Reactive Vapor Deposition of Conjugated Polymer Films on Arbitrary Substrates.
Reactive Vapor Deposition of Conjugated Polymer Films on Arbitrary Substrates.
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任意基材上共轭聚合物薄膜的反应气相沉积。
DOI：
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发表时间：
2018
期刊：
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通讯作者：
Trisha L. Andrew
中科院分区：
文献类型：
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作者：
Nongyi Cheng;Trisha L. Andrew
我们展示了一种方法，共形涂层共轭聚合物在任意基板上使用定制设计的，低压反应室。将导电聚合物聚（3，4-亚乙基二氧噻吩）（PEDOT）和聚（3，4-亚丙基二氧噻吩）（PProDOT）以及半导体聚合物聚（噻吩并[3，2-B]噻吩）（PTT）沉积在具有高表面积的非常规高度无序和纹理化基底（如纸、毛巾和织物）上。该报道的沉积室是先前气相反应器的改进，因为我们的系统可以容纳挥发性和非挥发性单体，例如3，4-丙烯二氧噻吩和噻吩并[3，2-B]噻吩。固体和液体氧化剂的利用也被证明。这种方法的一个局限性是它缺乏复杂的原位厚度监测器。通过常用的基于溶液的涂覆方法（例如旋涂和表面接枝）制备的聚合物涂层通常不均匀或易于机械降解。该报道的气相沉积方法克服了这些缺点，并且是常见的基于溶液的涂覆方法的强有力的替代方案。值得注意的是，通过所报道的方法涂覆的聚合物膜在粗糙表面上是均匀和共形的，即使在微米尺度下也是如此。该特征允许气相沉积聚合物在柔性和高度纹理化的基板上的电子器件中的未来应用。
We demonstrate a method of conformally coating conjugated polymers on arbitrary substrates using a custom-designed, low-pressure reaction chamber. Conductive polymers, poly(3,4-ethylenedioxythiophene) (PEDOT) and poly(3,4-propylenedioxythiophene) (PProDOT), and a semiconducting polymer, poly(thieno[3,2-b]thiophene) (PTT), were deposited on unconventional highly-disordered and textured substrates with high surface areas, such as paper, towels and fabrics. This reported deposition chamber is an improvement of previous vapor reactors because our system can accommodate both volatile and nonvolatile monomers, such as 3,4-propylenedioxythiophene and thieno[3,2-b]thiophene. Utilization of both solid and liquid oxidants are also demonstrated. One limitation of this method is that it lacks sophisticated in situ thickness monitors. Polymer coatings made by the commonly used solution-based coating methods, such as spin-coating and surface grafting, are often not uniform or susceptible to mechanical degradation. This reported vapor phase deposition method overcomes those drawbacks and is a strong alternative to common solution-based coating methods. Notably, polymer films coated by the reported method are uniform and conformal on rough surfaces, even at a micrometer scale. This feature allows for future application of vapor deposited polymers in electronics devices on flexible and highly textured substrates.