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Related Experiment Video

Updated: Sep 18, 2025

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Chiral Cryptographic Key-Based Fluorescence Encryption Enabled by Stimuli-Responsive Metal-Organic Frameworks.

Han Xie1, Wei-Qi Wang1, Yan Liu2

  • 1Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng, 224051, P.R China.

Angewandte Chemie (International Ed. in English)
|June 26, 2025
PubMed
Summary

This study introduces a novel chiral lock-and-key fluorescence encryption system using a cyclodextrin metal-organic framework (CDMOF). It achieves ultra-high security by enabling enantioselective discrimination of keys for advanced data protection.

Keywords:
ChiralityEnantioselective discriminationFlexible sensorHigh‐security level chiral encryptionMetal–organic frameworks

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Area of Science:

  • Materials Science
  • Supramolecular Chemistry
  • Organic Chemistry

Background:

  • Traditional encryption methods face increasing data forgery threats.
  • Current fluorescence encryption lacks robust security due to simple, reversible responses.
  • Chiral recognition offers potential for enhanced cryptographic security.

Purpose of the Study:

  • To develop a novel chiral lock-and-key fluorescence encryption system.
  • To achieve enantioselective discrimination for ultra-secure data encryption.
  • To demonstrate a practical, high-security encryption strategy using stimuli-responsive materials.

Main Methods:

  • Fabrication of a chiral cyclodextrin metal-organic framework (CDMOF) termed Zole@CDMOF.
  • Utilizing Zole@CDMOF for enantioselective recognition of phenylethylamine (PEA) enantiomers as keys.
  • Employing fluorescence turn-on mechanism triggered by specific key-lock interactions and acetyl bond cleavage.
  • Developing a flexible sensor and a barcode chiral encryption model for practical application.

Main Results:

  • The Zole@CDMOF system demonstrated enantioselective fluorescence turn-on triggered by PEA enantiomers.
  • Enantioselectivity was attributed to thermodynamic differences and distinct hydrogen-bonding interactions.
  • A flexible sensor was created for visual enantiomeric excess indexing.
  • A quadruply encrypted system with ultra-high security (1 in 2 million key combinations) was established.

Conclusions:

  • Pioneered the first chiral cryptographic key in fluorescence encryption.
  • Established a novel, ultra-secure encryption system with practical sensing capabilities.
  • Opened new avenues for advanced chiral sensing, stimuli-responsive materials, and secure data encryption.