HIGH RESOLUTION ANION PHOTOELECTRON SPECTROSCOPY OF OLIGOTHIOPHENE LOW-LYING EXCITED STATES

2019 ◽  
Author(s):  
Cole Sagan ◽  
Etienne Garand ◽  
Glen Thurston
Keyword(s):  
High Resolution ◽  
Excited States ◽  
Photoelectron Spectroscopy ◽  
Anion Photoelectron Spectroscopy

High-resolution anion photoelectron spectroscopy of cryogenically cooled 4-atom silicon carbides

2020 ◽  
pp. 1-11 ◽  
Author(s):  
Mark C. Babin ◽  
Martin DeWitt ◽  
Marissa L. Weichman ◽  
Jessalyn A. DeVine ◽  
Daniel M. Neumark
Keyword(s):  
High Resolution ◽  
Photoelectron Spectroscopy ◽  
Silicon Carbides ◽  
Anion Photoelectron Spectroscopy

scholarly journals Unveiling the Coexistence of Cis and Trans Isomers in the Hydrolysis of ZrO2: A Coupled DFT and High-Resolution Photoelectron Spectroscopy Study

2020 ◽  
Author(s):  
Ali Abou Taka ◽  
Mark Babin ◽  
Xianghai Sheng ◽  
Jessalyn DeVine ◽  
Daniel Neumark ◽  
...  
Keyword(s):  
High Resolution ◽  
Photoelectron Spectroscopy ◽  
Experimental Spectrum ◽  
Velocity Map Imaging ◽  
Cis And Trans Isomers ◽  
Single Water Molecule ◽  
Anion Photoelectron Spectroscopy ◽  
Cis And Trans ◽  
Franck Condon ◽  
Hydrolysis Of

High-resolution anion photoelectron spectroscopy of the ZrO<sub>3</sub>H<sub>2</sub><sup>-</sup> and ZrO<sub>3</sub>D<sub>2</sub><sup>-</sup> anions and complementary electronic structure calculations are used to investigate the reaction between zirconium dioxide and a single water molecule, ZrO<sub>2</sub><sup>0/-</sup> + H<sub>2</sub>O. Experimental spectra of ZrO<sub>3</sub>H<sub>2</sub><sup>-</sup> and ZrO<sub>3</sub>D<sub>2</sub><sup>-</sup> were obtained using slow photoelectron velocity-map imaging (cryo-SEVI), revealing the presence of two dissociative adduct conformers and yielding insight into the vibronic structure of the corresponding neutral species. Franck-Condon simulations for both the \textit{cis}-- and \textit{trans}--dihydroxide structures are required to fully reproduce the experimental spectrum. Additionally, it was found that water-splitting is stabilized more by ZrO<sub>2</sub> than TiO<sub>2</sub>, suggesting Zr-based catalysts are more reactive toward hydrolysis.

scholarly journals Unveiling the Coexistence of Cis and Trans Isomers in the Hydrolysis of ZrO2: A Coupled DFT and High-Resolution Photoelectron Spectroscopy Study

2020 ◽  
Author(s):  
Ali Abou Taka ◽  
Mark Babin ◽  
Xianghai Sheng ◽  
Jessalyn DeVine ◽  
Daniel Neumark ◽  
...  
Keyword(s):  
High Resolution ◽  
Photoelectron Spectroscopy ◽  
Experimental Spectrum ◽  
Velocity Map Imaging ◽  
Cis And Trans Isomers ◽  
Single Water Molecule ◽  
Anion Photoelectron Spectroscopy ◽  
Cis And Trans ◽  
Franck Condon ◽  
Hydrolysis Of

High-resolution anion photoelectron spectroscopy of the ZrO<sub>3</sub>H<sub>2</sub><sup>-</sup> and ZrO<sub>3</sub>D<sub>2</sub><sup>-</sup> anions and complementary electronic structure calculations are used to investigate the reaction between zirconium dioxide and a single water molecule, ZrO<sub>2</sub><sup>0/-</sup> + H<sub>2</sub>O. Experimental spectra of ZrO<sub>3</sub>H<sub>2</sub><sup>-</sup> and ZrO<sub>3</sub>D<sub>2</sub><sup>-</sup> were obtained using slow photoelectron velocity-map imaging (cryo-SEVI), revealing the presence of two dissociative adduct conformers and yielding insight into the vibronic structure of the corresponding neutral species. Franck-Condon simulations for both the \textit{cis}-- and \textit{trans}--dihydroxide structures are required to fully reproduce the experimental spectrum. Additionally, it was found that water-splitting is stabilized more by ZrO<sub>2</sub> than TiO<sub>2</sub>, suggesting Zr-based catalysts are more reactive toward hydrolysis.

scholarly journals High-resolution photoelectron imaging and resonant photoelectron spectroscopy via noncovalently bound excited states of cryogenically cooled anions

2019 ◽  
Vol 10 (41) ◽  
pp. 9409-9423 ◽  
Author(s):  
Guo-Zhu Zhu ◽  
Lai-Sheng Wang
Keyword(s):  
High Resolution ◽  
Excited States ◽  
Photoelectron Spectroscopy ◽  
Photoelectron Imaging ◽  
Dynamical Information

Noncovalently bound excited states of anions have led to the development of resonant photoelectron spectroscopy with rich vibrational and dynamical information.

Photoionization dynamics in CS fragmented from CS2 studied by high-resolution photoelectron spectroscopy

2004 ◽  
Vol 82 (6) ◽  
pp. 744-749
Author(s):  
Anouk M Rijs ◽  
Ellen HG Backus ◽  
Cornelis A de Lange
Keyword(s):  
High Resolution ◽  
Triplet State ◽  
Key Words ◽  
Excited States ◽  
Ground State ◽  
Photoelectron Spectroscopy ◽  
Electronic States ◽  
Reactive Intermediates ◽  
Photoelectron Spectra ◽  
Singlet Ground State

The photoionization dynamics of CS have been studied using high-resolution laser photoelectron spectroscopy. The photodissociation of CS2 at ~308 nm results in highly rotationally excited CS in its X1Σ+ singlet ground state, as well as in rotationally cold CS in the excited a3Π triplet state. The ground-state CS fragments are formed together with sulfur in its 3P, 1D, and 1S electronic states; triplet CS is produced in coincidence with ground-state sulfur (3P). In both channels the photoelectron spectra are dominated by Δv = 0 propensity, but transitions involving Δv = 1 and 2 are also observed. Key words: photoelectron spectroscopy, photoionization, photodissociation, excited states, reactive intermediates.

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