Aromatic Cation-Capped Oligoynes: Stabilisation and Trion Formation

芳香族阳离子封端寡炔：稳定化和 Trion 形成

• 批准号: EP/Y015657/1
• 负责人: Paul McGonigal
• 金额: $ 23.84万
• 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%2FY015657%2F1
• 关键词: Aromatic; Cation; Capped; Oligoynes; Stabilisation

I propose the development of aromatic cation-terminated oligoynes (i) to improve the stability of oligoynes for solution-stateprocessing and (ii) to investigate their charged excitons (trions). In addition, I will (iii) investigate the oligoyne-cumulene distortion ofthese materials in the context of single molecular conductance, charge (hole) mobility and optoelectronics applications. Thisexperimental study of trions created by exciting aromatic cation-terminated oligoyne chains will enhance our understanding ofexcited-state charge carrier dynamics. This type of hole doping has not yet been explored in the oligoyne field. Therefore, this projectwill give new fundamental insights into the formation of three-body charge complexes, hole mobility along conjugated chains, andthe oligoyne-cumulene distortion, as well as the self-assembly, optoelectronic properties, and the redox chemistry of tropylium (TP)-terminated oligoynes.Our hypothesis is that using TP subunits to place persistent, carbon-centred positive charges at both ends of an oligoyne will (a)generate extreme hole mobility throughout the carbon chain and (b) enable facile positive-trion generation. The primary objectivesof this proposal are (1) to develop scalable synthetic routes for TP-terminated odd/even oligoyne chains, (2) to investigate andcharacterise their excitons and trions using transient absorption spectroscopy and time-resolved luminescence measurements, (3) toshed light on their oligoyne-cumulene distortion, (4) to modulate the potential decay dynamics of the trions using Pd-sandwichmetal cluster chemistry, and (5) to apply DFT calculations to help rationalise our observations. To fully comprehend and harness theremarkable potential of oligoyne trion species, fundamental insights into the dynamics and mechanisms that characterize theirformation and degradation are critical.

我提出了芳香阳离子终止的寡素（i）的发展，以提高寡素在溶液状态过程中的稳定性和（ii）调查其带电的激子（TRIONS）的稳定性。此外，我将（iii）在单分子电导，电荷（孔）迁移率和光电子化应用的背景下研究这些材料的寡素 - 粉状扭曲。这项实验性研究是对令人兴奋的芳香阳离子终止的寡头链创建的Trions的实验研究，将增强我们对激发状态电荷载体动力学的理解。这种类型的孔掺杂尚未在寡素田中探索。因此，该项目将为三体电荷复合物的形成，沿共轭链的孔迁移和寡素 - 粉状扭曲以及自组装，光电特性，光电性特性以及使用TPESS的氧化寡素化学的碳均量子的载体，以使碳纤维化的碳均使用TPISS，carsity carsired carsired carsired carsired carsired carsitions carsired carists carsired carists carsired carirets carsiret carsiret，该项目将提供新的基本见解。寡头的两端都将（a）在整个碳链中产生极端的孔迁移率，并且（b）启用易于正面的正趋势。该提案的主要目标是（1）为TP终止奇数/偶然链链开发可扩展的合成途径，（2）使用瞬态吸收光谱和时间分辨的发光测量值调查并调查其激素和TRIONS，并使用少型脉冲传输的光线（3）调整了寡头 - 肿瘤的传输（4）（4）（4）（4）（4） Pd-sandwichmetal集群化学和（5）应用DFT计算以帮助合理化我们的观察结果。为了充分理解和利用寡素化物种的可观潜力，对表征其形象和降解的动态和机制的基本见解至关重要。