Graphene Oxide Langmuir Blodgett (GO-LB) Functional Thin Films

氧化石墨烯 Langmuir Blodgett (GO-LB) 功能薄膜

• 批准号: NE/T014725/1
• 负责人: Charles Faul
• 金额: $ 1.69万
• 依托单位: University of Bristol
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FT014725%2F1
• 关键词: Graphene; Oxide; Langmuir; Blodgett; GO

EPSRC : Nouf Zaghloul : EP/L016648/1Conjugated polymers can potentially provide flexible and lightweight conductors and semiconductors that can be used in wearable electronics. Polymer-based materials are highly desirable due to their attractive properties such as intrinsic flexibility and electronic tunability. Among these polymers, polyaniline (PAni) is particularly unique due to its readily controlled doping level by simple redox processes, or the addition of acid or base for doping and de-doping processes, respectively. When nanostructured, PAni (such as nanowires, nanofibers, and nanorods) displays enhanced performance due to its high surface area to volume ratio. The interfacial area between the PAni and its environment is significantly increased, and this is particularly useful in applications such as sensors. Compared to its bulk form, nanostructured PAni displays faster response time and improved sensitivity due to the increased surface area, and target molecules can be sensed at low penetration depths. However, due to the lack of facile and reliable methods for making high-quality conducting and semiconducting polymer nanostructures and thin films, these properties have not yet been widely exploited.One of the techniques recognised as providing significant control for film deposition since the 1920s is the Langmuir-Blodgett (LB) method, which can deliver films that are one molecular layer thick. This technique has been increasingly used to deposit various nanomaterials including PAni, PAni nanocomposites, graphene, and graphene oxide onto a wide array of substrates. These materials have potential use in a broad range of applications, including flexible and/or transparent electronic devices. The aim of this project is to utilize the Langmuir Blodgett (LB) deposition technique at the University of Waterloo to form uniform thin films layers of PAni nanocomposites layers. Successful production of thin film PAni nanofibers will allow research into laser writing and the fabrication and testing of simple proof-of-principle flexible sensor devices. This will facilitate the development of a direct patterning method for producing high-resolution features, that is both simple and inexpensive, and, realization of a new class of polymer printed devices and soft robotics.

EPSRC：Nouf Zaghloul：EP/L016648/1共轭聚合物可以潜在地提供可用于可穿戴电子产品的柔性和轻质导体和半导体。基于聚合物的材料由于其具有吸引人的性质如固有的柔性和电子可调谐性而非常理想。在这些聚合物中，聚苯胺（PAni）由于其易于通过简单的氧化还原过程或分别用于掺杂和去掺杂过程的酸或碱的添加来控制掺杂水平而特别独特。当纳米结构化时，PAni（如纳米线、纳米纤维和纳米棒）由于其高表面积与体积比而显示出增强的性能。PAni与其环境之间的界面面积显著增加，这在传感器等应用中特别有用。与其散装形式相比，纳米结构的PAni由于表面积增加而显示出更快的响应时间和更高的灵敏度，并且可以在低穿透深度下感测目标分子。然而，由于缺乏简便可靠的方法来制备高质量的导电和半导体聚合物纳米结构和薄膜，这些特性尚未得到广泛的利用。自20世纪20年代以来，被公认为对薄膜沉积提供重要控制的技术之一是Langmuir-Blodgett（LB）方法，该方法可以提供一个分子层厚的薄膜。该技术已越来越多地用于将各种纳米材料（包括PAni、PAni纳米复合材料、石墨烯和氧化石墨烯）存款到各种基底上。这些材料在广泛的应用中具有潜在的用途，包括柔性和/或透明电子器件。该项目的目的是利用滑铁卢大学的朗缪尔-布洛杰特（LB）沉积技术来形成均匀的聚苯胺纳米复合材料薄膜层。薄膜PAni纳米纤维的成功生产将允许对激光写入的研究以及简单的原理验证柔性传感器设备的制造和测试。这将有助于开发用于生产高分辨率特征的直接图案化方法，该方法既简单又便宜，并且实现了一类新的聚合物印刷设备和软机器人。