The development of living radical polymerization(LRP)methods has served as one of the most remarkable milestones for polymer chemistry.Independent LRP method requires specific conditions,catalysts,and monomers,which f...The development of living radical polymerization(LRP)methods has served as one of the most remarkable milestones for polymer chemistry.Independent LRP method requires specific conditions,catalysts,and monomers,which fits certain scenes,while it is unfit for others.While the combination of different methods integrates the advantages of various LRP methods,not all methods could be combined directly due to the complexity of the mutual influence between them.To overcome this,we established a criterion that could tell whether a combination of LRP methods was effective or not.With the help of this criterion,the dual concurrent ATRP-RAFT was constructed by the combination of ICAR-ATRP and RAFT.The binary LRP method allowed for(1)the expansion of monomer range for RAFT;(2)the reduction of CuII loading for ICAR-ATRP;(3)the enhanced control of dispersity.We believe that this research provides a different route for the development of the LRP methods.展开更多
Polymerizations with multiple mechanisms performed simultaneously are promising but very challenging. As the key limitation,the complicated mutual influence between different mechanisms can be hardly defined and measu...Polymerizations with multiple mechanisms performed simultaneously are promising but very challenging. As the key limitation,the complicated mutual influence between different mechanisms can be hardly defined and measured. Herein we establish a universal framework for the assessment of mutual influence between different mechanisms using binary polymerization for demonstration. The kinetics and thermodynamics of polymerization with two mechanisms are compared with the corresponding homopolymerization and the difference is expressed by a hybrid function. The hybrid function is composed of a hybrid parameter that describes the extent of mutual influence and a function that describes necessary conditions for mutual influence to occur. The extent of mutual influence can be calculated using kinetic and thermodynamic data without details of reaction mechanisms, for the first time providing a straightforward method to assess the mutual influence between different polymerization mechanisms.We envision that the method has potential in more complex systems with multiple mechanisms/monomers with mutual influence.展开更多
基金supported by the National Key R&D Program of China(2023YFF0724100)Yangtze River Scholar Program(WF221411002)+2 种基金National Natural Science Foundation of China(52421006,22001166)State Key Laboratory of Polyolefins and CatalysisShanghai Key Laboratory of Catalysis Technology for Polyolefins.
文摘The development of living radical polymerization(LRP)methods has served as one of the most remarkable milestones for polymer chemistry.Independent LRP method requires specific conditions,catalysts,and monomers,which fits certain scenes,while it is unfit for others.While the combination of different methods integrates the advantages of various LRP methods,not all methods could be combined directly due to the complexity of the mutual influence between them.To overcome this,we established a criterion that could tell whether a combination of LRP methods was effective or not.With the help of this criterion,the dual concurrent ATRP-RAFT was constructed by the combination of ICAR-ATRP and RAFT.The binary LRP method allowed for(1)the expansion of monomer range for RAFT;(2)the reduction of CuII loading for ICAR-ATRP;(3)the enhanced control of dispersity.We believe that this research provides a different route for the development of the LRP methods.
基金supported by the National Natural Science Foundation of China (51690151, 22001166)。
文摘Polymerizations with multiple mechanisms performed simultaneously are promising but very challenging. As the key limitation,the complicated mutual influence between different mechanisms can be hardly defined and measured. Herein we establish a universal framework for the assessment of mutual influence between different mechanisms using binary polymerization for demonstration. The kinetics and thermodynamics of polymerization with two mechanisms are compared with the corresponding homopolymerization and the difference is expressed by a hybrid function. The hybrid function is composed of a hybrid parameter that describes the extent of mutual influence and a function that describes necessary conditions for mutual influence to occur. The extent of mutual influence can be calculated using kinetic and thermodynamic data without details of reaction mechanisms, for the first time providing a straightforward method to assess the mutual influence between different polymerization mechanisms.We envision that the method has potential in more complex systems with multiple mechanisms/monomers with mutual influence.
