Command-destruct thermosets via photoinduced thiol-catalyzed β-scission of acyclic benzylidene acetals
Command-destruct thermosets via photoinduced thiol-catalyzed β-scission of acyclic benzylidene acetals
复制标题
通过光诱导硫醇催化无环亚苄基乙缩醛的 β 断裂命令破坏热固性材料
DOI：
10.1039/d0py01006e
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发表时间：
2020
影响因子：
4.6
通讯作者：
Patton, Derek L.
中科院分区：
文献类型：
--
作者：
Walker, William D.;Sandoz, Michael J.;Roland, Samuel;Buster, Tony M.;Newman, John K.;Patton, Derek L.
光诱导巯基催化的无环亚苄基缩醛的夺氢和β-断裂被证明是一种“命令-破坏”聚合物热固性材料的新途径。使用这种方法，我们表明，聚（硫醚缩醛）网络通过硫醇-烯光聚合反应合成快速降解为苯甲酸烷基酯的副产物时，引发的光，从固体转变为液体在几秒钟内。光驱动的构建和破坏过程，可通过动力学的明显差异，很容易适用于微图案化，增材/减材制造和波长选择性应用。
Photoinduced thiol-catalyzed hydrogen abstraction and β-scission of acyclic benzylidene acetals is demonstrated as a new route to “command-destruct” polymer thermosets. Using this approach, we show that poly(thioether acetal) networks synthesized via thiol–ene photopolymerization rapidly degrade to alkyl benzoate byproducts when triggered with light, transitioning from solid to liquid within seconds. The light-driven construction and destruction processes, accessible via distinct differences in kinetics, are readily amenable for photopatterning, additive/subtractive manufacturing and wavelength-selective applications.