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Average Octet Radical Polymer: A Stable Polyphenoxyl with Star-Shaped π Conjugation
Hiroyuki Nishide1, Makoto Miyasaka1, Eishun Tsuchida1
1Department of Polymer Chemistry, Waseda University, Tokyo 169-8555 (Japan), Fax: (+81) 3-3209-5522.
Angewandte Chemie (International Ed. in English)
|May 2, 2018
Summary
Star-shaped polyradical 1 exhibits a high average spin quantum number of 7/2. This stable, π-conjugated polymer is a promising candidate for creating materials with very high spin concentrations.
Area of Science:
- Organic Chemistry
- Materials Science
- Quantum Mechanics
Background:
- π-conjugated polyradicals are of interest for their unique magnetic properties.
- Achieving high spin states in organic materials is a key challenge in molecular magnetism.
Purpose of the Study:
- To synthesize and characterize a novel star-shaped, π-conjugated polyradical.
- To investigate the spin properties and stability of the synthesized polymer.
Main Methods:
- Synthesis of the star-shaped polyradical (Polymer 1).
- Characterization of its spin quantum number and spin concentration.
- Assessment of its thermal stability at room temperature.
Main Results:
- Polymer 1 displays an average spin quantum number of 7/2.
- A high spin concentration of 0.8 per monomer unit was observed.
- The polymer demonstrated stability at room temperature.
Conclusions:
- The synthesized polyradical is a stable material with a significant average spin quantum number.
- Polymer 1 represents a viable precursor for developing organic polymers with exceptionally high spin.
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