Controlling a Polymer Adhesive Using Light and a Molecular Switch
Controlling a Polymer Adhesive Using Light and a Molecular Switch
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DOI：
10.1021/ja500496n
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发表时间：
2014-02-26
影响因子：
15
通讯作者：
Branda, Neil R.
中科院分区：
文献类型：
--
作者：
Asadirad, Amir Mahmoud;Boutault, Stephanie;Branda, Neil R.
通过二乙烯基呋喃与马来酰亚胺单体的Diels-Alder反应，合成了一种热可降解聚合物，生成光响应二乙烯。紫外光（312 nm）和可见光（>435 nm）分别“打开”Diels Alder反应的可逆性，并“关闭”和“打开”聚合物的自愈特性。在紫外线照射后，聚合物作为粘合剂的强度得到增强。可见光使胶粘剂变弱。
A thermally remendable polymer was synthesized by the Diels-Alder reaction between dithienylfuran and maleimide monomers to generate a photoresponsive diarylethene. UV light (312 nm) and visible light (>435 nm) "gate" the reversibility of the Diels Alder reaction and turn the self-healing properties of the polymer "off" and "on", respectively. After exposure to UV light, the strength of the polymer as an adhesive is enhanced. Visible light weakens the adhesive.