CAREER: Conjugated Ionomers: Synthesis, Self-Doping, and New Device Architectures

这个CAREER奖的研究项目旨在开发共轭聚合物界面的新概念：使用共轭离聚体在不同掺杂的共轭聚合物之间形成稳定的界面。这一概念的实现将为共轭聚合物界面的研究开辟一条新的途径。这条途径对界面共轭聚合物电子学的基础研究有很大的希望，并可能导致许多令人兴奋的新设备技术。该研究计划有三个主要要素：(1)开发开环聚合技术，用于合成具有可电离官能密度可控的共轭离聚体；(2)开发创新的掺杂方法，用于制备真正的自掺杂聚合物和制备每层具有不同掺杂特性的多层结构；(3)对差异掺杂共轭聚合物之间界面的基础研究。例如聚合物pn结，以测试半导体界面的电流流动和耗尽的传统模型。在这个职业奖中，还详细介绍了支持各级化学教育的活动。在本科阶段，描述了俄勒冈大学在普通化学课程中实施经过测试的创新方案；其中包括强调通过探究学习和向同伴学习的概念。其目标是让学生更好地参与到自己的教育中，并超越科学事实，教授科学是如何完成的。在研究生阶段，这些项目致力于提高俄勒冈州的能力，以更好地满足个别学生的教育和职业目标，同时保持科学的严谨性和符合化学高级学位的高标准。这项工作的主要成果将是：(1)自掺杂聚合物，其中注入电荷的水平l由共价结合离子中心的密度精确平衡；(2)涉及接触差分掺杂共轭聚合物的所有聚合物pn结和其他器件结构的一般方法；(3)对共轭聚合物耗损的系统研究；(4)对共轭聚合物在半导体器件应用中的前景有更清晰的认识。＊＊＊

9703311 Lonergan The research program in this CAREER award targets the development of a new concept in conjugated polymer interfaces: the use of conjugated ionomers to form stable interfaces between dissimilarly doped conjugated polymers. The realization of this concept will open a new avenue in the study of conjugated polymer interfaces. An avenue that has great promise for the fundamental study ofthe electronics of conjugated polymers at interfaces and that may lead to a number of exciting new device technologies. The research program has three major elements: (1) a synthetic effort to develop ring-opening polymerization techniques for the synthesis of conjugated ionomers with a controlled density of ionizable functionalities, (2) the development of innovative doping methodologies for the preparation of truly self-doped polymers and for the preparation of multilayer structures in which each layer has different doping characteristics, and (3) the fundamental study of interfaces between differentially doped conjugated polymenrs, such as the polymeric pn junction, to test traditional models of current flow and depletion at semiconductor interfaces. In this CAREER award, activities in support of chemical education at a variety levels are also detailded. At the undergraduate level, a program of implementing tested innovations into the general chemistry curriculum at the University of Oregon is described; these include an emphasis on the concepts of learning through inquiry and of learning from peers. The goal is to better involve students in their own education and go beyond the facts of science to teach how science is done. On the graduate level, the projects works toward improving Oregon's ability to better meet the educational and career goals of individual students while maintaining the scientific rigor and high standards befitting an Advanced degree in chemistry. %%% The primary outcomes of this work will be: (1) self-doped polymers where the leve l of injected charge is precisely balanced by the density of covalently bound ionic centers, (2) a general approach to all polymeric pn junctions and other device structures involving contacted differentially doped conjugated polymers, (3) a systematic study of depletion in conjugated polymers, and (4) a clearer picture of the promise for conjugated polymers in semiconductor device applications. ***