Ajdarzadeh, Ahmad; Consani, Cristina; Bräm, Olivier; Tortschanoff, Andreas; Cannizzo, Andrea; Chergui, Majed (2013). Ultraviolet transient absorption, transient grating and photon echo studies of aqueous tryptophan. Chemical physics, 422, pp. 47-52. Elsevier 10.1016/j.chemphys.2013.01.036
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We compare UV transient grating (TG) experiments of aqueous tryptophan with transient absorption (TA) and fluorescence up-conversion measurements. The TG and TA signals show a bi-exponential rise with sub-ps and ps time constants, which are consistent with the fluorescence studies. Using experimental data, we provide an equation for the homodyne-detected TG signal, taking into account the sub-100 fs internal conversion of tryptophan after excitation. In addition, we measure a sub-100 fs homogeneous electronic dephasing time for tryptophan in water by the photon echo (PE) technique. These measurements provide a consistent picture of excited state dynamics of aqueous tryptophan that may serve as a basis for coherent 2D-UV spectroscopy of biosystems.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Institute of Applied Physics 08 Faculty of Science > Institute of Applied Physics > Lasers |
UniBE Contributor: |
Cannizzo, Andrea |
Subjects: |
600 Technology > 620 Engineering 500 Science > 530 Physics 500 Science > 540 Chemistry |
ISSN: |
0301-0104 |
Publisher: |
Elsevier |
Language: |
English |
Submitter: |
Andrea Cannizzo |
Date Deposited: |
10 Feb 2021 12:18 |
Last Modified: |
05 Dec 2022 15:45 |
Publisher DOI: |
10.1016/j.chemphys.2013.01.036 |
BORIS DOI: |
10.48350/151352 |
URI: |
https://boris.unibe.ch/id/eprint/151352 |
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