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Directed Assembly of Elastin-like Proteins into defined Supramolecular Structures and Cargo Encapsulation In Vitro

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Published on: April 8, 2020

Self-Assembly of Eu³⁺ Complexes Enabling Multistimuli-Responsive Data Encryption.

Lijuan Liang¹, Xiao Yang¹, Xiangyuan Yan¹

¹State Key Laboratory of Natural Product Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China.

Advanced Materials (Deerfield Beach, Fla.)

|September 17, 2025

Summary

This summary is machine-generated.

Researchers developed novel europium-based nanoparticles (Eu-NPs) with triple orthogonal stimuli-responsive luminescence. These advanced materials enable dynamic data encryption and physically unclonable functions for anti-counterfeiting applications.

Keywords:

Eu3+ complexes information encryption multistimuli‐responsive physically unclonable functions (PUFs)supramolecular assembly

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Area of Science:

Materials Science
Nanotechnology
Chemistry

Background:

Multistimuli-responsive luminescent materials are crucial for advanced information encryption.
Integrating orthogonal stimuli-responsiveness, reversibility, and nanoscale control presents significant challenges.

Purpose of the Study:

To develop Eu3+-based nanoparticles (Eu-NPs) with triply orthogonal stimuli-responsive luminescence (pH/thermal/light).
To explore their application in hierarchical encryption platforms and physically unclonable functions (PUFs).

Main Methods:

Synthesized Eu-NPs via J-aggregation-driven self-assembly of a tailored β-diketone complex (Eu(THA)3).
Investigated stimuli-responsive luminescence properties including pH-switching, thermal quenching, and light-modulated FRET.
Fabricated encryption platforms and PUFs utilizing the Eu-NPs' unique characteristics.

Main Results:

Achieved reversible pH-switching between red Eu3+ emission and green ligand aggregation-induced emission (AIE).
Demonstrated dual-mode thermometry with linear thermal quenching.
Enabled UV/Vis-light-modulated FRET for single-particle ON/OFF switching.
Developed hierarchical encryption platforms (labels, QR codes, hydrogels) and PUFs with dual-key authentication and high encoding capacity.

Conclusions:

The developed Eu-NPs offer a new paradigm for adaptive anti-counterfeiting.
This strategy integrates dynamic data encryption with physically unclonable security on a single rare-earth nanoplatform.