title: Improving the robustness of cobalt porphyrin water oxidation catalysts by chlorination of aryl groups.
abstract: The water oxidation (WO) activity of a chlorinated cobalt tetraphenylporphyrin (CoClPS), possessing Cl atoms on the 2,6-positions of the aryl groups, shows higher resistance to attack by singlet oxygen, in situ generated during photochemical WO using Ru(bpy)3(2+) and S2O8(2-) with the turnover frequency (TOF) and turnover number (TON) reaching 1.7 s(-1) and 836, respectively.
authors.affiliation: Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan. t_nakazono@chem.kyushu-univ.jp ksakai@chem.kyushu-univ.jp and International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Nakazono
authors.affiliation: Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan. t_nakazono@chem.kyushu-univ.jp ksakai@chem.kyushu-univ.jp and International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan and Center for Molecular Systems (CMS), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
authors.forename: Ken
authors.initials: K
authors.lastname: Sakai