S. Igarashi, H. Furukawa, Takanori Kawakami
1995
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Abstract
New water-soluble porphyrins having fluorine groups [i.e., 5,10,15,20-tetrakis(2-fluorosulfophenyl)porphine, 5,10,15,20-tetrakis(2,6-difluorosulfophenyl)porphine and 5,10,15,20-tetrakis(2,3,5,6,-tetrafluorosulfophenyl)porphine (TF4SP)] have been synthesised and characterized. Moreover, the spectrophotometric determination of 10–7 mol dm–3 levels of lead(II) ion using TF4SP has been demonstrated (IµPb–TF4SP= 20 × 104 mol–1 dm3 cm–1; reaction time, 2 min at 25 °C; and pH =9).