当前位置: X-MOL 学术Polym. Int. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Synthesis and photoluminescence properties of fluorine-containing poly(phenylene vinylene) bearing hexafluorocyclopentene-fused phenanthrene unit
Polymer International ( IF 3.2 ) Pub Date : 2021-08-21 , DOI: 10.1002/pi.6291
Hiroki Fukumoto 1 , Kazuki Shiitsuka 1 , Keisuke Yamada 1 , Shigeyuki Yamada 2 , Tsutomu Konno 2 , Toshio Kubota 1 , Tomohiro Agou 1
Affiliation  

The intramolecular oxidative photocyclization of 1,2-diarylhexafluorocyclopentene (1) under light irradiation (λ = 365 nm) provided hexafluorocyclopentene-fused phenanthrene with formyl groups (2) in moderate yield. The copolymerization of 2 with tetraethyl(2,5-bis(dodecyloxy)-1,4-phenylene)bis(methylene)diphosphonate by the Horner–Wadsworth–Emmons reaction gave a fluorine-containing poly(phenylene vinylene), Polymer-2, in 41% yield. For comparison, a diphenylethene-type copolymer, Polymer-1, was also prepared analogously. The number-average molecular weights of Polymer-1 and Polymer-2 were 8900 and 3300 g mol−1, respectively. The copolymers showed high thermal stability, as revealed by their thermogravimetric analysis. UV–visible spectra of the copolymers in CHCl3 showed ππ* transition peaks at around 420 nm, and the peaks shifted to longer wavelengths by ca 10 nm for samples in film form. The photoluminescence spectra of Polymer-1 and Polymer-2 exhibited peaks at 542 and 560 nm in CHCl3, respectively, whereas the photoluminescence intensity of Polymer-2 was very low in the solid state, presumably owing to the partial aggregation of the polymer molecules. © 2021 Society of Industrial Chemistry.

中文翻译:

含六氟环戊烯稠合菲单元的含氟聚苯乙炔的合成及光致发光性能

1,2-二芳 基六氟环戊烯 ( 1 ) 在光照射 ( λ = 365 nm ) 下的分子内氧化光环化以中等产率提供了具有甲酰基的六氟环戊烯稠合菲 ( 2 )。2与四乙基(2,5-双(十二烷氧基)-1,4-亚苯基)双(亚甲基)二膦酸酯通过 Horner-Wadsworth-Emmons 反应共聚得到含氟聚(亚苯基亚乙烯基)聚合物 2,产率为 41%。为了比较,还类似地制备了二苯乙烯型共聚物聚合物-1。Polymer-1和Polymer-2的数均分子量分别为8900和3300 g mol -1, 分别。正如它们的热重分析所揭示的那样,共聚物显示出高热稳定性。共聚物在 CHCl 3 中的紫外-可见光谱在 420 nm 附近显示出ππ * 跃迁峰,对于薄膜形式的样品,这些峰向更长的波长移动了10 nm。Polymer-1 和 Polymer-2 的光致发光光谱分别在 CHCl 3中的 542 和 560 nm 处出现峰值,而 Polymer-2 在固态时的光致发光强度非常低,可能是由于聚合物分子的部分聚集. © 2021 工业化学学会。
更新日期:2021-08-21
down
wechat
bug