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Dynamic Covalent Sulfur-Selenium Rich Polymers via Inverse Vulcanization for High Refractive Index, High
Jinhong Jia1, Yao Chai1, Xingwei Xun1
1College of Chemistry and Chemical Engineering, Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Material, Northwest Normal University, Lanzhou, Gansu, 730070, P. R. China.
Macromolecular Rapid Communications
|January 15, 2025
Summary
This study introduces a new low-temperature method for creating sulfur-selenium polymers. These novel materials offer excellent optical properties and stability for advanced applications.
Area of Science:
- Materials Science
- Polymer Chemistry
Background:
- Inverse vulcanization (IV) advancements have yielded sulfur-rich polymers.
- Current IV methods face limitations: high temperatures, restricted applications, and hazardous hydrogen sulfide (H 2 S) gas generation.
Purpose of the Study:
- To develop a novel, low-temperature induced IV method for sulfur-selenium rich polymers.
- To investigate the optical and physical properties of the synthesized materials.
Main Methods:
- Utilized selenium octanoic acid in an induced IV process at 100-120 °C.
- Characterized the resulting sulfur-selenium rich polymers for optical properties, environmental stability, and adhesive strength.
Main Results:
- Achieved full atom economy at low reaction temperatures.
- Synthesized sulfur-selenium rich polymers with a high refractive index (up to 1.89 at 65% S-Se content).
- Demonstrated excellent UV shielding (blocking UV, 95.1-98.6% visible light transmission) and transparency.
- Exhibited environmental stability and strong adhesive properties (lifting up to 20 kg).
Conclusions:
- The developed low-temperature method offers a safer and more versatile alternative to traditional IV.
- The unique optical and adhesive properties of these sulfur-selenium polymers make them suitable for high-precision optical instruments.
