Molecular Photonic Materials

该奖项授予约翰霍普金斯大学的Gerald J. Meyer，由化学部门的先进材料项目和数学与物理科学理事会的多学科活动办公室共同支持。研究的重点是半导体界面上的电荷分离。具体来说，有机金属电荷转移配合物将被锚定在通过溶胶-凝胶技术制备的介孔二氧化钛和氧化锆胶体膜上，并将探索敏化剂和半导体之间电荷和电子转移的光化学和光物理学。对分子前体、胶体、凝胶和纳米晶膜的研究将允许在分子水平上探索扩展固体的超分子性质。现场时间分辨光谱和电化学技术将用于量化电子传递动力学和能量学。这项研究将为半导体和绝缘体衍生界面上分子激发态的命运提供见解，并将允许系统地制备各种新型材料。该研究应用于太阳能转换、化学传感、环境解毒、记忆存储、催化和电光开关等领域。

This renewal award to Gerald J. Meyer at Johns Hopkins University is jointly supported by the Advanced Materials Program in the Chemistry Division and the Office of Multidisciplinary Activities in the Directorate of Mathematical and Physical Sciences. The focus of the research is charge separation at semiconductor interfaces. Specifically, organometallic charge-transfer complexes will be anchored to mesoporous titania and zirconia colloidal films prepared by sol-gel techniques and the photochemistry and photophysics of charge and electron transfer between the sensitizer and the semiconductor will be probed. Studies of molecular precursors, colloids, gels, and nanocrystalline films will allow the supramolecular nature of extended solids to be explored at the molecular level. In situ time resolved spectroscopic and electrochemical techniques will be used to quantify electron transfer dynamics and energetics. This research will provide insights into the fates of molecular excited states at semiconductor and insulator derived interfaces and will allow a wide variety of novel materials to be systematically prepared. Applications of the research exist in solar energy conversion, chemical sensing, environmental detoxification, memory storage, catalysis and electro-optical switches.