Preface ........................................................ IX
1 Electron Transfer Theories ................................... 1
1.1 Introduction ............................................ 1
1.2 Theoretical Models ...................................... 1
1.2.1 Basic Two States Models .......................... 1
1.2.1.1 Landau-Zener Model ...................... 1
1.2.1.2 Marcus Model ............................ 3
1.2.1.3 Electronic and Nuclear Quantum
Mechanical Effects ...................... 5
1.2.2 Further Developments in the Marcus Model ......... 7
1.2.2.1 Electron Coupling ....................... 7
1.2.2.2 Driving Force and Reorganization
Energy .................................. 9
1.2.3 Zusman Model and its Development ................ 17
1.2.4 Effect of Nonequilibrity on Driving Force and
Reorganization .................................. 21
1.2.5 Long-Range Electron Transfer .................... 24
1.2.6 Spin Effects on Charge Separation ............... 28
1.2.7 Electron-Proton Transfer Coupling ............... 29
1.2.8 Specificity of Electrochemical Electron
Transfer ........................................ 33
1.3 Concerted and Multielectron Processes .................. 38
References .................................................. 40
2 Principal Stages of Photosynthetic Light Energy Conversion .. 45
2.1 Introduction ........................................... 45
2.2 Light-Harvesting Antennas .............................. 46
2.2.1 General ......................................... 46
2.2.2 Bacterial Antenna Complex Proteins .............. 47
2.2.2.1 The Structure of the Light-Harvesting
Complex ................................ 47
2.2.2.2 Dynamic Processes in LHC ............... 48
2.2.3 Photosystems I and II Harvesting Antennas ....... 49
2.3 Reaction Center of Photosynthetic Bacteria ............. 53
2.3.1 Introduction .................................... 53
2.3.2 Structure of RCPB ............................... 56
2.3.3 Kinetics and Mechanism of Electron Transfer in
RCPB ............................................ 58
2.3.4 Electron Transfer and Molecular Dynamics in
RCPB ............................................ 64
2.4 Reaction Centers of Photosystems I and II .............. 68
2.4.1 Reaction Centers of PS I ........................ 69
2.4.2 Reaction Center of Photosystem II ............... 72
2.5 Water Oxidation System ................................. 76
References .................................................. 84
3 Photochemical Systems of the Light Energy Conversion ........ 91
3.1 Introduction ........................................... 91
3.2 Charge Separation in Donor-Acceptor Pairs .............. 92
3.2.1 Introduction .................................... 92
3.2.2 Cyclic Tetrapyrroles ............................ 93
3.2.3 Miscellaneous Donor-Acceptor Systems ........... 101
3.2.4 Photophysical and Photochemical Processes in
Dual Flourophore-Nitroxide Molecules (FNO) ..... 106
3.3 Electron Flow through Proteins ........................ 113
3.3.1 Factors Affecting Light Energy Conversion in
Dual Fluorophore-Nitroxide Molecules in a
Protein ........................................ 116
3.3.2 Photoinduced Interlayer Electron Transfer in
Lipid Films .................................... 118
References ................................................. 121
4 Redox Processes on Surface of Semiconductors and Metals .... 127
4.1 Redox Processes on Semiconductors ..................... 127
4.1.1 Introduction ................................... 127
4.1.2 Interfacial Electron Transfer Dynamics in
Sensitized TiO2 ................................ 127
4.1.3 Electron Transfer in Miscellaneous
Semiconductors ................................. 130
4.1.3.1 Single-Molecule Interfacial Electron
Transfer in Donor-Bridge-
Nanoparticle Acceptor Complexes ....... 130
4.1 A Redox Processes on Carbon Materials ................. 133
4.2 Redox Processes on Metal Surfaces ..................... 136
4.3 Electron Transfer in Miscellaneous Systems ............ 144
References ................................................. 147
5 Dye-Sensitized Solar Cells I ............................... 151
5.1 General Information on Solar Cells .................... 151
5.2 Dye-Sensitized Solar Cells ............................ 153
5.2.1 General ........................................ 153
5.2.2 Primary Grвtzel DSSC ........................... 155
5.3 DSSC Components ....................................... 158
5.3.1 Sensitizers .................................... 158
5.3.1.1 Ruthenium Complexes ................... 158
5.3.1.2 Metalloporphyrins ..................... 159
5.3.1.3 Organic Dyes .......................... 161
5.3.1.4 Semiconductor Sensitizes .............. 167
5.3.2 Photoanode ..................................... 168
5.3.3 Injection and Recombination .................... 171
5.3.4 Charge Carrier Systems ......................... 175
5.3.5 Cathode ........................................ 182
5.3.6 Solid-State DSSC ............................... 185
References ................................................. 189
6 Dye-Sensitized Solar Cells II .............................. 199
6.1 Optical Fiber DSSC .................................... 199
6.2 Tandem DSSC ........................................... 202
6.3 Quantum Dot Solar Cells ............................... 208
6.4 Polymers in Solar Cells ............................... 211
6.5 Fabrication of Solar Cell Components .................. 219
6.6 Fullerene-Based Solar Cells ........................... 223
References ................................................. 229
7 Photocatalytic Reduction and Oxidation of Water ............ 235
7.1 Introduction .......................................... 235
7.2 Photocatalytic Dihydrogen Production .................. 236
7.2.1 Photocatalytic H2 Evolution over Ti02 .......... 236
7.2.2 Miscellaneous Semiconductor Photocatalysts
for H2 Evolution ............................... 237
7.2.3 Photocatalytic H2 Evolution from Water Based
on Platinum and Palladium Complexes ............ 240
7.3 Water Splitting into O2 and H2 ........................ 241
7.3.1 Thermodynamics and Feasable Mechanism of the
Water Splitting ................................ 241
7.3.2 Mn Clusters as Water Oxidizing Photocatalysts .. 242
7.3.2.1 Structure and Catalytic Activity of
Cubane Manganese Clusters ............. 242
7.3.2.2 Catalytic Activity and Mechanism of
WOS in Manganese Clusters ............. 244
7.3.3 Heterogeneous Catalysts for WOS ................ 248
7.3.3.1 General ............................... 248
7.3.3.2 Photocatalysts Based on Titanium
Oxides ................................ 250
7.3.3.3 Miscellaneous Semiconductors for the
WOS Catalysis ......................... 251
References ................................................. 256
Conclusions ................................................... 261
References .................................................... 263
Index ......................................................... 265
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