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September 10, 2025SmallOpen Access

Dual‐Stimuli Chromogenic Membranes for Optical Security: Photochromic and Halochromic Anti‐Counterfeiting Applications

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Authors

LLLin‐Ruei LeeYCYi‐Fan ChenPFPi‐Chuan Fan

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Overview

This chromogenic platform demonstrates rapid photochromic and halochromic color changes for enhanced anti-counterfeiting, suggesting practical applications in security technology.

Key Points

  • The membrane shows reversible color changes, switching from pale to magenta and then to yellow within seconds.
  • Characterization techniques confirm successful surface modification and excellent optical responsiveness in 0.4 to 4 seconds.
  • Anodic aluminum oxide membranes were functionalized via thiol-yne chemistry and photopatterning for enhanced performance.
  • This work supports advancements in anti-counterfeiting technologies, promising high speed, precision, and stability.

Cite This Study

Lee et al. (2025) studied this question.

synapsesocial.com/papers/68c1ae7054b1d3bfb60e64achttps://doi.org/10.1002/smll.202507008
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Also Consider

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  4. 4Photochromic Spiropyran-Based Dual-Emitting Luminescent Hybrid Films for Dynamic Information Anticounterfeiting2024 · 13 citations
  5. 5Fine‐Tuning Dual Absorption Enables Fluorans Multicolor Hydrochromic Switching <sup>†</sup>2025