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A Urease-Containing Fluorescent Hydrogel for Transient Information Storage.
Xiaoxia Le1,2,3, Hui Shang1, Huizhen Yan1
1Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China.
Angewandte Chemie (International Ed. in English)
|November 2, 2020
Summary
This study introduces a novel fluorescent hydrogel that stores information using urease and a DEAN-H+ complex. The hydrogel self-erases information within minutes, enhancing data security.
Area of Science:
- Materials Science
- Chemical Engineering
- Information Security
Background:
- Improper handling of decrypted data risks confidential information leakage.
- Developing self-erasing decrypted data is crucial for enhanced information security.
- Fluorescent materials offer potential for data storage and security applications.
Purpose of the Study:
- To develop a urease-containing fluorescent hydrogel for multistage information security protection.
- To investigate a novel method for encoding and decoding information using fluorescence changes.
- To achieve self-erasing capabilities for stored information.
Main Methods:
- Fabrication of a fluorescent hydrogel using protonated 4-(N,N-dimethylaminoethylene) amino-N-allyl-1,8-naphthalimide (DEAN-H+) and urease.
- Information encoding via metal ion coordination (e.g., Zn2+) with DEAN.
- Information decoding and self-erasure triggered by urea, leading to fluorescence reduction.
Main Results:
- The hydrogel exhibits fluorescence that changes in response to urea exposure.
- Urease catalyzes urea hydrolysis, producing ammonia that quenches fluorescence.
- Metal coordination modulates the fluorescence decay rate, enabling information readout.
- The encoded information is automatically erased within minutes.
Conclusions:
- A urease-containing fluorescent hydrogel provides a platform for multistage information security.
- The material demonstrates a novel approach to self-erasing data storage.
- This research opens new avenues for designing advanced information storage materials.
