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Issue 31, 2007
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Singlet oxygen generation by two-photon excitation of porphyrin derivatives having two-photon-absorbing benzothiadiazole chromophores

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Abstract

Porphyrin derivatives with four two-photon absorbing 2,1,3-benzothiadiazole chromophores at the meso positions provide large two-photon absorption cross-sections up to 735 GM as well as large quantum yields of one-photon singlet oxygen sensitization of ca. 0.7, leading to generation of singlet oxygen by two-photon excitation of 800 nm. The two-photon singlet oxygen sensitization is discussed on the basis of a parameter of the normalized oxygen luminescence intensity obtained from the two-photon experiment.

Graphical abstract: Singlet oxygen generation by two-photon excitation of porphyrin derivatives having two-photon-absorbing benzothiadiazole chromophores

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Publication details

The article was received on 26 Mar 2007, accepted on 08 May 2007 and first published on 18 May 2007


Article type: Paper
DOI: 10.1039/B704499B
Citation: J. Mater. Chem., 2007,17, 3341-3346
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    Singlet oxygen generation by two-photon excitation of porphyrin derivatives having two-photon-absorbing benzothiadiazole chromophores

    T. Ishi-i, Y. Taguri, S. Kato, M. Shigeiwa, H. Gorohmaru, S. Maeda and S. Mataka, J. Mater. Chem., 2007, 17, 3341
    DOI: 10.1039/B704499B

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