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Holographic polymer nanocomposites with ordered structures and improved electro-optical performance by doping POSS

机译：掺杂POSS的全息聚合物纳米复合材料，具有有序结构并改善了电光性能

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摘要

Holographic polymer nanocomposites containing the liquid crystal (LC) have garnered a great deal of attention primarily because of their unique electric-switchable optical properties. Herein, three types of polyhedral oligomeric silsesquioxane (POSS) are doped into the holographic polymer nanocomposites to tune their ordered structure and electro-optical performance. These POSS dopants are methacryl POSS with eight reactive double bonds, methacrylisobutyl POSS with one reactive double bond, and aminopropylisobutyl POSS with nonreactive groups. Interestingly, methacryl POSS is primarily chemically bonded to the polymer network within the constructive regions, which deteriorates the diffraction efficiency and electro-optical performance due to the depressed ordered structures. In contrast, methacrylisobutyl POSS displays a negligible effect on the diffraction efficiency and electro-optical performance while significantly improving the thermostability of holographic polymer nanocomposites, although it is also chemically linked to the polymer network within the constructive regions. Distinctively, aminopropylisobutyl POSS mainly locates in the destructive regions and clearly improves the electro-optical performance and thermostability of holographic polymer nanocomposites.
机译：包含液晶（LC）的全息聚合物纳米复合材料备受关注，这主要是因为它们具有独特的电开关光学特性。在此，将三种类型的多面体低聚倍半硅氧烷（POSS）掺杂到全息聚合物纳米复合材料中，以调整其有序结构和电光性能。这些POSS掺杂剂是具有八个反应性双键的甲基丙烯酸POSS，具有一个反应性双键的甲基丙烯酸异丁基POSS和具有非反应性基团的氨丙基异丁基POSS。有趣的是，甲基丙烯酸POSS主要化学键合到结构性区域内的聚合物网络上，这由于凹陷的有序结构而降低了衍射效率和电光性能。相比之下，甲基丙烯酸异丁酯POSS对衍射效率和电光性能的影响可忽略不计，同时显着提高了全息聚合物纳米复合材料的热稳定性，尽管它也化学连接到结构区内的聚合物网络。独特的是，氨基丙基异丁基POSS主要位于破坏性区域，并明显改善了全息聚合物纳米复合材料的电光性能和热稳定性。

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  • 来源
    《Composites》 |2019年第1期|107045.1-107045.9|共9页
  • 作者

    Ni Mingli; Chen Guannan; Wang Yong; Peng Haiyan; Liao Yonggui; Xie Xiaolin;

  • 作者单位

    Huazhong Univ Sci & Technol Key Lab Mat Chem Energy Convers & Storage Minist Educ Sch Chem & Chem Engn Wuhan 430074 Hubei Peoples R China;

    Huazhong Univ Sci & Technol Key Lab Mat Chem Energy Convers & Storage Minist Educ Sch Chem & Chem Engn Wuhan 430074 Hubei Peoples R China|HUST Natl Anticounterfeit Engn Res Ctr Wuhan 430074 Hubei Peoples R China;

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