Molecular Photonic Materials

分子光子材料

• 批准号: 0616500
• 负责人: Gerald Meyer
• 金额: $ 40万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0616500&HistoricalAwards=false
• 关键词: Molecular; Photonic; Materials

This award in the Inorganic, Bioinorganic and Organometallic Chemistry program supports research by Professor Gerald J. Meyer at the Johns Hopkins University to couple photo-induced charge separation events with molecular catalysis. Experiments will be performed to enable the development of integrated materials capable of harvesting sunlight, charge separation, and performing multielectron transfer catalysis to form useful fuels. Steady state and time resolved electrochemical and spectroscopic techniques will be used to characterize redox reactions that occur after metal-to-ligand charge-transfer (MLCT) excitation of Ru(II) and Fe(II) coordination compounds integrated and spatially arranged within sol-gel processed mesoporous nanocrystalline thin films, comprised of the wide bandgap semiconductor TiO2 or the insulator ZrO2. A goal is to specifically elucidate the role ligand field excited states play in non-radiative decay and photochemical ligand loss. This research intends to identify materials that efficiently convert sunlight into useful forms of energy and will specifically probe the reactivity of ligand field excited states that have historically limited the utility of many compounds for energy conversion. The project will train young scientists to be future professionals and forge links to interdisciplinary materials chemistry. The PI has also planned symposium and workshop on energy and environmental chemistry. New laboratory experiments and classroom instructional materials will also be developed.

这个无机、生物无机和有机金属化学项目的奖项支持约翰霍普金斯大学的Gerald J. Meyer教授将光诱导电荷分离事件与分子催化结合起来的研究。将进行实验，以开发能够收集阳光，电荷分离和执行多电子转移催化以形成有用燃料的集成材料。稳态和时间分辨电化学和光谱技术将用于表征Ru（II）和Fe（II）配位化合物在溶胶-凝胶处理的介孔纳米晶体薄膜中集成和空间排列的金属到配体电荷转移（MLCT）激发后发生的氧化还原反应，该薄膜由宽带隙半导体TiO2或绝缘体ZrO2组成。目的是明确阐明配体场激发态在非辐射衰变和光化学配体损失中的作用。本研究旨在确定有效地将阳光转化为有用形式的能量的材料，并将特别探索配体场激发态的反应性，这些反应性历来限制了许多化合物用于能量转换的效用。该项目将培养年轻的科学家成为未来的专业人士，并建立跨学科材料化学的联系。PI还计划了关于能源和环境化学的专题讨论会和讲习班。还将开发新的实验室实验和课堂教学材料。