Synthesis and materials properties of polyynes and polyenynes

多炔和多烯的合成及材料性能

• 批准号: 203135-2007
• 负责人: Tykwinski, Rik
• 金额: $ 7.79万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=363097
• 关键词: Synthesis; materials; properties; polyynes; polyenynes

Many aspects of our research address the synthesis of carbon-rich materials for the emerging field of photonics, the technology of using light to acquire, store, transmit, and process information. This is a rapidly developing area that has the potential to do for this century what electronics has done in the past. The photonics revolution is driven by the ability of light to carry information faster and more efficiently than electricity. Central to the success of photonics are the organic molecules that can be used in devices to manipulate light by altering its frequency, acting as a switch, or otherwise changing its characteristics.   A primary aim of this research program is the development of new synthetic methods for the realization of more efficient materials based on organic and organometallic compounds.  These compounds are particularly attractive due to their ability to manipulate light, low cost preparation, and facile processability.  Our synthetic methods allow for the preparation of a range of materials designed to feature nonlinear optical (NLO), liquid crystalline, and luminescent properties. With slight modifications, these methods will allow a controlled, step-wise synthesis of conjugated "molecular wires" and macrocycles with defined structure.  Our efforts are also directed toward the synthesis of molecular carbon allotropes and carbon-rich, nanometer-sized structures. It is often true that the performance of a material is intimately linked to its order in the solid-state.  To this end, we also explore self-assembly processes, where nanoscale structures can be constructed from small building blocks based on predictable behavior engineered at the atomic level. All of these new materials promise to provide new avenues of fundamental discovery at the interface of organic synthesis and materials science.   Finally, an interesting twist to our synthetic methods has also allowed for us to explore the formation of carbon-rich polyynes that are found naturally in sources as common as garden vegetables (e.g., carrots) and as obscure as bacterial cultures. Naturally occurring polyynes feature a wide range of biological properties, some of which we are currently exploring.

我们的研究的许多方面都涉及到为新兴的光子学领域合成富碳材料，即利用光来获取，存储，传输和处理信息的技术。这是一个快速发展的领域，有潜力在这个世纪做电子在过去所做的事情。光子学革命是由光比电更快、更有效地携带信息的能力驱动的。光子学成功的核心是有机分子，它们可以用于设备中，通过改变光的频率、充当开关或以其他方式改变光的特性来操纵光。 该研究项目的主要目的是开发新的合成方法，以实现基于有机和有机金属化合物的更高效的材料。这些化合物特别有吸引力，因为它们能够操纵光，低成本制备和易于加工。我们的合成方法允许制备一系列设计用于非线性光学（NLO），液晶，和发光性能。这些方法稍加修改，将允许控制的，逐步合成共轭的“分子线”和具有特定结构的大环化合物。我们的努力也指向合成分子碳同素异形体和富碳的纳米尺寸结构。材料的性能通常与其在固态下的有序性密切相关。为此，我们还探索了自组装过程，其中纳米结构可以根据原子水平上设计的可预测行为从小构建块构建。所有这些新材料都有望为有机合成和材料科学的基础发现提供新的途径。 最后，我们的合成方法的一个有趣的转折也使我们能够探索富含碳的多炔的形成，这些多炔天然存在于像菜园蔬菜一样常见的来源中（例如，胡萝卜）和细菌培养物一样模糊。天然存在的多炔具有广泛的生物学特性，其中一些我们目前正在探索。