التفاصيل البيبلوغرافية
| العنوان: |
Time-Domain Vibrational Action Spectroscopy of Cryogenically Cooled, Messenger-Tagged Ions Using Ultrafast IR Pulses |
| المؤلفون: |
Liangyi Chen (2156389), Jessika L. S. Dean (11719650), Joseph A. Fournier (1285497) |
| سنة النشر: |
2021 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Biophysics, Biochemistry, Medicine, Genetics, Inorganic Chemistry, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, Physical Sciences not elsewhere classified, traditional manner using, tagged parent ions, state vibrational populations, prerequisite first steps, loss action spectroscopy, loss action response, ultrafast vibrational spectroscopy, phase molecular ions, linear spectrum collected, linear action spectrum, domain vibrational spectrum, resolved ir laser, dimensional ir spectroscopy, domain data demonstrate, spectrum matches, domain interpretations, ultrafast infrared, linear frequency, results validate, pulse pair, probing dynamics, nonlinear signals |
| الوصف: |
Herein, we present the initial steps toward developing a framework that will enable the characterization of photoinitiated dynamics within large molecular ions in the gas phase with temporal and energy resolution. We combine the established techniques of tag-loss action spectroscopy on cryogenically trapped molecular ions with ultrafast vibrational spectroscopy by measuring the linear action spectrum of N 2 -tagged protonated diglycine (GlyGlyH + ·N 2 ) with an ultrafast infrared (IR) pulse pair. The presented time-domain data demonstrate that the excited-state vibrational populations in the tagged parent ions are modulated by the ultrafast IR pulse pair and encoded through the messenger tag-loss action response. The Fourier transform of the time-domain action interferograms yields the linear frequency-domain vibrational spectrum of the ion ensemble, and we show that this spectrum matches the linear spectrum collected in a traditional manner using a frequency-resolved IR laser. Time- and frequency-domain interpretations of the data are considered and discussed. Finally, we demonstrate the acquisition of nonlinear signals through cross-polarization pump–probe experiments. These results validate the prerequisite first steps of combining tag-loss action spectroscopy with two-dimensional IR spectroscopy for probing dynamics in gas-phase molecular ions. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| Relation: |
https://figshare.com/articles/journal_contribution/Time-Domain_Vibrational_Action_Spectroscopy_of_Cryogenically_Cooled_Messenger-Tagged_Ions_Using_Ultrafast_IR_Pulses/17035470 |
| DOI: |
10.1021/acs.jpca.1c01996.s001 |
| الاتاحة: |
https://doi.org/10.1021/acs.jpca.1c01996.s001 |
| Rights: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.51810831 |
| قاعدة البيانات: |
BASE |