Molecular Photonic Materials

无机化学、生物无机化学和金属有机化学项目的这一奖项支持约翰·霍普金斯大学的杰拉尔德·J·迈耶教授将光诱导电荷分离事件与分子催化相结合的研究。将进行实验，以使集成材料的开发能够收集阳光，电荷分离，并执行多电子转移催化形成有用的燃料。利用稳态和时间分辨的电化学和光谱技术表征金属-配体电荷转移(MLCT)激发下Ru(II)和Fe(II)配位化合物的氧化还原反应，这些配位化合物集成并空间排列在由宽禁带半导体二氧化钛或绝缘体氧化锆组成的溶胶-凝胶工艺的介孔纳米晶薄膜中。一个目标是专门阐明配位场激发态在非辐射衰变和光化学配体丢失中所起的作用。这项研究旨在确定能够有效地将阳光转化为有用形式的能量的材料，并将专门探索配位场激发态的反应性，这些激发态在历史上限制了许多化合物用于能量转换的用途。该项目将把年轻科学家培养成未来的专业人员，并与跨学科的材料化学建立联系。该协会还计划举办关于能源和环境化学的研讨会和研讨会。还将开发新的实验室实验和课堂教学材料。

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.