Development of functional hybrid organic/inorganic architectures : methodology and applications

功能性混合有机/无机结构的开发：方法和应用

• 批准号: RGPIN-2017-05865
• 负责人: Claverie, Jerome
• 金额: $ 5.39万
• 依托单位: Université de Sherbrooke
• 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=711840
• 关键词: Development; functional; hybrid; organic; inorganic

Our research program aims at the conception (design, synthesis, characterization and property assessment) of functional hybrid materials. Due to their unique electronic and optical properties, inorganic nanostructures are exponentially used for a plethora of applications. However, they are difficult to exploit on a large scale due, inter alia, to their absence of solubility, their tendency to agglomerate, their poor adhesion and their lack of cohesiveness. To address these issues, surfactants, binders, surface-ligands, dispersants must be employed, but their presence is often responsible for a deterioration of the electronic or optical performance of the material. Here, we will explore the dispersion of nanoparticles and nanotubes using ephemeral surfactants, a novel class of surfactants which are surface-active in solution, but which evaporate in the solid-state. For this purpose, we will explore the copolymerization of a variety of olefin monomers with sulfur dioxide to form an amphiphilic polymer capable of stabilizing nanomaterials in solution. Interestingly, such polymers are also self-immolative: under the action of a heat, light or acid stimulus, they depolymerize into volatile monomeric units. As a contingency plan, we will also explore the anionic polymerization of aldehydes for the formation of ephemeral surfactants. The resulting dispersions will be used to form conducting inks, with the expected outcome that a higher conductivity be reached due to the absence of interfacial organic material at the interface between conducting nanoparticles or nanotubes. We will also explore the formation of a graphitizing polymer. Such polymer is soluble and processable, but under the action of a stimulus, it transforms into graphite. For this purpose, the chemistry of poly paraphenylene methylene will be investigated. A photoacid generator which decomposes under illumination will be used to trigger the transformation into graphite. The use of graphitizing polymers offer the possibility of direct laser writing of intractable graphite on a wide range of materials. Overall, this research program could have a significant impact of the formulation of nanomaterials for application for the microelectronic industry. Four PhD students and two undergraduate students will be supported each year, making the formation of highly qualified personnel an essential component of our research program.

我们的研究计划旨在实现功能混合材料的概念（设计，合成，表征和财产评估）。由于其独特的电子和光学特性，无机纳米结构被指数用于众多应用。 但是，由于缺乏溶解度，它们的趋势，粘附不良和缺乏凝聚力，因此很难大规模地利用大规模的大规模利用。为了解决这些问题，必须使用表面活性剂，粘合剂，表面配体，分散剂，但它们的存在通常是导致材料电子或光学性能的恶化。 在这里，我们将使用短暂的表面活性剂（一种新型的表面活性剂，在溶液中表面活性，但在固态中蒸发，我们将探索纳米颗粒和纳米管的分散体。为此，我们将探索各种烯烃单体与二氧化硫的共聚，以形成能够稳定溶液中纳米材料的两亲聚合物。有趣的是，此类聚合物也具有自动性：在热，光或酸刺激的作用下，它们分解为挥发性单体单位。 作为一项应急计划，我们还将探索醛为短暂表面活性剂形成的醛的阴离子聚合。所得的分散体将用于形成导电墨水，预期的结果是，由于在导电纳米颗粒或纳米管之间的界面上没有界面有机材料，因此达到了更高的电导率。 我们还将探索石墨化聚合物的形成。这种聚合物是可溶的，可以加工的，但是在刺激的作用下，它转化为石墨。为此，将研究聚二苯甲基的化学。在照明下分解的光酸发生器将用于触发转换为石墨。石墨化聚合物的使用提供了在多种材料上直接激光写入棘手石墨的可能性。 总体而言，该研究计划可能会对纳米材料的制定为微电子行业的应用产生重大影响。 每年将为四名博士学位学生和两名本科生提供支持，这使得高素质人员的成立成为我们研究计划的重要组成部分。