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首页> 外文期刊>Advanced Functional Materials >On-Substrate Preparation of an Electroactive Conjugated Polyazomethine from Solution-Processable Monomers and its Application in Electrochromic Devices
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On-Substrate Preparation of an Electroactive Conjugated Polyazomethine from Solution-Processable Monomers and its Application in Electrochromic Devices

机译：可溶液加工单体在电学上制备电活性共轭聚偶氮甲胺及其在电致变色器件中的应用

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摘要

An electroactive polyazomethine is prepared from a solution processable 2,5-diaminothiophene derivative and 4,4'-triphenylamine dialdehyde by spray-coating the monomers on substrates, including indium tin oxide (ITO) coated glass and native glass slides. The conjugated polymer was rapidly formed in situ by heating the substrates at 120℃ for 30 min in an acid saturated atmosphere. The resulting immobilized polymer is easily purified by rinsing the substrate with dichloromethane. The on-substrate polymerization is tolerant towards large stoichiometry imbalances of the comonomers, unlike solution step-growth polymerization. The resulting polyazomethine is electroactive and it can be switched reversibly between its neutral and oxidized states both electrochemically and chemically without degradation. A trans-missive electrochromic device is fabricated from the immobilized polyazomethine on an ITO electrode. The resulting device is successfully cycled between its oxidized (dark blue) and neutral (cyan/light green) states with applied biases of+3.2 and -1.5 V under ambient conditions without significant color fatigue or polymer degradation. The coloration efficiency of the oxidized state at 690 nm is 102 cm~2 C~(-1).
机译：由可溶液加工的2,5-二氨基噻吩衍生物和4,4'-三苯胺二醛通过将单体喷涂在包括氧化铟锡（ITO）涂层的玻璃和天然玻璃载玻片上的基材上来制备电活性聚偶氮甲碱。通过在酸性饱和气氛中将底物在120℃下加热30分钟，可以快速原位形成共轭聚合物。通过用二氯甲烷冲洗底物可以容易地纯化所得的固定化聚合物。与溶液逐步生长聚合不同，基体上的聚合对共聚单体的大化学计量失衡具有耐受性。所得的聚偶氮甲亚胺是电活性的，并且可以在电化学和化学上可逆地在其中性和氧化态之间切换而不会降解。透射电致变色器件是由固定在ITO电极上的聚偶氮甲胺制成的。在环境条件下，施加的偏压为+3.2和-1.5 V时，所得器件成功地在其氧化（深蓝色）和中性（蓝绿色/浅绿色）状态之间循环，而不会出现明显的颜色疲劳或聚合物降解。 690 nm处氧化态的显色效率为102 cm〜2 C〜（-1）。

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  • 来源
    《Advanced Functional Materials》 |2013年第28期|3549-3559|共11页
  • 作者

    Lambert Sicard; Daminda Navarathne; Thomas Skalski; W. G. Skene;

  • 作者单位

    Laboratoire de caracterisation photophysique des materiaux conjugues Departement de chimie Universite de Montreal CP 6128, Centre-ville, Montreal, QC,Laboratoire de Chimie des Polymeres - UMR 7610, Universite Pierre et Marie CURIE (Paris 6), Site St Raphael, 3 rue Galilee, 94200 Ivry-sur-Seine, France;

    Laboratoire de caracterisation photophysique des materiaux conjugues Departement de chimie Universite de Montreal CP 6128, Centre-ville, Montreal, QC;

    Laboratoire de caracterisation photophysique des materiaux conjugues Departement de chimie Universite de Montreal CP 6128, Centre-ville, Montreal, QC;

    Laboratoire de caracterisation photophysique des materiaux conjugues Departement de chimie Universite de Montreal CP 6128, Centre-ville, Montreal, QC;

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