Femto- to Nanosecond Dynamics in Ionic Liquids: From Single Molecules to Collective Motions

摘要: The dynamics of room temperature ionic liquids (RTILs) have been intensively studied within the last decades as these are high relevance for solvation solutes in applications RTILs reaction media. Broadband dielectric spectroscopy (DS) can readily cover any ranging from seconds to femtoseconds and is thus a widely applied technique elucidate RTIL dynamics. As DS probes all that go along with change macroscopic polarization, excellently suited study such compounds, where motions its charged dipolar ions inevitably modulate sample polarization. However, interactions not only governed by long-ranged Coulombic forces. Also hydrogen bonding, pi-pi stacking dispersion forces contribute significantly local potential energy landscape, making extremely complex. To fully correlate dynamical information spectra molecular , combination other techniques exploring liquid-state advantageous allows unraveling wealth present provides detailed level insights. In this chapter we summarize recent advances understanding femto- nanosecond RTILs, which could be obtained using combined experimental theoretical efforts.