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Citation: Xin-hua Wan, Xian-hong Wang. Metal-free Access to Precise Synthesis of Sulfur-containing Polymers[J]. Acta Polymerica Sinica, ;2018, 0(7): 773-775. doi: 10.11777/j.issn1000-3304.2018.18139 shu

Metal-free Access to Precise Synthesis of Sulfur-containing Polymers

Xin-hua Wan ^1,, ,
Xian-hong Wang ^2,,

1.
Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871
2.
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Corresponding author: Xin-hua Wan, xhwan@pku.edu.cn Xian-hong Wang, xhwang@ciac.ac.cn
Received Date: 9 June 2018

Sulfur-containing polymers are important functional materials and can be used as optical, anti-corrosion and antifouling materials. Using C1 monomers (i.e. carbonyl sulfide (COS), carbon disulfide (CS₂)) to copolymerize with epoxides have been rapidly developed in very recent years. Recently, Xing-Hong Zhang et al. reported a metal-free living copolymerization of COS with epoxides via the cooperative catalysis of organic Lewis pairs including organic bases and thioureas as hydrogen-bond donors, afforded poly(monothiocarbonate)s with 100% alternating degree, > 99% tail-to-head content, high molecular weight (up to 9.84 × 10 ⁵) and narrow molecular weight distributions (1.13 – 1.23). The turnover frequencies (TOFs) of the catalyst are as high as 112 h ⁻¹ at 25 °C. Kinetic and mechanistic results suggest that the supramolecular specific recognition of thiourea to epoxide and base to COS promoted the copolymerization cooperatively. The synthesis of sulfur-containing polymer developed by Xing-Hong Zhang and co-workers is very promising to the utilization of C1 monomers derived from the use of oil and coal.
- Sulfur-containing polymers,
- Carbonyl sulfide,
- Epoxide,
- Organocatalysts
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