Photoelectron spectroscopy in molecular physical chemistry

Abstract

Photoelectron spectroscopy has long been a powerful method in the toolbox of experimental physical chemistry and molecular physics. Recent improvements in coincidence methods, charged-particle imaging, and electron energy resolution have...

New Approach to the Detection of Short-Lived Radical Intermediates

“…VUV-PIMS, in particular, can detect any radical and distinguish between isomers. 7 High resolution and high sensitivity, required for analysis of complex systems, can be achieved with synchrotron VUV-PIMS. Direct spectroscopic radical detection, however, requires advanced instrumentation which may not be suitable for all scenarios such as field or atmospheric chamber work.…”

Ammonia Borane, NH3BH3: A Threshold Photoelectron–Photoion Coincidence Study of a Potential Hydrogen‐Storage Material

“…In the past, we applied this approach to record ms‐TPE spectra of a number of boron containing molecules, [16] and revised the bond enthalpy of the Bi−C bond [17] . As ms‐TPES has the potential to isomer‐selectively detect intermediates in reactive flows, combustion, catalysis, atmospheric and astrochemistry, there is a strong need to obtain reference spectra [15a,18] …”

“…[14] In this scheme, electrons and ions from a single ionization event are correlated, leading to photoion mass-selected threshold photoelectron spectra (ms-TPES). [15] In the past, we applied this approach to record ms-TPE spectra of a number of boron containing molecules, [16] and revised the bond enthalpy of the BiÀ C bond. [17] As ms-TPES has the potential to isomer-selectively detect intermediates in reactive flows, combustion, catalysis, atmospheric and astrochemistry, there is a strong need to obtain reference spectra.…”

Photoelectron spectroscopy of low valent organophosphorus compounds, P–CH3, H–PCH2 and PCH2

“…8,9 It allows extracting mass-selected photoelectron spectra (ms-PES) that give insight into the electronic structure of both neutral and cation even in complex mixtures. 10 Previously, we recorded photoelectron spectra of molecules with the formal composition ECH 3 for N and Bi, to characterize their electronic structure. Note that the isolation of the pnctinidenes (E-R, E = N-Bi) under ambient conditions is challenging due to their high propensity for self-aggregation and achieved only for lighter members with bulky and electron-donating ligands.…”