Controlling the synthesis and microstructure of non-linear pi-conjugated semiconducting polymers

控制非线性π共轭半导体聚合物的合成和微观结构

• 批准号: 1506209
• 负责人: Christine Luscombe
• 金额: $ 36.81万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-06-15 至 2018-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1506209&HistoricalAwards=false
• 关键词: Controlling; synthesis; microstructure; non; linear

With this award, the Macromolecular, Supramolecular and Nanochemistry Program in the Chemistry Division is funding Professor Christine Luscombe at the University of Washington to synthesize new types of 'flexible plastic electronics' or molecules that are electrically conductive. These materials are currently used to produce light-emitting diodes which are incorporated into the color displays used in cell phones and televisions. Another important application is for solar cells to capture the sun's energy and convert it to electricity. Because they are flexible and lightweight, conducting organic polymers may be used to create novel 'wearable electronics'. In the future, one could envision using these materials to assemble artificial nerves or skin. To realize these and other applications, chemists must achieve better control over the structure of these molecules. This proposal enables the creation of molecular structures that have not been synthesized before and allows their properties to be explored. The proposal also allows the knowledge about how polymers work to be shared with the public through community outreach activities at the Pacific Science Center in Seattle, the Science Café (an evening lecture series held at a local pub), and through research and mentoring activities for underrepresented minorities and for women. Pi-conjugated semiconducting polymers are actively under development for use in organic light-emitting diodes and thin-film transistors. Additionally, in the past decade, there has been an exponential growth in the research on pi-conjugated semiconducting polymers for applications in organic photovoltaics (OPVs). However, due to limitations in controlling the synthesis of these polymers, the majority of studies related to these classes of materials have focused on linear polymers with broad molecular weight distributions. While it is widely recognized that, for traditional insulating coiled polymers, the topology and architecture of the polymers greatly affect their properties, a detailed structure-property relationship for how the topology of rigid rod polymers such as pi-conjugated semiconducting polymers affects the microstructure and thus their optoelectronic properties has remained limited. The Luscombe group, using their synthetic methodology, is synthesizing star and graft polymers with control over arm length and arm number. Using these star and graft polymers, network polymers are being created. Model polymers with exactly the same attributes but one are synthesized so that how changing one component (eg. arm length in a star polymer) in the polymer alters microstructure and thus optoelectronic properties can be studied. The overarching goal of this proposal is to exploit the groups ability to perform controlled polymerizations for the synthesis of semiconducting polymers, synthesize pi-conjugated polymers with unique architectures that have not been synthesized before, and build a more complete picture for structure-property relationships in this class of materials.

有了这个奖项，化学系的大分子，超分子和纳米化学项目资助华盛顿大学的克莉丝汀Luscombe教授合成新型的“柔性塑料电子”或导电分子。 这些材料目前用于生产发光二极管，这些发光二极管被纳入手机和电视机中使用的彩色显示器中。 太阳能电池的另一个重要应用是捕获太阳能并将其转化为电能。 因为它们是柔性和轻质的，导电有机聚合物可用于创建新的“可穿戴电子产品”。在未来，人们可以设想使用这些材料来组装人工神经或皮肤。为了实现这些和其他应用，化学家必须更好地控制这些分子的结构。 这一提议使得以前没有合成过的分子结构的创造成为可能，并允许探索它们的性质。该提案还允许通过西雅图太平洋科学中心的社区外展活动、科学咖啡馆（在当地酒吧举行的晚间系列讲座）以及为代表性不足的少数民族和妇女开展的研究和指导活动，与公众分享有关聚合物如何发挥作用的知识。π共轭半导体聚合物正在积极开发中，用于有机发光二极管和薄膜晶体管。此外，在过去十年中，用于有机光致发光（OPV）的π共轭半导体聚合物的研究呈指数增长。然而，由于在控制这些聚合物的合成方面的限制，与这些类别的材料相关的大多数研究都集中在具有宽分子量分布的线性聚合物上。虽然广泛认识到，对于传统的绝缘卷曲聚合物，聚合物的拓扑结构和结构极大地影响它们的性质，但是关于刚性棒聚合物如π-共轭半导体聚合物的拓扑结构如何影响微结构并因此影响它们的光电性质的详细结构-性质关系仍然有限。Luscombe研究小组使用他们的合成方法，合成了星星和接枝聚合物，并控制了臂长和臂数。使用这些星星和接枝聚合物，网络聚合物正在创建。模型聚合物具有完全相同的属性，但一个是合成的，以便如何改变一个组件（如。星星聚合物中的臂长）改变了聚合物的微结构，因此可以研究光电性能。该提案的总体目标是利用基团进行可控聚合以合成半导体聚合物的能力，合成具有之前未合成的独特结构的π共轭聚合物，并建立这类材料中结构-性质关系的更完整的图片。