Synthesizing Complex Conjugated Molecular Materials

合成复杂的共轭分子材料

• 批准号: RGPIN-2017-04462
• 负责人: Eisler, Sara
• 金额: $ 2.04万
• 依托单位: University of New Brunswick
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=747858
• 关键词: Synthesizing; Complex; Conjugated; Molecular; Materials

Stimuli-responsive and electroactive organic compounds are integral to technological developments in materials and device manufacturing, respectively. Despite the current interest in these areas, significant gaps remain in our fundamental knowledge about them, which continue to drive research in molecular engineering. The proposed research program has two streams involving the synthesis of small, highly functionalized molecules: one dedicated to solving problems in organic electronics, and the other to controlling switching dynamics and addressing multi-state switching in responsive molecules.A better understanding of organic device operation has led to the production of increasingly efficient conjugated polymers (CPs) and small molecules/oligomers for use as components of organic electronic devices. Despite our increasing knowledge, the effectiveness of organic devices is still low. Advances in organic electronics will rely heavily on the ability to access molecular units that can be combined to program the physical and electronic features required to produce an efficient material. However, the majority of current CP and small molecule designs rely on a surprisingly limited range of molecular building blocks. The proposed research program focuses on the design and synthesis of a range of highly functionalizable and tunable molecular units that will be used to investigate novel systems with extended pi-conjugation, and to produce better organic materials for device applications. Molecular switches are used extensively to create complex molecules and architectures. While a number of bistable switches are known, only a few of these are synthetically accessible enough to be useful for the desired range of materials applications. The result is that virtually all attempts to regulate structure and function in materials are limited to a small number of available switchable motifs. Most of these switches are bistable, interconverting between two stable states. Multi-stable switches, on the other hand, are very rare, but are desirable for their ability to precisely access a number of molecular orientations, and for their applications in fields such as information storage. The proposed research plan focuses on the development of new and underexplored responsive functionalities. They will be utilized in combination with more traditional molecular switches to create multi-stable molecular switches with novel switching motifs. Specific objectives include determining how to synthesize what are necessarily complex molecules; how to use orthogonal stimuli to maximize control over molecular movements; and how to transform between different states in high yields. Ultimately, exploring these objectives will allow us to fulfill our long-term goals of building light responsive sensors with remote tunable activity, and constructing the next generation of molecular machines.

刺激响应和电活性有机化合物分别是材料和器件制造技术发展的组成部分。尽管目前对这些领域感兴趣，但我们对它们的基础知识仍然存在重大差距，这将继续推动分子工程的研究。拟议的研究计划有两个流程，涉及小的，高度官能化的分子的合成：致力于解决有机电子学中的问题，另一个是控制开关动力学和解决响应分子中的多状态开关。对有机器件操作的更好理解导致了越来越有效的共轭聚合物（CP）和小分子的生产。用作有机电子器件组分的低聚物。尽管我们的知识越来越多，有机设备的有效性仍然很低。有机电子学的进步将在很大程度上依赖于获得分子单元的能力，这些分子单元可以结合起来，对生产高效材料所需的物理和电子特征进行编程。然而，大多数目前的CP和小分子设计依赖于令人惊讶的有限范围的分子结构单元。拟议的研究计划侧重于设计和合成一系列高度官能化和可调的分子单元，这些单元将用于研究具有扩展π共轭的新型系统，并为器件应用生产更好的有机材料。分子开关被广泛用于创建复杂的分子和架构。虽然已知许多的可编程开关，但这些开关中只有少数是合成可获得的，足以用于所需范围的材料应用。其结果是，几乎所有调节材料结构和功能的尝试都局限于少数可用的可转换基序。这些开关大多数是双稳态的，在两个稳定状态之间相互转换。另一方面，多稳态开关是非常罕见的，但由于其精确访问许多分子取向的能力以及其在诸如信息存储等领域的应用而令人期望。拟议的研究计划侧重于开发新的和探索不足的响应功能。它们将与更传统的分子开关组合使用，以创建具有新颖开关基序的多稳定分子开关。具体目标包括确定如何合成必然复杂的分子;如何使用正交刺激来最大限度地控制分子运动;以及如何以高产率在不同状态之间转换。最终，探索这些目标将使我们能够实现我们的长期目标，即构建具有远程可调活性的光响应传感器，并构建下一代分子机器。