Synthesizing high polymer material is the indispensable corporeal data in social progress. However, a large amount of current high polymer colophony are excessive depend on petrifaction resource and difficult degradation reclaims, caused resources waste and excessive carbon to discharge, the environmental problem such as white pollution, block up plastic those who wait for high polymer material but durative development. Development is new-style but the scientific port with be had in order to replace a large amount of traditional high polymer colophony principal mixes material of durative high polymer to use value actually, it is the domain of heat forward position of course of current high polymer, but report at present but durative high polymer is existing monomer price is high, cannot the problem that function of many industry production, its physics cannot contend with a large amount of high polymer colophony, its production and application suffer badly be restricted. Group of big Miao task devotes oneself to researcher of key laboratory of organic chemistry of metal of institute of organic chemistry of Shanghai of academy of sciences new-style can last the catalysis of high polymer material is synthesized (Trends Chem. 2019, 1, 148; Angew. Chem. Int. Ed. 2020, 59, 2664) . Recently, this research group is in be based on blame tension preparation of the ester inside generation of carbonyl of sulfur of 5 yuan of annulus can gain new headway in the research of material of durative high polymer. This job is raw material with the ester inside 5 yuan of annulus, although this is generous of cheap of a kind of price but second birth compound, however polymerization of small, open loop lacks the annulus pulling force that “ was not compose of tensional ” loop to bring about them driving force, aux used to is called “ cannot the monomer of aggregate ” . The researcher adopts monomer design, reaction of one pace vulcanization introduces sulfur atom inside 5 yuan of annulus in ester, receive rate synthesis mensurably in order to be close to new-style monomer of the ester inside generation of carbonyl of sulfur of 5 yuan of annulus, use the happening with alternative course of its open loop Alkyl-oxygen key ruptures and of S/O isomerization react in coordination, is not common Acyl-oxygen key ruptures, compose established group of a kind of not reversible open loop (IROP) new strategy. As aggregate as traditional open loop (the essential difference of ROP) depends on, this strategy is thermodynamic driving force with isomerization reaction, is not annulus tension, make monomer of annulus of tension of this kind of blame be in thereby room temperature is even group produces below high temperature, be based on the ester inside 5 yuan of annulus for industrialized synthesis but durative high polymer offerred a possibility. Consider to discover, system of catalysis of TBu-P4/Ph2CHOH of phosphorous nitrile alkali can be restrained effectively 2 get together and answer bite deputy reaction, but the ester inside acting man of carbonyl of sulfur of γ- of catalysis of high active ground reachs his methylic ramification is below industrial temperature (80–100 °C) IROP, even if in monomer the condition of large proportion excessive falls (1600 equivalent) , the ration of achievable monomer inside 4-6 hour is changed, get number all the element measures those who be as high as 251.0 Kg/mol to get together sulfur ester. Theoretical calculation considers to make clear, the Ph2CHOH constituent in catalytic system is removing distinctive proton to move is caused and control a double function that bites deputy reaction in aggregate process, assured group can charge a sex; In addition, alkyl-oxygen key ruptures and of S/O isomerization react in coordination the product that can make thermodynamic stability, provide thermodynamic driving force for aggregate reaction. Physical function test makes clear, this job complex gets together (the ester inside γ- sulfur Dai Ding) it is to have tall melt temperature (~100 °C) crystallization sex is plastic, rupture percentage elongation and tensile strength are respectively 412.5% with 30 MPa, its heat up function and mechanical function to be able to be rivalled with commercialized low density polyethylene, can spark in outside stimulation next happening efficient the degradation that can accuse, be a kind new-style high-powered but material of the durative high polymer that contain sulfur. This job developed the new strategy of polymerization of a kind of not reversible open loop, with S/O isomerization reaction is the thermodynamic driving force of open loop polymerization, the annulus tension of tradition of and rather than, broke monomer of blame tension annulus cannot normal temperature / the confine of high temperature polymerization, for ” of “ challenge sex the ester inside 5 yuan of annulus is changed into function of each different but material of durative high polymer offerred new approach. Relevant research achievement is a problem with Towards High-performance Sustainable Polymers Via Isomerization-driven Irreversible Ring-opening Polymerization Of Five-membered Thionolactones, publish on Nature Chemistry. Research work gets Wang Kuancheng of committee of science foundation committee, Shanghai science and technology, Chinese Academy of Sciences lead forefathers to just plan (group of international of Lu Jia stannum) aid financially.
