Arabei, Serguei and Galaup, Jean-Pierre and McCaffrey, John G. and Shafizadeh, Niloufar and Crepin, Claudine
(2012)
Electronic spectroscopy, stimulated emission, and persistent spectral hole burning of
cryogenic nitrogen matrices doped with tetrabenzoporphin.
Low Temperature Physics, 38 (8).
pp. 727-731.
ISSN 1063-777X
Abstract
This paper deals with our on-going work on the electronic spectroscopy of tetrapyrrole molecules
embedded in cryogenic hosts. Under nanosecond laser excitation of free-base tetrabenzoporphin
molecules in a nitrogen matrix at 8K, increasing laser pulse energy results in essential enhancement
of the intensity of one or several vibronic emission lines in the fine-structure fluorescence spectrum.
Some characteristics of stimulated radiation are realized in the observed intense monochromatic
radiation as a result of a transition from the purely electronic S1 level to a vibrational sublevel of
the S0 state, corresponding to the excitation of C–C stretching vibrations of tetrapyrrole methane
bridges. We also report on persistent spectral hole-burning effects. Hole and antihole formation
analysis gives some insight on the photochemical properties of tetrabenzoporphin in a nitrogen
matrix.
| Item Type: |
Article
|
| Keywords: |
Electronic spectroscopy; stimulated emission; cryogenic nitrogen matrices; tetrabenzoporphin |
| Academic Unit: |
Faculty of Science and Engineering > Chemistry |
| Item ID: |
7772 |
| Identification Number: |
https://doi.org/10.1063/1.4746794 |
| Depositing User: |
Dr. John McCaffrey
|
| Date Deposited: |
17 Jan 2017 14:38 |
| Journal or Publication Title: |
Low Temperature Physics |
| Publisher: |
AIP Publishing |
| Refereed: |
Yes |
| URI: |
|
| Use Licence: |
This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available
here |
Repository Staff Only(login required)
 |
Item control page |
Downloads per month over past year
Origin of downloads
Altmetric
Altmetric