A New Kind of Nonconventional Luminogen Based on Aliphatic Polyhydroxyurethane and Its Potential Application in
Zihao Feng1,2,3,4, Wei Zhao1,2,3,4, Zhenhua Liang1
1College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, People's Republic of China.
ACS Applied Materials & Interfaces
|February 19, 2020
Summary
Researchers developed novel nonconjugated organic luminogens from dynamic covalent cross-linked polyhydroxyurethane. These materials offer strong fluorescence, mechanical strength, and self-healing, enabling new anticounterfeiting applications using light-mediated printing.
Area of Science:
- Materials Science
- Polymer Chemistry
- Organic Electronics
Background:
- Nonconjugated organic luminogens offer advantages over traditional conjugated types, including easier synthesis and better biocompatibility.
- Dynamic covalent chemistry enables the creation of materials with tunable properties and self-healing capabilities.
- Anticounterfeiting technologies are crucial for protecting products in industries like pharmaceuticals and food.
Purpose of the Study:
- To synthesize and characterize a novel nonconventional luminogen based on dynamic covalent cross-linked polyhydroxyurethane.
- To investigate the photophysical and mechanical properties of the new luminogen.
- To develop a novel anticounterfeiting method using the developed luminogen and light-mediated screen printing.
Main Methods:
- Synthesis of polyhydroxyurethane using aliphatic polyfunctional cyclic carbonate and amines.
- Characterization of photophysical properties (fluorescence emission) and mechanical properties (shape memory, self-healing).
- Development and application of a light-mediated ink-free screen printing technique for anticounterfeiting paper.
Main Results:
- A new class of nonconventional luminogens exhibiting intrinsic strong solid-state fluorescence was successfully synthesized.
- The luminogens possess excellent mechanical properties, including shape memory and self-healing.
- The luminescence intensity is tunable by controlling the degree of polymer cross-linking.
- A novel light-mediated ink-free screen printing method was developed for creating stable anticounterfeiting information on paper.
Conclusions:
- The developed dynamic covalent cross-linked polyhydroxyurethane luminogens offer a unique combination of optical and mechanical properties.
- The light-mediated screen printing technique provides a facile and cost-effective approach for anticounterfeiting applications.
- These materials show significant potential for combating counterfeiting in pharmaceuticals, packaging, and the food industry.
