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Grayscale Photopatterning of an Amorphous Polymer Thin Film Prepared by Photopolymerization of a Bisanthracene-Functionalized Liquid-Crystalline Monomer

机译:通过双蒽功能官能化液晶单体的光聚合制备的非晶态聚合物薄膜的灰度光图案化。

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摘要

A method for grayscale photopatterning of an amorphous polymer film derived from a bisanthracene-functionalized liquid-crystalline monomer is developed. Solution photopolymerization of a monomer with two anthracene moieties, one at each end, affords an amorphous polymer. A combination of irradiation with patterned UV light and heating results in photopatterning on thin films prepared from the polymer. On non-irradiated areas of the film, the polymer reverts to the monomer owing to the thermal back-reaction of the anthracene photodimer, forming an ordered phase. On irradiated areas remaining in the amorphous phase, the thermal back-reaction is suppressed. This phenomenon results in a clear contrast and visual images on the film under polarized light. Grayscale photopatterning is also made possible for the solution-polymerized polymer by controlling the intensity of exposure. In addition, rewritable photopatterning can be achieved by melt photopolymerization of the monomer. The new photopatterning is essentially nondestructive because it needs neither image development nor anthracene-excitation light for reading.
机译:开发了一种对由双蒽官能化的液晶单体衍生的无定形聚合物膜进行灰度光图案化的方法。具有两个蒽基团的单体的溶液光聚合,在每一端各有一个,从而得到无定形聚合物。图案化的紫外线照射与加热相结合,可以在由聚合物制成的薄膜上进行光致图案化。在薄膜的非辐照区域,由于蒽光二聚体的热逆反应,聚合物转化为单体,形成有序相。在残留在非晶相中的被照射区域上,热逆反应被抑制。这种现象可在偏振光下在胶片上形成清晰的对比度和可视图像。通过控制曝光强度,溶液聚合的聚合物也可以进行灰度光图案化。另外,可通过单体的熔融光聚合来实现可重写的光图案化。新的光图案形成基本上是非破坏性的,因为它既不需要图像显影,也不需要蒽激发光来阅读。

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  • 来源
    《Advanced Functional Materials》 |2010年第10期|P.1561-1567|共7页
  • 作者单位

    National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565 (Japan);

    rnDepartment of Materials Science and Engineering Faculty of Engineering Shibaura Institute of Technology 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548 (Japan);

    rnDepartment of Materials Science and Engineering Faculty of Engineering Shibaura Institute of Technology 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548 (Japan);

    rnNational Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565 (Japan);

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