Acceleration of Metal Ion Incorporation into Cationic Porphyrin by 5-Sulfo-8-quinolinol, and Spectrophotometric Determination of Nickel(II) |
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| Authors: | Kunio Kawamura Shukuro Igarashi Takao Yotsuyanagi |
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| Affiliation: | (1) Department of Applied Chemistry, Osaka Prefecture University, 599-8531 Sakai, Osaka, Japan;(2) Department of Materials Science, Faculty of Engineering, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi 316, 316-8511 Ibaraki, Japan;(3) Miyagi National College of Technology, Medeshima Shiote Nodayama 48, 981-1239 Natori, Miyagi, Japan |
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| Abstract: | The incorporation of metal ions into 5,10,15,20-tetrakis(4-N-methylpyridyl)porphine (TMPYP) were significantly accelerated by 5-sulfo-8-quinolinol (SQN). The formation of Ni–TMPYP was completed within 5 min at 100 °C. Based on the comparison of the acceleration effect of SQN with 8-quinolinol (QN), it was deduced that the acceleration of the incorporation reaction is mainly due to the enhancement of the formation of the outer-sphere associate of Ni(II)–SQN complex with TMPYP, in which the association is enhanced by both electrostatic and hydrophobic interactions between TMPYP and Ni(II)–SQN. This finding was applied to the spectrophotometric determination of Ni(II). |
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| Keywords: | : UV-visible spectrophotometry water-soluble porphyrin hydrothermal reactions accelerator nickel. |
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