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学科主题: 高分子化学
题名: Variable Polymer Properties Driven by Substituent Groups: Investigation on a Trifl uorovinylether-Functionalized Polyfluorene at the C-9 Position
其他题名: 取代基诱导的聚合物性能变化: C-9位含有三氟乙烯基取代基的聚芴的研究
作者: Wang JJ(王佳佳); Li K(李凯); Yuan C(袁超); Jin KK(金凯凯); Tian S(田松); Sun J(孙晶); Fang Q(房强)
通讯作者: 房强
刊名: Macromol. Chem. Phys.
发表日期: 2015
DOI: 10.1002/macp.201400597
卷: 216, 期:7, 页:742-748
收录类别: SCI
文章类型: 论文
英文摘要: A new polyfluorene PF-TFVE with functional trifluorovinylether (-OCF=CF2) groups at the C-9 position is reported. When heated to high temperatures, the polymer converts to a cross-linked network (PF-PFCB), which exhibits much lower dielectric constant and dissipation factor at high frequency than a traditional octyl substituted polyfluorene (PFO) (cf., PF-PFCB: 2.42 and 0.048; PFO: 3.80 and 0.22 @ 30 MHz). The electronic spectra of PF-PFCB indicate that it exhibits weaker UV-vis absorption and photoluminescent emission than PFO in the solid state, suggesting that the big substituent groups and the cross-linked networks in PF-PFCB hinder the conjugation between two fluorene units. This is the first example revealing that dielectric properties of polyfluorenes can be varied by different substituent groups at the C-9 position. These results indicate that polyfluorenes can not only be considered as semiconductors, but also as insulators.
语种: 英语
相关网址: 查看原文
WOS记录号: WOS:000352576100005
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/39841
Appears in Collections:高分子材料研究室_期刊论文

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作者单位: 中科院上海有机化学研究所, 有机功能分子合成与组装化学重点实验室

Recommended Citation:
Wang JJ,Li K,Yuan C,et al. Variable Polymer Properties Driven by Substituent Groups: Investigation on a Trifl uorovinylether-Functionalized Polyfluorene at the C-9 Position[J]. Macromol. Chem. Phys.,2015,216(7):742-748.
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