Time-resolved Intramolecular Photoelectron Diffraction (TIPD) of Ions in the Gas-phase

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Being able to probe structural (electronic and geometric) change on the timescale of atomic motion(femtoseconds) offers the most direct route to understanding the structure-function relationship inchemistry, which underpins much of modern technology. Here, we propose the conceptually novelmethod, Time-resolved Intramolecular Photoelectron Diffraction (TIPD), in which photoelectrons arediffracted from negatively-charged functional groups in a mass-selected gas-phase polyanion. Themeasured interferogram contains structural information about the location of charge-sites relative tothe molecular orbital from which an electron is detached. It can be measured with sub-100 fsresolution to enable real-time probing of photoinduced processes including charge-transferprocesses and structural transformations in, for example, proteins and conducting polymers.