Synthesis and Organization of Electronic Molecular and Polymeric Materials

技术概述：该计划由DMR固态和材料化学计划以及CHE大分子、超分子和纳米化学计划支持。这项工作旨在合成功能有机材料及其组装方法。具体主题包括使用新的分子形状组织液晶材料，例如刚性三茂铁单元以增强液晶排列。类似的组织力可以应用于表面，将使用针对特定光化学反应引起的大规模骨骼重排的调查来创建特定的表面对齐。在分子半导体领域，将研究长程有序和短程有序对电子输运性质的影响。器件中不同的全局排列试图确定组合的铂、dz2和p轨道相互作用是否可以在取向的软晶相中导致高迁移率。其他研究将集中在液晶中的开壳有机材料上。分子内强电子耦合的多自由基将被询问，以检查磁有序是否可以在电子传输(即磁阻)中发挥作用。复杂的多环碳网络材料将通过Diels Alder反应来合成，以努力创建包含亚苯基的高级并烯结构和碳纳米管的合成。非技术摘要：基于分子的电子材料及其相关技术正迅速成为日常生活的一部分。目前，这些技术的影响受到材料固有性能的限制。这项研究将推动新的设计范式，寻求生产具有增强的电子传输的材料。它将进一步开发具有新型电子相互作用的材料，这些材料可以导致新的物理现象，可能成为未来技术的基础。接受过这方面培训的学生将做好准备，为这个新兴行业做出贡献。此外，PI将继续努力创造更高的劳动力多样性，继续推动和组织研讨会，寻求为处于不利地位的美国人的科学事业赋权。

TECHNICAL SUMMARY: This program is supported by the DMR Solid State and Materials Chemistry Program and the CHE Macromolecular, Supramolecular, and Nanochemistry Program.This effort is directed at the synthesis of functional organic materials and methods for their assembly. Specific themes include the organization of liquid crystalline materials using novel molecular shapes such as rigid triptycene units to enhance liquid crystal alignment. Similar organizational forces can be applied at surfaces and investigations focusing on large skeletal rearrangements caused by specific photochemical reactions will be used to create specific surface alignments. In the area of molecular semiconductors, investigations of the role of long-range and short-range order on the electronic transport properties will be performed. Different global alignments in devices seek to determine if combined Pt dz2 and p-orbital interactions can lead to high mobility in oriented soft crystal phases. Other investigations will focus on open-shell organic materials in liquid crystals. Polyradicals that are strongly electronically coupled intramolecularly will be interrogated to examine if magnetic ordering can play a role in electron transport (i.e. magnetoresistance). Complex polycyclic carbon network materials will be synthesized using Diels Alder reactions in an effort to create higher acene structures containing phenylene units and the synthesis of carbon nanotubes.NON-TECHNICAL SUMMARY: Molecular based electronic materials and associated technology is rapidly becoming part of everyday life. Presently, the impact of these technologies is limited by the intrinsic performance of the materials. This research will push forward new design paradigms that seek to produce materials with enhanced electronic transport. It will further develop materials having new types of electronic interactions that can lead to new physical phenomena that can be the basis of future technologies. The students trained in this effort will be prepared to contribute to this emerging industry. In addition, the PI will continue his efforts to create higher diversity in the workforce by continuing to promote and organize workshops that seek to empower the scientific careers of disadvantaged Americans.