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首页> 美国卫生研究院文献>Scientific Reports >A bio-enabled maximally mild layer-by-layer Kapton surface modification approach for the fabrication of all-inkjet-printed flexible electronic devices
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A bio-enabled maximally mild layer-by-layer Kapton surface modification approach for the fabrication of all-inkjet-printed flexible electronic devices

机译：具有生物功能的最大程度温和的逐层Kapton表面改性方法用于制造全喷墨印刷的柔性电子设备

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A bio-enabled, environmentally-friendly, and maximally mild layer-by-layer approach has been developed to surface modify inherently hydrophobic Kapton HN substrates to allow for great printability of both water- and organic solvent-based inks thus facilitating the full-inkjet-printing of flexible electronic devices. Different from the traditional Kapton surface modification approaches which are structure-compromising and use harsh conditions to target, and oxidize and/or remove part of, the surface polyimide of Kapton, the present Kapton surface modification approach targeted the surface electric charges borne by its additive particles, and was not only the first to utilize environmentally-friendly clinical biomolecules to build up a thin film of protamine-heparin complex on Kapton, but also the first to be conducted under minimally destructive and maximally mild conditions. Besides, for electrically charged ink particles, the present surface modification method can enhance the uniformity of the inkjet-printed films by reducing the “coffee ring effect”. As a proof-of-concept demonstration, reduced graphene oxide-based gas sensors, which were flexible, ultra-lightweight, and miniature-sized, were fully-inkjet-printed on surface modified Kapton HN films and tested for their sensitivity to dimethyl methylphosphonate (a nerve agent simulant). Such fabricated sensors survived a Scotch-tape peel test and were found insensitive to repeated bending to a small 0.5 cm radius.
机译：已开发出一种生物活性，环保且最大程度温和的逐层方法，以表面改性固有的疏水性Kapton HN基材，以实现水基和有机溶剂基油墨的出色可印刷性，从而促进全喷墨-印刷柔性电子设备。与传统的Kapton表面改性方法不同，该方法会破坏结构并使用苛刻的条件来靶向，氧化和/或除去Kapton的表面聚酰亚胺，而当前的Kapton表面改性方法则针对其添加剂所承载的表面电荷不仅是第一个利用环保的临床生物分子在Kapton上构建鱼精蛋白-肝素复合物薄膜的人，而且还是第一个在最小破坏性和最大温和条件下进行的实验。此外，对于带电的油墨颗粒，本发明的表面改性方法可通过减少“咖啡环效应”来增强喷墨印刷膜的均匀性。作为概念验证的证明，在表面改性的Kapton HN膜上完全喷墨打印了柔性，超轻且微型的还原型基于氧化石墨烯的气体传感器，并测试了其对甲基膦酸二甲酯的敏感性（神经毒剂模拟物）。这种制造的传感器在苏格兰胶带剥离测试中幸存下来，并且发现它对重复弯曲至0.5µcm的小半径不敏感。

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