Functional Polyarylene Networks

技术总结拟议的研究描述了一种新的聚芳烃和杂化分子复合材料家族，用于各种高性能、薄膜网络和高产率碳的应用。作为一般类别，聚芳烃目前受到熔融和溶解加工性差的限制，而传统的改善加工性的策略通常以牺牲性能为代价。为了克服这些问题，以前的NSF资金使我们能够从可加工的中间体开发出多功能的聚芳烃网络家族。一般的合成方法以商品双酚为原料，经过三步反应即可得到高产率的双邻位二芳基芳烃(BODA)单体。当加热时，Boda Tetynes经历Bergman环聚，得到支化的-从而可加工的-中间反应性低聚物。溶液或熔融制备以及进一步的热固化可产生高性能网络、电活性和发光材料，以及高产量的半导体玻碳。新的BDA衍生材料的合成被认为是针对重要新兴领域的应用，包括燃料电池、光伏、发光器件、光子传感器和无机/碳混杂复合材料。非技术综述拟议的研究描述了一系列新塑料的合成和研究，这些塑料在新兴和具有战略重要性的领域具有潜在的应用，如太阳能、氢燃料电池、发光设备和化学/生物传感器。这项技术的独特优势包括能够在形成塑料结构的同时形成涂层和模压件。这种类型的塑料结构在过去一直很难加工。该项目还包括许多更广泛的影响，侧重于促进多学科研究生培训、工业导师的项目管理以及K-12教师和学生的外联。具体地说，外展活动将集中在三个领域：关于使用日常塑料传达科学概念的K-12教师培训讲习班，K-12化学示范路演，以及克莱姆森新兴学者计划。后者是克莱姆森的一个为期三周的项目，面向南卡罗来纳州数百名经济困难且主要是少数族裔的高中生。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探索兵团奖学金赠款，在一名探索兵团资深研究员的指导下作为工业导师。

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.