Collaborative Research: Modular Design of Cross-Conjugated Organic Semiconductors

合作研究：交叉共轭有机半导体的模块化设计

• 批准号: 1413207
• 负责人: Aimee Tomlinson
• 金额: $ 8.65万
• 依托单位: University of North Georgia
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-08-01 至 2018-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1413207&HistoricalAwards=false
• 关键词: Collaborative; Research; Modular; Design; Cross

Malika Jeffries-EL of Iowa State University is funded by the Macromolecular, Supramolecular and Nanochemistry Program for collaborative research involving a team of scientists from both Iowa State and North Georgia College. The team is developing new electronics materials that are organic, meaning they are made from carbon-based molecules rather than the more commonly used inorganic materials, such as those based on silicon or germanium. In addition to their relative abundance, these organic materials have much lower fabrication costs and provide a range of properties not found in the inorganic substances. In this project, a combination of synthesis, theoretical calculations and physical measurement studies are being combined to design and fabricate working electronic devices. This work is having a broad impact not only on the electronics industry, but also by providing an interdisciplinary research experience for both undergraduate and graduate students, which fosters an interest in chemistry through a creative outreach effort targeting female and underrepresented minority students at all educational levels.This project focuses on developing new cross-conjugated organic semiconductors for use in organic light emitting diodes and photovoltaic cells. In particular, novel cross-conjugated oligomers comprised of the robust benzobisoxazole (BBO) moiety are being studied. BBO is used as the electron-deficient building block since it is a unique cross-conjugated ring system that can be coupled either through the oxazole rings or through the central benzene ring, producing substances with different properties. The group is synthesizing materials with perpendicular conjugation axes because they have spatially segregated frontier molecular orbitals. This provides a means for semi-independent tuning of either the lowest unoccupied molecular orbital (LUMO) or highest occupied molecular orbital (HOMO). The benefits of the approach are that the cross-conjugated platform allows for the opportunity to optimize the material?s optical and electronic properties for specific applications. Various materials are being prepared and the most promising ones studied further by incorporation into working devices.

爱荷华州立大学的Malika Jeffries-El由大分子，超分子和纳米化学计划资助，涉及来自爱荷华州立大学和北乔治亚学院的科学家团队。该团队正在开发有机的新电子材料，这意味着它们是由碳基分子制成的，而不是更常用的无机材料，例如基于硅或锗的材料。除了它们的相对丰度外，这些有机材料的制造成本要低得多，并提供了无机物质中未发现的一系列特性。在这个项目中，合成，理论计算和物理测量研究的结合已组合到设计和制造工作电子设备。这项工作不仅对电子行业产生了广泛的影响，而且还通过为本科生和研究生提供跨学科的研究经验，这通过针对所有教育水平的女性和代表性不足的少数族裔学生来激发人们对化学的兴趣。该项目着重于开发新的交叉偶联有机半导体，用于发射二极管和光伏细胞。特别是，正在研究由坚固的苯唑阵然（BBO）部分组成的新型跨缀合的低聚物。 BBO被用作电子缺陷的构建块，因为它是一种独特的交叉偶联环系统，可以通过奥恶唑环或中央苯环耦合，可产生具有不同特性的物质。该组正在用垂直共轭轴合成材料，因为它们已在空间上隔离边缘分子轨道。这为半独立调整最低的无占分子轨道（Lumo）或最高占用分子轨道（HOMO）的半独立调整提供了一种手段。该方法的好处是，交叉缀合的平台允许机会优化特定应用的材料的光学和电子属性。正在准备各种材料，最有前途的材料通过纳入工作设备进一步研究。