Alternating copolymerization of CHO and MA catalyzed by the hetero-bimetallic Zn-Yb-Salen complex

Qiu, Shi; Yang, Xiaohui; Zhang, Xingmei; Li, Xuekun; Yang, Juxiang; Lü, Xingqiang

doi:10.1016/j.inoche.2016.09.002

Cited by 6 publications

(2 citation statements)

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“…To date only two heterometallic complexes, 21 86 (Mg/Zn, Fig. 5 ) and 33 100 (Yb/Zn, Fig. 7 ), have been explored in epoxide/anhydride ROCOP.…”

Section: Ring-opening Polymerisationmentioning

confidence: 99%

“…21 also showed excellent selectivity for polyester formation (>99%) and good polymerisation control with M n values up to 10 900 g/mol (bimodal Đ = 1.04, 1.09). 33 was tested in CHO/maleic anhydride (MA) ROCOP with and without a co-catalyst (4-dimethylaminopyridine (DMAP) or triphenylphosphine (TPP)) 100 . In the absence of a co-catalyst, 33 converted 17% CHO in 2.5 h at 110 °C (250:250:1 CHO:MA: 33 ), giving high polyether content (61%).…”

Section: Ring-opening Polymerisationmentioning

confidence: 99%

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Advances in heterometallic ring-opening (co)polymerisation catalysis

2021

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Truly sustainable plastics require renewable feedstocks coupled with efficient production and end-of-life degradation/recycling processes. Some of the most useful degradable materials are aliphatic polyesters, polycarbonates and polyamides, which are often prepared via ring-opening (co)polymerisation (RO(CO)P) using an organometallic catalyst. While there has been extensive research into ligand development, heterometallic cooperativity offers an equally promising yet underexplored strategy to improve catalyst performance, as heterometallic catalysts often exhibit significant activity and selectivity enhancements compared to their homometallic counterparts. This review describes advances in heterometallic RO(CO)P catalyst design, highlighting the overarching structure-activity trends and reactivity patterns to inform future catalyst design.

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“…To date only two heterometallic complexes, 21 86 (Mg/Zn, Fig. 5 ) and 33 100 (Yb/Zn, Fig. 7 ), have been explored in epoxide/anhydride ROCOP.…”

Section: Ring-opening Polymerisationmentioning

confidence: 99%

Section: Ring-opening Polymerisationmentioning

confidence: 99%