Synthesis and solid-state polymerization of monomers with a conjugated diyne–triene–diyne structure
作者:Kazumasa Higuchi、Keita Sasamura、Kei Mizuguchi、Yoko Tatewaki、Shuji Okada
DOI:10.1016/j.polymer.2013.04.018
日期:2013.5
diyne–triene–diyne structure were synthesized and their solid-state polymerization was investigated for the first time. The monomers could be polymerized by UV irradiation at 254 nm or 365 nm and increase of the absorption in the visible region was observed during polymerization. Since the absorption tail of the photoproducts shifted to longer wavelength than that of the corresponding monomers, the main photoreaction
合成具有共轭二炔-三烯-二炔结构的Tetradeca-5,7,9-三烯-1,3,11,13-四炔衍生物,并对其固态聚合进行了首次研究。可以通过在254nm或365nm处的UV辐射使单体聚合,并且在聚合过程中观察到在可见光区域吸收的增加。由于光产物的吸收尾移到比相应单体的吸收尾更长的波长,因此估计聚合初期的主要光反应方案为在二炔部分中的1,4-加成。然而,没有观察到具有规则结构的聚二乙炔的激子吸收带。通过粉末X射线衍射确认的结晶度在光聚合过程中损失,并且发现聚合物无序。