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Cover Picture: Anionic Copolymerization of Carbonyl Sulfide with Epoxides via Alkali Metal Alkoxides (Chin. J. Chem. 7/2018)
Author(s) -
Zhang ChengJian,
Yang JiaLiang,
Hu LanFang,
Zhang XingHong
Publication year - 2018
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201880071
Subject(s) - chemistry , alkali metal , copolymer , carbonyl sulfide , catalysis , sulfide , sulfur , polymer chemistry , polymer , inorganic chemistry , organic chemistry
The cover picture shows a protocol of an anionic copolymerization of carbonyl sulfide (COS) with epoxides via alkali metal alkoxides. COS is an analogue of carbon dioxide (CO 2 ), and can be converted to CO 2 via the carbonic anhydride enzymes widely existing in nature. It causes acid rain, ozonosphere damage and haze by a series of photochemical reactions. Very simple and low‐cost alkali metal alkoxides are shown as effective catalysts, affording highly transparent poly(monothiocarbonate)s with 100% alternating degree, >99% tail‐to‐head (T‐H) content, high number‐average molecular weights with narrow molecular weight distributions. This is an environment‐friendly and atom‐economic process for making sulfur‐containing polymers. More details are discussed in the article by Zhang et al. on page 625–629.