Gratz, H. and Penzkofer, Alfons (2000) Singlet-singlet excited-state absorption and triplet-triplet absorption of meso-tetraphenylporphine. CHEMICAL PHYSICS, 254 (2-3). pp. 363-374. ISSN 0301-0104
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The singlet-singlet excited-state absorption cross-section spectrum and the triplet-triplet absorption cross-section spectrum of meso-tetraphenylporphine (H2TPP) are determined in the wavelength range from 390 to 1450 nm. The S-1-singlet state is populated by intense picosecond pump pulse absorption (wavelength 527 nm, duration 6 ps). The T-1-triplet state is populated by S-1-T-1 intersystem crossing. The singlet-singlet absorption and the triplet-triplet absorption are probed with picosecond spectral light continua passing the sample after appropriate time delays. Absolute singlet-singlet and triplet-triplet absorption cross-sections are obtained by numerical simulation of the absorption dynamics. The similarity of the S-1-band-and T-1-band-based excited-state absorption cross-section spectra indicate a strong higher excited-state spin-orbit coupling. (C) 2000 Elsevier Science B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FREE-BASE PORPHIN; LASER; PORPHYRINS; PULSES; METALLOPORPHYRINS; SPECTRUM; meso-tetraphenylporphine; triplet-triplet absorption; excited-state singlet-singlet absorption |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Alfons Penzkofer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 17 May 2022 08:18 |
| Last Modified: | 17 May 2022 08:18 |
| URI: | https://pred.uni-regensburg.de/id/eprint/42609 |
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