Supramolecular Nano Structures for Light Driven Energy and Electron Transfer

用于光驱动能量和电子转移的超分子纳米结构

• 批准号: 0453464
• 负责人: Francis D'Souza
• 金额: $ 33.05万
• 依托单位: Wichita State 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: 2005-06-01 至 2008-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0453464&HistoricalAwards=false
• 关键词: Supramolecular; Nano; Structures; Light; Driven

The main focus of this research project is to rationally design and study self-assembled porphyrin-, fullerene-, and carbon nanotube-bearing supra-molecular complexes and nano structures that are essential for understanding the fundamentals of photoinduced energy and electron transfer reactions, as well as for developing optoelectronic devices. The principal aim of these efforts is to provide information on the distance and orientation dependences of charge- separation and charge-recombination in donor-acceptor conjugates, and in addition to this, to develop materials with longer-lived and more useful excited states.The broader impacts of the proposed supramolecular architectures and their study include diverse applications in materials chemistry, especially for building devices for light energy harvesting, and optoelectronics applications. Professor D'Souza is developing nanotech strategies for light energy harvesting. Such self-assembled constructions are beginning to obtain the same capabilities as natural photosynthetic systems. Such devices based on this type of chemistry facilitate energy strategies that are alternatives to dependence on oil. The work involves B3L VP/3-21G* (small basis set, hybrid density functional theory) calculations and integrates collaborative research efforts with scientists from national and international laboratories, The proposed research also provides extensive teaching and training of graduate, post-doctoral, undergraduate and women students (including NSF-REU students) involved in the interdisciplinary research program. Development of novel energy sources other than those based on fossil fuels or nuclear energy is a research topic that is of considerable scientific and societal importance.

本研究项目的主要重点是合理设计和研究自组装卟啉，富勒烯和碳纳米管轴承超分子复合物和纳米结构，这对于理解光诱导能量和电子转移反应的基本原理以及开发光电器件至关重要。这些努力的主要目的是提供关于供体-受体共轭物中电荷分离和电荷复合的距离和取向依赖性的信息，除此之外，开发具有更长寿命和更有用的激发态的材料。所提出的超分子结构及其研究的更广泛的影响包括材料化学中的各种应用，特别是用于构建用于光能收集的装置，和光电子应用。D 'Souza教授正在开发用于光能收集的纳米技术策略。这种自组装结构开始获得与天然光合系统相同的能力。基于这类化学物质的装置有助于替代依赖石油的能源战略。这项工作涉及B3 L VP/3- 21 G *（小基集，混合密度泛函理论）计算，并与来自国家和国际实验室的科学家整合了合作研究工作，拟议的研究还为参与跨学科研究计划的研究生，博士后，本科生和女学生（包括NSF-REU学生）提供了广泛的教学和培训。开发不同于基于化石燃料或核能的新能源是具有相当大的科学和社会重要性的研究课题。