Molecular Spectroscopy-XI (eBook)

Front Cover 1
Molecular Spectroscopy—XI 4
Copyright Page 5
Table of Contents 6
ORGANIZING COMMITTEE 7
CHAPTER 1. INFLUENCE OF MAGNETIC FIELDS ON LUMINESCENCE INVOLVING TRIPLET EXCITONS 8
ABSTRACT 8
INTRODUCTION 8
FINE STRUCTURE MODULATION (FSM) 9
HYPERFINE MODULATION (HFM) 20
CONCLUSION 25
ACKNOWLEDGEMENTS 25
REFERENCES 26
CHAPTER 2. EXCITON SPECTRA OF MOLECULAR CRYSTALS 28
ABSTRACT 28
1. Introduction 28
2. The BASIC PROBLEM AND APPROACHES TO ITS SOLUTION 29
3. METHODS OF THE DENSITY OF STATES DETERMINATION 34
4. METHODS OF DETERMINATION OF THE ENERGY SPECTRUM 43
5. CONCLUSION 49
REFERENCES 51
CHAPTER 3. EQUIVALENCE OF FOURIER SPECTROSCOPY AND SLOW PASSAGE IN NUCLEAR MAGNETIC RESONANCE 54
ABSTRACT 54
1. INTRODUCTION 54
2. CONDITIONS FOR EQUIVALENCE 55
3. FOURIER SPECTROSCOPY IN CIDNP EXPERIMENTS 58
4. FOURIER MEASUREMENTS OF OVERHAUSER EFFECTS 60
5. FOURIER DOUBLE RESONANCE EXPERIMENTS 61
6. MODULATION EFFECTS IN FOURIER SPECTROSCOPY 64
7. SYSTEMS WITH NON-LINEAR DENSITY OPERATOR EQUATION 65
ACKNOWLEDGEMENTS 66
REFERENCES 66
CHAPTER 4. CARBON-13 MAGNETIC RESONANCE IN STUDIES OF MOLECULAR DYNAMICS AND STRUCTURE 68
ABSTRACT 68
ACKNOWLEDGEMENTS 78
CHAPTER 5. PHOSPHORESCENCE MICROWAVE DOUBLE RESONANCE IN EXCITON STATES OF MOLECULAR CRYSTALS AND COHERENT STATES OF TRIPLET SPIN ENSEMBLES 80
ABSTRACT 80
1. INTRODUCTION 81
2. OPTICALLY DETECTED MAGNETIC RESONANCE IN COHERENT EXCITON STATES 83
3. OPTICALLY DETECTED ELECTRON SPIN ECHOES AND ECHO TRAINS IN MOLECULAR EXCITED TRIPLET STATES 87
4. ACKNOWLEDGEMENTS 90
REFERENCES 91
CHAPTER 6. EXPERIMENTAL STUDIES OF TRIPLET EXCITON BANDS OF MOLECULAR CRYSTALS 92
ABSTRACT 92
LUMINESCENCE PROPERTIES OF LINEAR CHAIN SYSTEMS 94
BAND-TO-BAND TRANSITIONS 96
EXCITON–PHONON COUPLING 96
BAND-STRUCTURE AND CARBON-13 TRANSITIONS 98
HEAVY DOPING AS BAND-STRUCTURE INDICATOR 100
TWO-PHOTON SPECTROSCOPY AND EXCITONS 102
REFERENCES 103
CHAPTER 7. SOME MOLECULAR ASPECTS OF IMPURITY AND INTRINSIC EXCITATIONS IN ALKALI 
104 
ABSTRACT 104
IMPURITY EXCITATIONS 104
REFERENCES 114
CHAPTER 8. SPECTROSCOPIC INVESTIGATIONS OF INTRAMOLECULAR RELAXATIONS IN ORGANIC COMPLEX MOLECULES 118
ABSTRACT 118
REFERENCES 152
CHAPTER 9. STUDY OF THE STRUCTURE AND COMPLEXATION OF ORGANIC AND INORGANIC DERIVATIVES OF METALS BY MEANS OF N.M.R. SPECTROSCOPY OF HEAVY NUCLEI 154
ABSTRACT 154
TIN COMPOUNDS 154
MERCURY COMPOUNDS 159
REFERENCES 164
CHAPTER 10. SMALL MOLECULAR IONS AS IMPURITY CENTRES IN CRYSTALS 168
ABSTRACT 168
1. INTRODUCTION 168
2. THE STRUCTURE OF MOLECULAR IMPURITY CENTRES IN ALKALI HALIDE CRYSTALS 170
3. ELECTRON STATES OF MOLECULAR IONS PARAMETERS OF POTENTIAL CURVES
4. LIBRATIONAL–ROTATIONAL MOTION 175
5. ELECTRON–PHONON INTERACTIONS 180
6. HOT LUMINESCENCE 184
7. CONCLUSION 185
ACKNOWLEDGEMENTS 185
REFERENCES 186
CHAPTER 11. MODERN TRENDS IN QUASI-LINEAR SPECTRA STUDIES 190
ABSTRACT 190
REFERENCES 201
CHAPTER 12. EXCITON–EXCITON INTERACTIONS IN MOLECULAR ORGANIC CRYSTALS 204
1. INTRODUCTION 204
2. MOLECULAR AND CHARGE-TRANSFER ELECTRON EXCITATIONS OF THE CRYSTAL 205
3. CRYSTAL HAMILTONIAN IN ELECTRON EXCITATION SECOND-QUANTIZED REPRESENTATION 206
4. MOLECULAR AND CHARGE-TRANSFER EXCITONS 207
5. MOLECULAR BIEXCITONS 210
6. GAS KINETIC AND DIFFUSION THEORY OF TWO EXCITON NON-RADIATIVE ANNIHILATION 213
ACKNOWLEDGEMENT 216
REFERENCES 216
CHAPTER 13. OPTICAL PROPERTIES AND MOLECULAR INTERACTIONS 218
ABSTRACT 218
1. DEPOLARIZATION OF SCATTERED LIGHT BY COMPRESSED ARGON GAS 219
2. TRANSLATIONAL FAR-I.R. SPECTRA OF RARE GASES 221
3. GAS PHASE STUDIES 223
4. SOLID-STATE STUDIES AS A FUNCTION OF PRESSURE 224
5. ELECTRONIC SPECTRA—SOLID STATE 227
REFERENCES 230
CHAPTER 14. NITROGEN N.M.R. SPECTROSCOPY 232
ABSTRACT 232
INTRODUCTION 232
BRIEF SURVEY OF EXPERIMENTAL METHODS 233
NITROGEN CHEMICAL SHIFTS 234
NITROGEN COUPLING CONSTANTS 238
NUCLEAR QUADRUPOLE EFFECTS IN 14N N.M.R. 239
GENERAL REMARKS 240
REFERENCES 240
CHAPTER 15. STUDIES OF THE MOLECULAR CONFORMATIONS IN PROTEINS BY 1H AND 13C N.M.R. SPECTROSCOPY 242
ABSTRACT 242
INTRODUCTION 242
GENERAL ASPECTS 242
CONCLUSION 254
ACKNOWLEDGEMENTS 254
REFERENCES 254