BASIC PHOTOELECTRIC STUDIES IN ORGANIC CONDENSED PHASE

关于电荷产生和传输的主要行为的问题 讨论了凝聚分子(有机)相。其中包括时间 解决了从纳秒到数百飞秒的研究 光激发电子从准自由到局域的演化 装饰品成双状态，到最终库仑免费携带 电。电离附近的凝聚相电子态 在纯净的液体和生物感兴趣的溶液中的连续介质 溶质分子有待鉴定。特殊双波束飞行时间 探测光生离子在电场中的迁移 希望带电物种的电子光谱能够 在皮摩尔水平上获得。贯穿非线性(多光子) 激发与超灵敏的电导或发光一起使用 侦测。外加电场和材料密度都是要 多种多样。其目的是这样的工作将解决潜在的 光合作用(以及氧化)能量储存过程 涉及跨膜和电子的矢量电的生物学 分子凝聚相中的传输链。

Issues concerning the primary act of charge generation and transport in the condensed molecular (organic) phase are addressed. These include time resolved studies from nanoseconds to hundreds of femtoseconds of the evolution of the photoexcited electron from quasi-free, to the locally dressed geminate condition, to finally Coulomb-free charge that carries electricity. Condensed phase electronic states near the ionization continuum in neat liquids and in solutions of biologically interesting solute molecules are to be identified. Special double beam time-of-flight probing of migrating photoproduced ions in an electric field is to be initiated in the hope that electronic spectra of charged species can be obtained at the picomolar level. Throughout nonlinear (multiphoton) excitation is used with ultrasensitive conductometric or luminescence detection. Both applied fields and material density are parameters to be varied. The intention is that such work will address the underlying processes in photosynthetic (as well as oxidative) energy storage in biology involving vectorial electricity across membranes and electron transport chains in the molecular condensed phase.