用光和分子开关控制聚合物粘合剂。
Controlling a polymer adhesive using light and a molecular switch.
机构信息
4D LABS, Department of Chemistry, Simon Fraser University , 8888 University Drive, Burnaby, BC, Canada V5A 1S6.
出版信息
J Am Chem Soc. 2014 Feb 26;136(8):3024-7. doi: 10.1021/ja500496n. Epub 2014 Feb 18.
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.
一种热修复聚合物是通过二噻吩呋喃和马来酰亚胺单体的 Diels-Alder 反应合成的，生成了一种光响应的二芳基乙烯。紫外光（312nm）和可见光（>435nm）分别“控制”Diels-Alder 反应的可逆性，使聚合物的自修复性能“关闭”和“开启”。在暴露于紫外光后，聚合物作为粘合剂的强度增强。可见光削弱了粘合剂的强度。
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