H-Bonded and Metal Organic Frameworks

氢键和金属有机框架

• 批准号: RGPIN-2018-06427
• 负责人: Shimizu, George
• 金额: $ 5.76万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=692058
• 关键词: Bonded; Metal; Organic; Frameworks

This research programme targets new functional materials by understanding the basic science of how metal ions and molecules assemble. The target materials will be porous and a core research challenge will be to make the holes in the networks stable and the right size, shape and dimensionality. We have developed a new two step method to make such materials that reconciles the need for strong interactions with the ability to make an ordered structure. New porous solids based on weaker H-bonds will be employed to make solids capable of showing gating behaviour in the presence of appropriate guest molecules leading to very selective sorbents. A second class of highly robust materials will also be targeted with linkers designed specifically to form 3-D open pores. Both of these families will be studied through competitive experiments for challenging separations of industrial relevance such as ethylene/acetylene and xylene isomers. A second target application is the use of such materials for generation of better proton conducting materials. This is a field that our group has pioneered and we are positioned to make exceptional materials with the platforms described above. The ordered and acid stable scaffoldings will offer potential breakthroughs both in levels of proton conductivity (>5x10-1 Scm-1) and operating temperature range (150-200 degC). A further stage of research will be to control the particle size and morphology in these systems to understand the role of interfaces in conduction and to make them more amenable to membrane incorporation. We will also explore these classes of compounds for sorption and sensing of chemical agents by templating the pores in the solids with non-hazardous structural mimics of the agents. For this project, knowledge will transfer from other subthemes both in molecular design and particle size control as promising sorbent materials will need to be incorporated into a composite form for use. ***The program is in the realm of basic science but it is "application-directed" by taking higher risk approaches to meaningful targets than would likely be possible in other sectors. The skills gained on such a project are fully transferable and the students are instilled with a greater sense of discovery and risk tolerance.

该研究计划通过了解金属离子和分子如何组装的基础科学来瞄准新的功能材料。 目标材料将是多孔的，核心研究挑战将是使网络中的孔稳定且具有正确的尺寸、形状和维度。我们开发了一种新的两步方法来制造此类材料，该方法可以协调强相互作用的需求与制造有序结构的能力。 基于较弱氢键的新型多孔固体将用于制造能够在适当的客体分子存在下表现出门控行为的固体，从而产生非常选择性的吸附剂。第二类高度坚固的材料也将采用专门设计用于形成 3-D 开孔的连接器。这两个家族都将通过竞争性实验进行研究，以进行具有挑战性的工业相关分离，例如乙烯/乙炔和二甲苯异构体。第二个目标应用是使用此类材料来产生更好的质子传导材料。这是我们团队开创的一个领域，我们的定位是利用上述平台制造卓越的材料。有序且酸稳定的支架将在质子电导率水平（> 5x10-1 Scm-1）和工作温度范围（150-200 ℃）方面提供潜在的突破。进一步的研究阶段将是控制这些系统中的颗粒尺寸和形态，以了解界面在传导中的作用，并使它们更适合膜的结合。我们还将通过使用化学试剂的无害结构模拟物对固体中的孔进行模板化，来探索这些类型的化合物对化学试剂的吸附和传感。对于该项目，知识将从分子设计和粒径控制方面的其他子主题转移，因为有前途的吸附剂材料需要合并成复合形式以供使用。 ***该计划属于基础科学领域，但它是“以应用为导向”的，通过采用比其他领域可能更高的风险方法来实现有意义的目标。在这样的项目中获得的技能是完全可以转移的，学生们会被灌输更大的发现意识和风险承受能力。