Synthesis of grafted poly(p‐phenyleneethynylene) with energy donor–acceptor architecture via atom transfer radical polymerization: Towards nonaggregating and hole‐facilitating light‐emitting material
Synthesis of grafted poly(p‐phenyleneethynylene) with energy donor–acceptor architecture via atom transfer radical polymerization: Towards nonaggregating and hole‐facilitating light‐emitting material
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DOI：
10.1002/pola.22129
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发表时间：
2007-08
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影响因子：
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通讯作者：
Kanyi Pu;Yi Chen;Xiaoying Qi;Chun-Yang Qin;Qing-Quan Chen;Hongyu Wang;Yun Deng;Quli Fan;Yan-Qin Huang;Shu-juan Liu;Wei Wei-Wei;Bo Peng;Wei Huang
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文献类型：
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作者：
Kanyi Pu;Yi Chen;Xiaoying Qi;Chun-Yang Qin;Qing-Quan Chen;Hongyu Wang;Yun Deng;Quli Fan;Yan-Qin Huang;Shu-juan Liu;Wei Wei-Wei;Bo Peng;Wei Huang
在这方面的贡献，我们展示了一种新的有效的方法，用于构建高效和耐用的聚（对苯乙炔）（PPE）含有发射材料的非聚集和空穴促进性能，通过引入空穴传输块到PPE系统作为接枝线圈，以及建立之间的接枝线圈和PPE骨干的能量供体-受体架构。本文中，选择聚（2-（咔唑-9-基）乙基甲基丙烯酸酯）（PCzEMA）作为空穴传输嵌段，并通过原子转移自由基聚合作为接枝线圈并入PPE系统中。用核磁共振和凝胶渗透色谱对共聚物的结构进行了表征，结果表明，所得共聚物具有窄的多分散性。热重分析和差示扫描量热法沿着大分子引发剂的加入，证实了PPE-g-PCzEMA的热稳定性得到了提高。通过紫外-可见吸收光谱、光致发光发射光谱、激发光谱和循环伏安法研究了该共聚物的光电性能。结果表明，PPE-g-PCzEMA具有以单体发光团为主的固态发光特性，并且在固态下，PCzEMA嵌段向PPE主链的能量传递效率相对较高.此外，由于PCzEMA的存在，空穴注入特性大大促进，如CV曲线所证实的。所有这些数据表明PPE-g-PCzEMA是用于光电器件的良好候选物。© 2007 Wiley Periodicals，Inc.聚合物科学杂志A部分：聚合物化学45：3776 - 3787，2007
In this contribution, we demonstrate a new effective methodology for constructing highly efficient and durable poly(p-phenyleneethynylene) (PPE) containing emissive material with nonaggregating and hole-facilitating properties through the introduction of hole-transporting blocks into the PPE system as the grafting coils as well as building the energy donor–acceptor architecture between the grafting coils and the PPE backbone. Poly(2-(carbazol-9-yl)ethyl methacrylate) (PCzEMA), herein, is chosen as the hole-transporting blocks, and incorporated into the PPE system as the grafting coils via atom transfer radical polymerization. The chemical structure of the resultant copolymer, PPE-g-PCzEMA, was characterized by NMR and gel permeation chromatography, showing that the desirable copolymer was obtained with the narrow polydispersity. The increased thermal stability of PPE-g-PCzEMA was confirmed by thermogravimetric analysis and differential scanning calorimetry along with its macroinitiator. The optoelectronic properties of this copolymer were studied in detail by ultraviolet-visible absorption, photoluminescence emission and excitation spectra, and cyclic voltammogram (CV). The results indicate that PPE-g-PCzEMA exhibits the solid-state luminescent property dominated by individual lumophores, and also the energy transfer process from the PCzEMA blocks to the PPE backbone with a relatively higher energy transfer efficiency in the solid-state compared to that of the solution state. Additionally, the hole-injection property is greatly facilitated due to the presence of PCzEMA, as confirmed by CV profiles. All these data indicate that PPE-g-PCzEMA is a good candidate for use in optoelectronic devices. © 2007 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 45: 3776–3787, 2007