Thioxanthone-based N-phthalimidoamino acid ammonium salt（thioxanthen-DBU） as a photocaged base was synthesized and characterized. The photochemical properties and initiation mechanism were analyzed. It was found tha...Thioxanthone-based N-phthalimidoamino acid ammonium salt（thioxanthen-DBU） as a photocaged base was synthesized and characterized. The photochemical properties and initiation mechanism were analyzed. It was found that the compound absorbs over the UV and visible region with relatively high absorption coefficients. Furthermore, the covalent binding of N-phthalimidoamino acid and type II chromophores（thioxanthone, TX） remarkably improved the photoreactivity. Specifically, in combination with a benzoyl peroxide initiator, thioxanthen-DBU was able to initiate the amine-mediated redox photopolymerization of trimethylol propane triacrylate（TMPTA）, and an excellent photopolymerization profile was obtained.展开更多
Benzoylfonnamide（BFA） derivatives are proposed as new photocagcd bases with good solubility in epoxy resin.Initially their structures were confirmed by ~1H NMR,^（13）C NMR,and elemental analysis.Next,we detail thei...Benzoylfonnamide（BFA） derivatives are proposed as new photocagcd bases with good solubility in epoxy resin.Initially their structures were confirmed by ~1H NMR,^（13）C NMR,and elemental analysis.Next,we detail their thermal stability,solubility behavior,and photolysis products.Furthermore,the model photo-latent anion polymerization（AP） of epoxide system in the presence of BFA-dBA（N,N-dibenzyl-2-oxo-2-phenylacetamide） as a photocaged base has been investigated,and excellent photopolymerization profile is obtained.展开更多
基金financially supported by National Natural Science Foundation of China(No.20974127,21374135)China Postdoctoral Science Foundation(No.2013M542178)+1 种基金the Open Foundation of the State Key Laboratory of Pulp and Paper Engineering in South China University of Technology(No.C713043z)the Fundamental Research Funds for the Central Universities(No.2013ZB0025)
文摘Thioxanthone-based N-phthalimidoamino acid ammonium salt（thioxanthen-DBU） as a photocaged base was synthesized and characterized. The photochemical properties and initiation mechanism were analyzed. It was found that the compound absorbs over the UV and visible region with relatively high absorption coefficients. Furthermore, the covalent binding of N-phthalimidoamino acid and type II chromophores（thioxanthone, TX） remarkably improved the photoreactivity. Specifically, in combination with a benzoyl peroxide initiator, thioxanthen-DBU was able to initiate the amine-mediated redox photopolymerization of trimethylol propane triacrylate（TMPTA）, and an excellent photopolymerization profile was obtained.
基金financially supported by National Natural Science Foundation of China(No.21374135)China Postdoctoral Science Foundation(Nos.2013M542178 and 2014M562183)+1 种基金the Open Foundation of the State Key Laboratory of Pulp and Paper Engineering in South China University of Technology(No.C713043z)the Fundamental Research Funds for the Central Universities (No.2013ZB0025)
文摘Benzoylfonnamide（BFA） derivatives are proposed as new photocagcd bases with good solubility in epoxy resin.Initially their structures were confirmed by ~1H NMR,^（13）C NMR,and elemental analysis.Next,we detail their thermal stability,solubility behavior,and photolysis products.Furthermore,the model photo-latent anion polymerization（AP） of epoxide system in the presence of BFA-dBA（N,N-dibenzyl-2-oxo-2-phenylacetamide） as a photocaged base has been investigated,and excellent photopolymerization profile is obtained.
