Phototriggered Base Proliferation: A Highly Efficient Domino Reaction for Creating Functionally Photo-Screened Materials
Phototriggered Base Proliferation: A Highly Efficient Domino Reaction for Creating Functionally Photo-Screened Materials
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DOI：
10.1021/ma400983t
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发表时间：
2013-08
期刊：
影响因子：
5.5
通讯作者：
Minghui He;Xun Huang;Z. Zeng;Jianwen Yang
中科院分区：
文献类型：
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作者：
Minghui He;Xun Huang;Z. Zeng;Jianwen Yang
光触发碱基扩散作为一种高效的多米诺骨牌反应被用来产生光屏蔽功能材料，提供了一种在聚合过程中通过化学扩散胺向未照射区域进行光聚合阴影区域的策略。通过将增殖胺与过氧化氢引发剂(过氧化二苯甲酰，BPO)结合，实现了丙烯酸酯单体在三维空间中的光触发自蔓延聚合。这种方法的优点在于它增强了光敏性，提高了传播速度，提高了双键转化率(90%)，同时降低了维持行进前沿的局部高温和最小BPO浓度。令人惊讶的是，不同的BPO浓度和适量的BA-BPD(1-(9-fluorenylmethoxycarbonyl)-4-benzylpiperidine)浓度都可以很好地调节传播速度和局部最高温度。最后，对光屏蔽型功能材料进行了研究。
Phototriggered base proliferation as a highly efficient domino reaction is presented for creating functionally photo-screened materials, providing a strategy for the photopolymerization of shadow areas via chemically diffuse amines toward the nonirradiated areas during polymerization. By integrating proliferated amines with a peroxide initiator (dibenzoyl peroxide, BPO), phototriggered self-propagating polymerization of acrylate monomers in three-dimensional space was achieved. The advantages of this approach lie in its enhanced photosensitivity, increased propagating velocity, and elevated double-bond conversion (90%) while reducing the local high temperature and the minimum BPO concentration that sustain a traveling front. Astonishingly, the propagating velocity and local maximum temperature can be well-modulated by varied BPO concentration and the appropriate amount of BA-BPD (1-(9-fluorenylmethoxycarbonyl)-4-benzylpiperidine) concentration, respectively. Finally, functionally photo-screened material c...