Photon energy upconversion in porphyrins: one-photon hot-band absorption versus two-photon absorption
We study the porphyrin S1 → S0 fluorescence and the photosensitized singlet oxygen 1Δg → 3∑g phosphorescence, both originating from absorption of photons with energy less than the porphyrin S0 → S1 transition energy. By measuring the excitation intensity dependence of fluorescence at lowered sample...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2003
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