TPAHs as energy carriers for OPV devices

TPAH 作为 OPV 器件的能量载体

• 批准号: EP/X021564/1
• 负责人: Paul McGonigal
• 金额: $ 24.26万
• 依托单位: University of York
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FX021564%2F1
• 关键词: TPAHs; energy; carriers; OPV; devices

The aims of this proposal are to design and synthesise new singlet fission chromophores, to incorporate them in organic photovoltaic (OPV) devices, and to investigate their performance for solar-to-electricity and electricity-to-solar energy conversions. Singlet fission is a highly sought-after phenomenon to enhance the efficiency of OPVs, but it has been restricted to a very narrow range of structural motifs -predominantly small molecules constituted solely of neutral fused six-membered rings-limiting the scope and flexibility of its development and applications. To date, there have not been any reports that have taken advantage of aromatic cations based on seven-membered rings (i.e., fused tropylium rings) in functional polycyclic aromatic hydrocarbons (PAHs). This is not only a fundamental area of organic materials that has not been explored, but it also provides a pathway to expand the structural diversity of available singlet fission materials. I will investigate tropylium-fused aromatic hydrocarbons (TPAHs) as a new class of singlet fission chromophore. The inclusion of fused tropylium ring systems has the potential to enhance the electronic, structural, and photophysical properties of PAH materials on account of their diffuse positive charge, redox activity, and negative Gaussian curvature. We aim to explore the potential of these materials as efficient energy carriers in OPV devices.

这项提案的目的是设计和合成新的单线态裂变发色团，将它们结合到有机光伏（OPV）设备中，并研究它们在太阳能到电力和电力到太阳能转换方面的性能。单线态裂变是一种非常受欢迎的现象，可以提高opv的效率，但它一直局限于一个非常狭窄的结构基序范围-主要是由中性熔融六元环组成的小分子-限制了其发展和应用的范围和灵活性。到目前为止，还没有任何关于利用功能化多环芳烃（PAHs）中基于七元环（即熔融三角环）的芳香阳离子的报道。这不仅是有机材料尚未探索的基本领域，而且还为扩大现有单线态裂变材料的结构多样性提供了途径。我将研究tropyium -fused aromatic hydrocarbons （TPAHs）作为一类新的单线态裂变发色团。由于多环芳烃材料的弥散正电荷、氧化还原活性和负高斯曲率，融合的tropylium环体系有可能增强多环芳烃材料的电子、结构和光物理性质。我们的目标是探索这些材料在OPV器件中作为高效能量载体的潜力。