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A General Strategy for Developing Ultrasensitive "Transistor-Like" Thermochromic Fluorescent Materials for Multilevel
Ke Zhang1, Xiaobo Zhou1, Shijie Li1
1Nantong Key Laboratory of Public Health and Medical Analysis, School of Public Health, Nantong University, Nantong, Jiangsu, 226019, China.
Advanced Materials (Deerfield Beach, Fla.)
|July 12, 2023
Summary
Novel thermochromic fluorescent materials (TFMs) offer enhanced sensitivity and tunable colors for multilevel information encryption. These materials demonstrate significant fluorescence changes with temperature, enabling secure data storage and display applications.
Area of Science:
- Materials Science
- Chemistry
- Optoelectronics
Background:
- Thermochromic fluorescent materials (TFMs) are promising for information encryption.
- Current TFMs face limitations in sensitivity, color tunability, and temperature range.
Purpose of the Study:
- To develop highly sensitive TFMs with tunable emission for multilevel information encryption.
- To investigate structure-property relationships in TFMs.
Main Methods:
- Utilized polarity-sensitive donor-acceptor-donor (D-A-D) fluorophores as emitters.
- Employed long-chain alkanes as thermosensitive matrices.
- Systematically studied structure-function relationships.
Main Results:
- Achieved over 9500-fold fluorescence enhancement with temperature change.
- Demonstrated ultrahigh relative temperature sensitivity up to 80% K-1.
- Tuned emission color from 450-650 nm.
Conclusions:
- The novel TFMs exhibit superior performance for information encryption.
- These materials enable temperature-based multicolored displays and multilevel encryption.
- Provides a new strategy for designing efficient fluorescent probes.
