangement of colloidal nanoparticles is limited since the significant increase of the viscosity in the system, consequently the shear-induced technique with complicated equipment needs to be applied to achieve the assembly of colloidal nanoparticles. Herein, we report a local stress-assisted assembly strategy for fabricating high-performance supramolecular colloidal photonic crystal films without the need of complex shearing equipment. The introduced local stress promotes the rapid dissociation of disordered colloidal aggregates, enabling the formation of highly ordered colloidal arrays through electrostatic interactions and solvation layers. Based on this strategy, a series of functional supramolecular structural color materials have been fabricated, demonstrating unique applications in display, anti-counterfeiting, and information encryption with the excellent recyclability and reusability.

• Publication year

  2025

• Venue

  Journal of Colloid and Interface Science

• Publication date

  2025-08-30

• Fields of study

  Medicine, Materials Science, Engineering

• Identifiers
  DOI 10.1016/j.jcis.2025.138884PMID 40902486
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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