【摘 要】
:
Thioxanthone-based N-phthalimidoamino acid ammonium salt(thioxanthen-DBU) as a photocaged base was synthesized and characterized. The photochemical properties a
【机 构】
:
State Key Laboratory of Pulp & Paper Engineering, South China University of Technology,School of Med
【出 处】
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Chinese Chemical Letters
论文部分内容阅读
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.
Thioxanthone-based N-phthalimidoamino acid ammonium salt (thioxanthen-DBU) as a photocaged base was synthesized and characterized. It was found that the compound absorbs over the UV and visible region with relatively high absorption coefficients ., 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 to the amine-mediated redox photopolymerization of trimethylol propane triacrylate (TMPTA), and an excellent photopolymerization profile was obtained.
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