Issue 31, 2007
From the journal:

Journal of Materials Chemistry

Singlet oxygen generation by two-photon excitation of porphyrin derivatives having two-photon-absorbing benzothiadiazole chromophores†

Tsutomu Ishi-i,*ab   Yoshiki Taguri,c   Shin-ichiro Kato,c   Motoyuki Shigeiwa,*d   Hideki Gorohmaru,d   Shuuichi Maedad  and  Shuntaro Matakab  

* Corresponding authors

a Department of Biochemistry and Applied Chemistry, Kurume National College of Technology, 1-1-1 Komorino, Kurume, 830-8555, Japan
E-mail: ishi-i@kurume-nct.ac.jp
Fax: +81 942 35 9400
Tel: +81 942 35 9404

b Institute for Materials Chemistry and Engineering (IMCE), Kyushu University, 6-1 Kasuga-koh-en, Kasuga 816-8580, Japan

c Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasuga-koh-en, Kasuga 816-8580, Japan

d Mitsubishi Chemical Group Science and Technology Research Center, Inc., 1000 Kamoshida-cho, Aoba-ku, Yokohama 227-8502, Japan

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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Article information

DOI
https://doi.org/10.1039/B704499B
Article type
Paper
Submitted
26 Mar 2007
Accepted
08 May 2007
First published
18 May 2007

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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