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使用相同类型的分子间相互作用来制作独特的分子组件，从而使生物学能够形成DNA双螺旋，并通过核糖体进行复杂的化学转化，例如肽组合。与生物学不同的工作与生物学的区别在于，我们通过采用分子间相互作用来开发具有工业应用的功能材料，以形成具有离散，高效且可访问的特性的高阶组件。我们最近证明，我们可以将发光的虹膜金属中心嵌入“ DNA碱基对”型结构中，在该建筑中，客人分子在其完成中的氢键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特性。 基于我们最近的结果，我们将开始编译一个免费的小分子库，这些分子将使我们能够探索一系列颜色，而不会更改围绕虹膜中心本身的配体套件的结构。我们特别有兴趣通过调整配对补充分子来访问发光设备的有效蓝色发射极（仍然难以实现）。使用这种原型设计，我们还将通过采用二置H键接头形成成型的超分子聚合物组件，形成纳米颗粒中的超分子聚合物组件，形成扩展的高阶结构。我们期望这些自我​​修复骨料与量子点发射器相当的发射范围增强。值得注意的是自我修复属性，因为它将使我们能够访问用于LED设备制造的新喷墨沉积协议。 使用相关的Iridium平台，我们还将使用光致发光的虹膜组件作为一种灵敏度机制组装称为金属有机框架（MOF）的延长的多孔晶体固体（MOF）。 MOF具有与沸石材料相关的结构，但能够调整孔的性质以供多种用途。通过结合虹膜材料的发射成分和我们设计的富含质子的富含配体，我们将通过小分子识别通过H键来证明离散的烟气 - 气体感测。 最后，该计划将促进我们的研究计划中最有价值的要素，即对熟练和积极进取的高素质人员的培训。这些人将从我们的计划中脱颖而出，成为加拿大一些最杰出的科学家，他们的工作将有助于塑造加拿大科学技术的未来。