scholarly journals Relaxation Dynamics in Photoexcited Chiral Molecules Studied by Time-Resolved Photoelectron Circular Dichroism: Toward Chiral Femtochemistry

2016 ◽  
Vol 7 (22) ◽  
pp. 4514-4519 ◽  
Author(s):  
Antoine Comby ◽  
Samuel Beaulieu ◽  
Martial Boggio-Pasqua ◽  
Dominique Descamps ◽  
Francois Légaré ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Relaxation Dynamics ◽  
Chiral Molecules ◽  
Time Resolved ◽  
Circular Dichroïsm

Ultrafast relaxation investigated by Photoelectron Circular Dichroism : an isomeric comparison of Camphor and Fenchone

2021 ◽  
Author(s):  
Valérie Blanchet ◽  
Dominique Descamps ◽  
stephane Petit ◽  
Yann Mairesse ◽  
bernard Pons ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Imaging Technique ◽  
Velocity Map Imaging ◽  
Relaxation Dynamics ◽  
Time Resolved ◽  
Pump Probe ◽  
Ultrafast Relaxation ◽  
Circular Dichroïsm ◽  
Isomeric Effects

We study isomeric effects using time resolved photoelectron circular dichroism (PECD). By a (1+1’)pump-probe ionisation with photoelectron collected by velocity map imaging technique, we compare relaxation dynamics from the 3s-Rydberg...

Probing ultrafast dynamics of chiral molecules using time-resolved photoelectron circular dichroism

2016 ◽  
Vol 194 ◽  
pp. 325-348 ◽  
Author(s):  
Samuel Beaulieu ◽  
Antoine Comby ◽  
Baptiste Fabre ◽  
Dominique Descamps ◽  
Amélie Ferré ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Extreme Ultraviolet ◽  
Single Photon ◽  
Rydberg States ◽  
Chiral Discrimination ◽  
Infrared Range ◽  
Ultrafast Dynamics ◽  
Chiral Molecules ◽  
Time Resolved ◽  
Circular Dichroïsm

Measuring the ultrafast dynamics of chiral molecules in the gas phase has been a long standing and challenging quest of molecular physics. The main limitation to reach that goal has been the lack of highly sensitive chiroptical measurement. By enabling chiral discrimination with up to several 10% of sensitivity, photoelectron circular dichroism (PECD) offers a solution to this issue. However, tracking ultrafast processes requires measuring PECD with ultrashort light pulses. Here we compare the PECD obtained with different light sources, from the extreme ultraviolet to the mid-infrared range, leading to different ionization regimes: single-photon, resonance-enhanced multiphoton, above-threshold and tunnel ionization. We use single and multiphoton ionization to probe the ultrafast relaxation of fenchone molecules photoexcited in their first Rydberg states. We show that time-resolved PECD enables revealing dynamics much faster than the population decay of the Rydberg states, demonstrating the high sensitivity of this technique to vibronic relaxation.

scholarly journals Capturing ultrafast magnetic dynamics by time-resolved soft x-ray magnetic circular dichroism

2017 ◽  
Vol 110 (16) ◽  
pp. 162401 ◽  
Author(s):  
Kou Takubo ◽  
Kohei Yamamoto ◽  
Yasuyuki Hirata ◽  
Yuichi Yokoyama ◽  
Yuya Kubota ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Magnetic Circular Dichroism ◽  
Time Resolved ◽  
Magnetic Dynamics ◽  
X Ray ◽  
Circular Dichroïsm

Time-resolved UV circular dichroism of phytochrome A: folding of the N-terminal region

1993 ◽  
Vol 115 (21) ◽  
pp. 9854-9855 ◽  
Author(s):  
Eefei Chen ◽  
William Parker ◽  
James W. Lewis ◽  
Pill Soon Song ◽  
David S. Kliger
Keyword(s):  
Circular Dichroism ◽  
Terminal Region ◽  
Phytochrome A ◽  
Time Resolved ◽  
Circular Dichroïsm

scholarly journals Photoexcitation circular dichroism in chiral molecules

2018 ◽  
Vol 14 (5) ◽  
pp. 484-489 ◽  
Author(s):  
S. Beaulieu ◽  
A. Comby ◽  
D. Descamps ◽  
B. Fabre ◽  
G. A. Garcia ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Chiral Molecules ◽  
Circular Dichroïsm
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