CAREER: Polyarylene Networks and Hybrid Molecular Composites - An Inter-disciplined Approach to Polymer Research and Education

职业：聚亚芳基网络和杂化分子复合材料 - 聚合物研究和教育的跨学科方法

• 批准号: 9985160
• 负责人: Dennis Smith
• 金额: $ 37万
• 依托单位: Clemson University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-02-15 至 2006-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9985160&HistoricalAwards=false
• 关键词: CAREER; Polyarylene; Networks; Hybrid; Molecular

A new family of polyarylene derivatives is proposed which are of interest and potentially useful in a variety of high performance, optoelectronic, and high yield carbon applications. Polyarylenes, in general, are currently limited by poor melt and solution processability and traditional strategies to improve processability typically sacrifice performance. To enable the use of polyarylenes as fabricated high performance materials and as functional hybrid molecular composites, the proposed research will provide access to polyarylene networks from processable intermediates. The recently discovered synthetic approach consists of three steps starting from commercial bisphenols and affords bis-ortho-diynylarene(BODA) monomers in high yield. When heated, BODA tetraynes undergo Bergman cyclopolymerization and further thermal cure results in high performance networks, optoelectroactive materials, and high yield semiconductor glassy carbon. As a significant extension to this projects preliminary results, this work seeks to: (1) Prepare new BODA compounds and determine structure/property relationships for both thermal and catalytic/initiated routes. (2) Combine monomers and reactive intermediates with inorganic spacers, metal complexes, sol-gel precursors, and polymer electrolytes. (3) Expand preliminary microfabrication and pyrolysis studies to tailored semi-conductive glassy carbon and carbon/inorganic hybrid molecular composites.This project offers a new approach to processable and property-timable architectures for advanced application such as light emitting diodes, optical waveguides, low dielectric insulators, polymer electrolyte membranes, membrane electrode assemblies, and bipolar plates for batteries and fuel cells, microelectro/magnetomechanical systems, and microsemiconductors for optical signal processors, sensors, and switches. An inter-disciplinary approach spanning synthesis, materials science, polymer physics, and device fabrication is planned. Over the next five years, the proposed education and outreach plan will: (1) Establish an interdisciplinary basic polymer science curriculum that complements the rich variety of applied polymer studies currently offered at Clemson University. (2) Expose undergraduate and graduate students to inter-disciplinary collaborations on campus and industrial cooperative education/internships. (3) Team with the Intersociety Polymer Education Council (IPEC) and education faculty to implement a plan for teacher training workshops in polymer chemistry. (4) Use current and future positions at the national ACS level to enhance the local ACS section and extend leadership to the student affiliate programs.

提出了一类新的聚芳烃衍生物，它们在各种高性能、光电子学和高产率碳的应用中具有重要的意义和潜在的用途。一般来说，聚芳烃目前受到熔融和溶液加工性差的限制，而传统的改善加工性的策略通常会牺牲性能。为了能够将聚芳烃用作制造的高性能材料和功能杂化分子复合材料，拟议的研究将提供从可加工的中间体到聚芳烃网络的途径。最近发现的合成方法由三步组成，从商业双酚开始，高产率地提供了双邻位二芳基芳烃(BODA)单体。加热时，Boda Tetynes发生Bergman环聚，进一步热固化得到高性能网络、光电活性材料和高产率半导体玻璃炭。作为该项目初步结果的一个重要扩展，这项工作试图：(1)制备新的Boda化合物，并确定热路线和催化/引发路线的结构/性质关系。(2)将单体和活性中间体与无机间隔物、金属络合物、溶胶-凝胶前体和聚合物电解质结合在一起。(3)将初步的微细加工和热解研究扩展到量身定制的半导体玻璃碳和碳/无机杂化分子复合材料。该项目提供了一种新的方法，可用于高级应用的可加工和性能可控的结构，如发光二极管、光波导、低介电绝缘体、聚合物电解质膜、膜电极组件、电池和燃料电池的双极板、微电子/磁力机械系统，以及用于光信号处理器、传感器和开关的微半导体。计划采取一种跨学科的方法，涵盖合成、材料科学、聚合物物理和器件制造。在未来五年内，拟议的教育和推广计划将：(1)建立一个跨学科的基础聚合物科学课程，以补充克莱姆森大学目前提供的丰富的应用聚合物研究。(2)让本科生和研究生在校园和产业合作教育/实习中进行跨学科合作。(3)与跨社会聚合物教育理事会(IPEC)和教育学院合作，实施聚合物化学教师培训讲习班计划。(4)利用目前和未来在国家ACS级别的职位来加强当地的ACS科，并将领导扩大到学生附属项目。