Ring-opening terpolymerisation of phthalic thioanhydride with carbon dioxide and epoxides

Abstract

Seeking to expand the portfolio of accessible polymer structures from CO2 waste, we report the ring-opening terpolymerisation (ROTERP) of phthalic thioanhydride with CO2 and epoxides forming statistical poly(ester- -thioester-carbonates) employing...

Fast and switchable ring-opening polymerization of biorenewable omega-substituted lactones towards sustainable copolymers with facile control over monomer sequences

“…This phenomenon has been discussed in detail in previous works by other groups. 29,53 Further Semi-logarithmic plot analysis demonstrated the first-order feature, which is also consistent with the living polymerization features (Fig. 2c).…”

Improved access to polythioesters by heterobimetallic aluminium catalysis

“…In contrast to the parent linear polymer which shows good solubility in organic solvents like DCM, no solubility (95% gel fraction) is observed for the vulcanised material. Furthermore, while the parent linear thioester could be degraded by aminolysis in methanolic ammonia, 26 no degradation was observed for the vulcanised materials further substantiating crosslinking.…”

“…Tackling some of these problems, our group established the use of methoxy-substituted bisphenoxyimine based chromium catalysts in the ROCOP of phthalic thioanhydride (PTA) or CS 2 with cyclohexene oxide (CHO) to yield sulfurated polymers. [24][25][26] These could solubilise alkali metal acetates AMOAc (AM = Li, Na, K, Rb, Cs) by means of coordination to an all-oxygen donor site in the ligand sufficiently, to form heterobimetallic complexes that also form in situ during catalysis, and these then facilitate PTA/CHO or CS 2 /CHO ROCOP. Viewed differently these complexes coordinatively enable the use of cheap AMOAc salts as cocatalysts in place of onium salts.…”

Easy access to high-melting sulfurated copolymers and their self-assembling block polymers from phenylisothiocyanate and oxetane

“…This can be explained by two cooccuring initiation events starting a very controlled PhNCS/OX copolymerisation. 42 IR spectroscopy let us identify aliphatic ester bands (ṽ = 1737 cm -1 , see ESI Figure S16) from initiation by the acetate coligands of LCrRb whereas end-group analysis by the 31 P-test also unambiguously shows the formation of alcohol chain ends (see ESI Figure S17). Combined this suggests the formation of -OAc-OH functional chains.…”