The initiation mechanism of the copolymerization of 2-vinylnaphthalene with maleic anhydride was studied under irradiation of 365 nm. The excited complex was formed from (1) the local excitation of 2-vinylnaphthalene ...The initiation mechanism of the copolymerization of 2-vinylnaphthalene with maleic anhydride was studied under irradiation of 365 nm. The excited complex was formed from (1) the local excitation of 2-vinylnaphthalene followed by the charge-transfer interaction with maleic anhydride and (2) the excitation of the ground state charge-transfer complex, and then it collapsed to 1,4-tetramethylene biradical for initiation. A1: 1 alternating copolymer was formed in different monomer feeds. Addition of benzophenone could greatly enhance the rate of copolymerization through energy-transfer mechanism.展开更多
It is known that a number of electron donor-acceptor monomer pairs undergo. spontaneous copolymerization under thermal condition. However, only a few studies have been devoted to the photo-induced copolymerization of ...It is known that a number of electron donor-acceptor monomer pairs undergo. spontaneous copolymerization under thermal condition. However, only a few studies have been devoted to the photo-induced copolymerization of such monomer pairs. This letter will report the copolymerization of styrene (St)with fumaronitrile (FN) under irradiation of 365-nm light.展开更多
In the previous paper we reported the photopolymerization of methyl methacrylate (MMA) initiated by benzophenone (BP)/aniline system. The proposed mechanism emphasized the interaction between the excited triplet BP an...In the previous paper we reported the photopolymerization of methyl methacrylate (MMA) initiated by benzophenone (BP)/aniline system. The proposed mechanism emphasized the interaction between the excited triplet BP and the ground state aniline to produce two kinds of radicals, among which only aniline radicals initiate the polymerization. We have also verified that each polymer chain contained one anilino end group on average. It展开更多
基金Project Supported by the National Natural Science Foundation of China.
文摘The initiation mechanism of the copolymerization of 2-vinylnaphthalene with maleic anhydride was studied under irradiation of 365 nm. The excited complex was formed from (1) the local excitation of 2-vinylnaphthalene followed by the charge-transfer interaction with maleic anhydride and (2) the excitation of the ground state charge-transfer complex, and then it collapsed to 1,4-tetramethylene biradical for initiation. A1: 1 alternating copolymer was formed in different monomer feeds. Addition of benzophenone could greatly enhance the rate of copolymerization through energy-transfer mechanism.
基金Project supported by the Science Fund of Fudan University.
文摘It is known that a number of electron donor-acceptor monomer pairs undergo. spontaneous copolymerization under thermal condition. However, only a few studies have been devoted to the photo-induced copolymerization of such monomer pairs. This letter will report the copolymerization of styrene (St)with fumaronitrile (FN) under irradiation of 365-nm light.
文摘In the previous paper we reported the photopolymerization of methyl methacrylate (MMA) initiated by benzophenone (BP)/aniline system. The proposed mechanism emphasized the interaction between the excited triplet BP and the ground state aniline to produce two kinds of radicals, among which only aniline radicals initiate the polymerization. We have also verified that each polymer chain contained one anilino end group on average. It
