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首页> 外文期刊>Polymers for advanced technologies >Conjugated polymers containing phenothiazine moieties in the main chain
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Conjugated polymers containing phenothiazine moieties in the main chain

机译：主链上含有吩噻嗪部分的共轭聚合物

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摘要

Several conjugated polymers containing phenothiazine moieties in the main chain were synthesized by Knovenagel or Wittig condensations. The polymers were identified and characterized by 1{sub}H-NMR, IR, gel permeation chromatography (GPC), thermogravimetric analysis (TGA), UV-vis and fluorescent (FL) spectra. Results indicated that the m-polymer, which was prepared from the polycondensation of N-octyl-3,7-diformylphenothiazine with m-phenylene diacetonitrile, is the most thermally stable one in all the polymers synthesized. While, the ρ-polymer, which was prepared from the polycondensation of N-octyl-3,7-diformylphenothiazine with p-phenylene diacetonitrile, is the most thermally instable one. The introduction of a cyano group made the absorption and emissive maxima red-shift from 429 and 537 nm for the Ph-polymer to 465 and 597 nm for the ρ-polymer respectively. The quinoid structure formation allows the ρ-polymer to have a lower band gap than any other polymers. Emissive spectra of all these polymers in tetrahydrofuran (THF) solution have a narrow half-peak width.
机译：通过Knovenagel或Wittig缩合合成了几种在主链上包含吩噻嗪部分的共轭聚合物。通过1 H-NMR，IR，凝胶渗透色谱法（GPC），热重分析（TGA），紫外可见光谱和荧光光谱（FL）鉴定并表征了聚合物。结果表明，由N-辛基-3,7-二甲酰基吩噻嗪与间亚苯基二乙腈的缩聚反应制备的间位聚合物是所有合成聚合物中最热稳定的一种。而由N-辛基-3,7-二甲酰基吩噻嗪与对亚苯基二乙腈的缩聚反应制得的ρ-聚合物是最不稳定的。氰基的引入使得吸收和发射最大值从红移，从Ph聚合物的429和537 nm到ρ聚合物的465和597 nm。醌型结构的形成使得ρ-聚合物具有比任何其他聚合物更低的带隙。所有这些聚合物在四氢呋喃（THF）溶液中的发射光谱具有较窄的半峰宽。

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