聚芴
共轭体系
三氟乙酸
芴
材料科学
聚合物
超分子化学
热稳定性
共聚物
高分子化学
聚合
质子化
光化学
化学
有机化学
分子
离子
复合材料
作者
Weijie Li,Bin Liu,Yan Qian,Linghai Xie,Jing Wang,Shengbiao Li,Wei Huang
出处
期刊:Polymer Chemistry
[The Royal Society of Chemistry]
日期:2013-01-01
卷期号:4 (6): 1796-1796
被引量:24
摘要
Diazafluorene (DAF) has a similar configuration to a fluorene unit except that two carbon atoms are replaced with nitrogen atoms, offering an ideal model of supramolecular conjugated polymers to investigate the structure–property relationship. Herein, a series of DAF-based oligofluorenes and polyfluorenes, including NFF, NF2F, F2NF, PFO-NO, PFO-N5, PFO-N15 and PFO-N50, have been synthesized by Suzuki and/or Yamamoto polymerization. All dioctyldiazafluorene-based copolymers show improved solubility, high quantum efficiency and good thermal stability. The 4,5-diazafluorenone (DAFone)-based oligomers exhibit solvent-dependent fluorescence and DAF-based copolymers show an optical response with a large red-shift (ca. 40–60 nm) of the absorption peak when they were protonated with trifluoroacetic acid. Their photoluminescent properties have also been obviously tuned by coordinating different metal ions to the polymers. DAF-based conjugated polymers are potential supramolecular polymer semiconductors for thin film electronics.
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