Functional Polyarylene Networks

功能性聚亚芳基网络

• 批准号: 0514622
• 负责人: Dennis Smith
• 金额: --
• 依托单位: Clemson University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-07-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0514622&HistoricalAwards=false
• 关键词: Functional; Polyarylene; Networks

TECHNICAL SUMMARYThe proposed research describes a new family of polyarylenes and hybrid molecular composites useful in a variety of high performance, thin film network, and high yield carbon applications. As a general class, polyarylenes are currently limited by poor melt and solution processability and traditional strategies to improve processability typically sacrifice performance. In an effort to overcome these issues, prior NSF funding has enabled the development of a versatile family of polyarylene networks from processable intermediates. The general synthetic approach requires three steps from commercial bisphenols and affords bis-ortho-diynylarene (BODA) monomers in high yield. When heated, BODA tetraynes undergo Bergman cyclopolymerization to branched - and thus processable - intermediate reactive oligomers. Solution or melt fabrication and further thermal cure results in high performance networks, electroactive and light emissive materials, and high yield semiconductor glassy carbon. The synthesis of new BODA derived materials is proposed targeted for applications in important emerging areas including fuel cells, photo-voltaics, light emissive devices, photonic sensors, and inorganic / carbon hybrid composites. NON-TECHNICAL SUMMARYThe proposed research describes synthesis and study of a new family of plastics which have potential applications in emerging and strategically important fields such as solar energy, hydrogen fuel cells, light emitting devices, and chem/bio sensors. The unique advantage of this technology includes the ability to form coatings and molded parts while forming the plastic structure at the same time. Plastic structures of this type have been very difficult to process in the past. The project also includes many broader impacts focused on the promotion of multi-disciplinary graduate training, project stewardship from an industrial mentor, and K-12 teacher and student outreach. Specifically, outreach activities will be focused in three areas: K-12 teacher training workshops on using everyday plastics to convey scientific concepts, K-12 chemistry demonstration road shows, and the Clemson Emerging Scholars Program. The latter is a three week program at Clemson for several hundred economically disadvantaged and primarily minority high school students in South Carolina. A special element of the project is the management plan which will include faculty and graduate student project stewardship through the current NSF Discovery Corps Fellowship Grant under the direction of one of the Discovery Corps Sr. Fellows as industrial mentor.

技术概述所提出的研究描述了一个新的家庭的聚亚芳基和杂化分子复合材料，可用于各种高性能，薄膜网络，和高产率的碳应用。 作为一般类别，聚亚芳基目前受限于差的熔体和溶液可加工性，并且改善可加工性的传统策略通常牺牲性能。 为了克服这些问题，先前的NSF资助已经使得能够从可加工的中间体开发多功能的聚亚芳基网络家族。 一般的合成方法需要三步从商业双酚和提供双邻二炔基芳烃（BODA）单体在高产率。 当加热时，BODA四炔经历Bergman环化聚合反应，生成支化的-因此可加工的-中间反应性低聚物。 溶液或熔体制造和进一步的热固化导致高性能网络、电活性和发光材料以及高产率半导体玻璃碳。 提出了新的BODA衍生材料的合成针对重要新兴领域的应用，包括燃料电池，光致发光器件，光传感器和无机/碳混合复合材料。 非技术总结拟议的研究描述了一个新的塑料家族的合成和研究，这些塑料在新兴和战略重要领域具有潜在的应用，如太阳能，氢燃料电池，发光器件和化学/生物传感器。 该技术的独特优势包括在形成塑料结构的同时形成涂层和成型部件的能力。 这种类型的塑料结构在过去非常难以加工。 该项目还包括许多更广泛的影响，重点是促进多学科研究生培训，工业导师的项目管理，以及K-12教师和学生的推广。 具体而言，外联活动将集中在三个领域：K-12教师培训讲习班，使用日常塑料来传达科学概念，K-12化学示范路演，以及克莱姆森新兴学者计划。 后者是克莱姆森为南卡罗来纳州数百名经济困难和主要是少数民族的高中生举办的为期三周的项目。 该项目的一个特殊元素是管理计划，其中将包括教师和研究生项目管理，通过目前的NSF发现军团奖学金赠款的指导下，一个发现军团高级研究员作为工业导师。