Emissive Materials from Supramolecular Platforms

超分子平台的发射材料

• 批准号: RGPIN-2018-04021
• 负责人: Blight, Barry
• 金额: $ 2.62万
• 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: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=712111
• 关键词: Emissive; Materials; Supramolecular; Platforms

Our research program is aimed at making unique molecular assemblies using the same type of intermolecular interactions that give biology its ability to form DNA double helices, and perform complex chemical transformations such as peptide assembly via the ribosome. What differentiates our work from biology is that we are developing functional materials with industrial applications by employing intermolecular interactions to form higher-order assemblies with discrete, efficient and accessible properties. We have recently demonstrated that we can embed a luminescent iridium metal center into a “DNA base-pair” type architecture, where hydrogen bonding of a guest molecule to its complement exhibits enhanced photoluminescent behavior and colour change. By slightly modifying the structures of the molecular pair, we can also tune their physical and photophysical properties. Building on our most recent results, we will begin compiling a library of complimentary small molecules that will allow us to explore a range of colours without changing the structure of the ligand set surrounding iridium center itself. We are particularly interested in accessing an efficient true-blue emitter for light-emitting devices (still industrially difficult to achieve), by tuning the pairing compliment molecule. Using this archetypical design, we will also form extended higher-order structures by employing ditopic H-bonded linkers to form supramolecular polymeric assemblies, formulated into nanoparticles. We expect enhanced emission properties from these self-healing aggregates comparable to quantum dots emitters. The self-healing property is noteworthy, as it will allow us to access new inkjet deposition protocols for LED device fabrication. Using a related iridium platform, we will also assemble extended porous crystalline solids termed metal-organic frameworks (MOFs) using the photoluminescent iridium component as a sensing mechanism. MOFs have structures related to zeolite materials, but with the ability to tune the properties of the pores for a variety of uses. By combining the emissive component of the iridium material and the proton-rich co-ligand we have designed, we will demonstrate discrete flue-gas sensing by way of small molecule recognition through H-bonding. Finally, the program will facilitate the most valuable element in our research program, which is the training of skilled and motivated Highly Qualified Personnel. These individuals will emerge from our program as some of Canada's most exceptional scientists whose work will help shape the future of Canadian science and technology.

我们的研究计划旨在利用相同类型的分子间相互作用来制造独特的分子组装体，使生物学能够形成 DNA 双螺旋，并进行复杂的化学转化，例如通过核糖体进行肽组装。正在开发具有工业应用的功能材料，通过利用分子间相互作用形成具有离散、高效和可访问特性的高阶组件，我们最近证明我们可以将发光铱金属中心嵌入“DNA”中。 “碱基对”型结构，其中客体分子与其补体的氢键结合表现出增强的光致发光行为和颜色变化，通过稍微修改分子对的结构，我们还可以调整它们的物理和光物理性质。 基于我们最新的结果，我们将开始编译一个互补小分子库，这将使我们能够在不改变铱中心本身周围配体组结构的情况下探索一系列颜色。我们对获得有效的真实-特别感兴趣。用于发光器件的蓝色发射器（在工业上仍然难以实现），通过调整配对互补分子，我们还将通过采用双位氢键连接体形成超分子来形成扩展的高阶结构。我们期望这些自修复聚集体具有与量子点发射器相当的增强的发射性能，因为它将使我们能够使用新的喷墨沉积协议来制造 LED 设备。 使用相关的铱平台，我们还将使用光致发光铱成分作为传感机制来组装称为金属有机框架（MOF）的扩展多孔晶体固体，MOF 具有与沸石材料相关的结构，但具有调节沸石材料性能的能力。通过将铱材料的发射成分与我们设计的富含质子的辅助配体相结合，我们将通过以下方式演示离散烟气传感。通过氢键识别小分子的方法。 最后，该计划将促进我们研究计划中最有价值的要素，即培训技术精湛、积极进取的高素质人员。这些人将从我们的计划中脱颖而出，成为加拿大最杰出的科学家，他们的工作将有助于塑造加拿大的未来。科学技术。