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.

该奖项属于无机、生物无机和有机金属化学项目，支持约翰·霍普金斯大学 Gerald J. Meyer 教授将光致电荷分离事件与分子催化耦合的研究。将进行实验以开发能够收集阳光、电荷分离和进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在溶胶内集成和空间排列的 Ru(II) 和 Fe(II) 配位化合物在金属到配体电荷转移 (MLCT) 激发后发生的氧化还原反应。凝胶处理的介孔纳米晶薄膜，由宽带隙半导体 TiO2 或绝缘体 ZrO2 组成。 一个目标是专门阐明配体场激发态在非辐射衰变和光化学配体损失中所起的作用。 这项研究旨在识别能够有效地将阳光转化为有用能量形式的材料，并将专门探讨配体场激发态的反应性，这种反应性历来限制了许多化合物在能量转换方面的用途。 该项目将培训年轻科学家成为未来的专业人士，并与跨学科材料化学建立联系。 PI还计划举办能源与环境化学研讨会和研讨会。 还将开发新的实验室实验和课堂教学材料。