Chemical to solid modification in oligothiophene and related materials

低聚噻吩及相关材料的化学到固体改性

• 批准号: DDG-2015-00010
• 负责人: MacKinnon, Craig
• 金额: $ 0.73万
• 依托单位: Lakehead University
• 依托单位国家: 加拿大
• 项目类别: Discovery Development Grant
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=612414
• 关键词: Chemical; solid; modification; oligothiophene; related

New semiconducting materials based on organic molecules promise to allow for the creation of devices with properties unlike those made from traditional materials.  For example, the new "OLED" televisions boast thinner profiles and lower power consumption than older TV types.  Other advantages to these materials are greater flexibility, lighter weight, and lower manufacturing costs.  Although certain organic devices are on the market already, the promise of additional applications drives new research.  Our niche in the worldwide research effort is the relationship between the structure of the molecule and its solid, and how that impacts device performance.  In this way, we aim to create "designer electronics", where the electronic properties of the semiconductor (the active material) can be made-to-order using chemical modifications on the molecules that make the material.  Ultimately, the research will open the way to new devices that are more effective, cheaper, use less energy, and contain less toxic elements.  Thus, they could be called "green devices" and lead to more sustainable technologies.   Oligothiophenes are one type of organic semiconductor, based on a thiophene ring (a pentagon of five atoms - four carbons and one sulfur) repeated several times. This ring's stability and the different reactivities of its carbons make it an attractive target for modifications to change its properties, e.g., electron-withdrawing groups change its mode of conductivity from p-type (positive) to n-type (negative charge carriers). Similarly, modification to the oligothiophene unit can change its orientation relative to the surface.  A perpendicular orientation gives good field-effect conductivity, of use in circuit devices, while parallel orientation is ideal for light harvesting (needed for solar cells).   We will also be looking at the development of sustainable synthetic routes to these molecules, i.e., new methods of synthesis that minimize environmental impact and energy consumption.

基于有机分子的新型半导体材料有望创造出具有与传统材料不同的特性的设备。  例如，新型“OLED”电视比旧款电视具有更薄的外形和更低的功耗。  这些材料的其他优点包括更大的灵活性、更轻的重量和更低的制造成本。  尽管某些有机设备已经上市，但其他应用的前景推动了新的研究。  我们在全球研究工作中的定位是分子结构与其固体之间的关系，以及它如何影响设备性能。  通过这种方式，我们的目标是创造“设计电子产品”，其中半导体（活性材料）的电子特性可以通过对制造材料的分子进行化学修饰来定制。  最终，这项研究将为更有效、更便宜、使用更少能源、含有更少有毒元素的新设备开辟道路。  因此，它们可以被称为“绿色设备”并带来更可持续的技术。   低聚噻吩是一种有机半导体，基于多次重复的噻吩环（五个原子的五边形 - 四个碳和一个硫）。该环的稳定性及其碳的不同反应性使其成为修饰以改变其性质的有吸引力的目标，例如，吸电子基团将其导电模式从p型（正）改变为n型（负电荷载流子）。类似地，对低聚噻吩单元的修饰可以改变其相对于表面的取向。  垂直方向具有良好的场效应传导性，可用于电路器件，而平行方向则非常适合光收集（太阳能电池所需）。   我们还将研究这些分子的可持续合成路线的开发，即最大限度地减少环境影响和能源消耗的新合成方法。