Spectroscopy of Molecular Excitons

1. Experimental Background.- 1.1 Molecular Crystals.- 1.2 Electronic Spectra of Molecules.- 1.3 Comparing the Electronic Spectrum of a Crystal and That of a Molecule.- 1.4 Isotopic Effect in Electronic Spectra.- 1.5 Spectra of Doped Crystals.- 1.6 Electronic Spectra of Crystals and the Spectroscopy of Molecular Excitons.- 2. Exciton Spectra of Perfect Crystals.- 2.1 Molecular Excitons.- 2.2 Wave Functions and the Energy Spectrum of Excitons.- 2.3 Exciton Green's Function.- 2.4 Conductivity Tensor of a Crystal.- 2.5 Exciton Bands of Molecular Crystals.- 3. Exciton Spectra of Doped Crystals.- 3.1 Imperfect Crystal s.- 3.2 The Theory of the Absorption of Light by Local Excitons: Isotopic Impurities.- 3.3 Exciton Spectra of an Isotopic Impurity.- 3.4 The Exciton Spectra of Aggregates of Isotopic Guest Molecules in IDC.- 3.5 Exciton Spectra of Defect Centres.- 4. Exciton Spectra of Mixed Crystals.- 4.1 Energy Spectra of Mixed Crystals.- 4.2 Average-Amplitude Approximation.- 4.3 Mixed Crystals of d-Naphthalenes. The Genesis of Exciton Bands.- 4.4 Methods of Calculating Mixed-Crystal Spectra.- 4.5 Mixed-Crystal Spectra. A Comparison of Theory with Experiment.- 4.6 Migration of Excitons and Localization of Exciton States in Mixed Crystals.- 5. Band-to-Band Transition Spectra.- 5.1 Classification of Vibronic Spectra.- 5.2 Band-to-Band Transitions in Perfect Crystals.- 5.3 Band-to-Band Spectra of Mixed Crystals.- 6. Vibronic Spectra of Molecular Crystals.- 6.1 Exciton-Phonon Interaction.- 6.2 Dynamical Theory of Vibronic Spectra.- 6.3 Vibronic Absorption Spectra of the Solid Aromatic Compounds.- 6.4 A Quantitative Interpretation of the Vibronic Spectra of Crystals Based on the Dynamical Theory.- 6.5 Vibronic Spectra of Imperfect Crystals.- Conclusion.- Appendix A IntramolecularVibronic Interaction in Terms of the Secondary-Quantization Representation.- Appendix B Theory of Degenerate Perturbations.- References.