| Issue |
E3S Web of Conf.
Volume 406, 2023
2023 9th International Conference on Energy Materials and Environment Engineering (ICEMEE 2023)
|
|
|---|---|---|
| Article Number | 02018 | |
| Number of page(s) | 4 | |
| Section | Energy Conservation Technology and Energy Sustainability | |
| DOI | https://doi.org/10.1051/e3sconf/202340602018 | |
| Published online | 31 July 2023 | |
Polymerization of Aryl Polyisocyanides Catalyzed by N-Heterocyclic Carbene-Ligated Scandium Trialkyl Complex
School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
a liujia98jl@163.com
b liuyi8991@163.com
* swzhang@bit.edu.cn
Polyisocyanide has attracted continuous attention because of its stable helical rod structure and its wide application, it has a unique π-conjugated system in which the carbon-nitrogen double bond in each unit is twisted along the polymeric backbone to form a helical configuration. In this paper, a series of aryl isocyanides polymers are prepared using N-heterocyclic carbene-ligated scandium trialkyl complex 1 (IPr)Sc(CH2SiMe3)3 as the catalyst and 2 equiv. [Ph3C][B(C6F5)4] as the co-catalyst. The catalyst can convert 96% of 100 equiv. monomer in 5 minutes and the activity of the polymerization can reach 329 kg of polymer molSc-1 h-1. Two optically active polymers are obtained by using chiral monomers, they show strong CD signal at 364 nm and the two signals are opposite.
© The Authors, published by EDP Sciences, 2023
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