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THE REDUCTION MECHANISMS OF WATER SOLUBLE PORPHYRINS
Bruce P. Neri
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Abstract
ix INTRODUCTION 1 Electrochemistry 5 Photochemical and Chemical Reduction „ 9 Solution Chemistry „ 9 Crystallography 10 Theoretical Considerations 11 METHODS 12 Apparatus 12 Materials 18 Procedures 19 RESULTS AND DISCUSSION 22 Thin-layer Cell Design 22 Reduction Mechanism of (TpPyCH3P)l4 29 Structure of (TpPyCH3P)l4 29 Polarography and Cyclic Voltammetry 31 Thin-layer Coulometry 42 Thin-layer Spectrometry 46 Rapid-scan Spectrophotometry 51 Proposed Mechanism 54 Reduction Mechanism of TmPyP Diacid , 59 Structure of TmPyP 59 Cyclic Voltammetry 61 Thin-layer Coulometry 63 Thin-layer Spectrometry 63 Proposed Mechanism 69 Reduction Mechanism of T0PyP Diacid 69 Structure of T0PyP 69 Cyclic Voltammetry 71 Thin-layer Coulometry 71 Thin-layer Spectrometry 74