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1. Organic Photochemistry - An Overview Video
1.1 Molecular Photochemistry of Organic Molecules
1.2 Photochemical Reactions
1.3 The Electronic Excitation and Deexcitation of Organic Molecules
1.4 State Energy Diagrams: Electronic and Spin Isomers
1.5 Calibration Points for Molecular Dimensions and molecular Motions
1.6 Calibration Points for Molecular energetics and Reaction Dynamics
1.7 The Nuclear Geometry of Electronically Exicted States
1.8 An Energy Surface Description of Molecular Energetics and reaction
1.9 Organic Photoreactions

2. Electronic Orbitals, Configurations, and States Video
2.1 Molecular Wavefunctions and Molecular Structure
2.2 The Born-Oppenheimer Approximation
2.3 The Spirit of the Use of Quantum Mechanical Operators
2.4 Atomic Orbitals, Molecular Orbitals, Electronic Configuration, and Electronic States
2.5 The Ground State Configuration
2.6 The Construction of Electronic States from Electronic Configurations
2.7 Visualization of Electron Spin: A Simple Vectorial Model
2.8 Vectorial Representation of Singlet and Triplet States Derived from a Single Configuration
2.9 Electronic Energy Difference between Singlet and Triplet States
2.10 The Expimental Measurement ofOrbital Energies: Photoelectron Spectroscopy

3. Transitions Between States - Chemical Dyanmics Video
3.1 Chemical Dynamics as Transitions between States
3.2 Classical Dynamics: Some Preliminary Comments
3.3 Quantum Dynamics: The Golden Rule for Transitions between States
3.4 Transitions between States: Evaluation of Transition Probabilities
3.5 Nuclear Motion; Vibronic States
3.6 Singlet-Triplet Interconversions

4 . Potential Energy Surfaces Video
4.1 Potential Energy Curves and Potential Enegery Surfaces
4.2 Movement of a Classical Particle on a Surface
4.3 Potential Energy Curves and Surfaces for Visualization of Molecular Behavior
4.4 The Quantum Mechanical Version of the Harmonic Oscillator
4.5 The Influence of Collisions and Vibrations on the Motion of the Representative Point
4.6 Transitions between Potential Energy Surfaces
4.7 The Franck-Condon Principle and Radiative Transitions: A Classical Model
4.8 The Franck-Condon Principle and radiative Transitions: Analogy to a Vibrating Sping
4.9 Visualization of "Chemical" versus "Physical" Mechanisms of Radiationless Transitions

5. Radiative Transitions - The Absorption and Emission of Light
5.1 Absorption and Emission Spectra of Organic Molecules
5.2 Typical Experimental Absorption and Emission Spectra of Organic Molecules
5.3 The Nature of Light: Electromagnetic Waves and Oscillating Electric Dipoles
5.4 Light as a Stream of Particles: Photons
5.5 The Shape of Absorption and Emission Spectra
5.6 State Mixing: Breakdown of the Single Orbital Configuration and Pure Multiplicity Approximations
5.7 Experimental measurements of the Absorption and Emission of Light: Molecular Electronic Spectroscopy
5.8 Spin-Orbit Coupling and Spin-Forbidden Radiative Transitions
5.9 Experimental Examples of Spin-Forbidden Radiative Transitions: S0 -> T Absorption and Phosphorescence
5.10 Flash Spectroscopy
5.11 Excited State Structures and Dipole Moments
5.12 Radiative Transitions Involving more than One Molecule: Absorption Complexes and Exciplexes
5.13 Delayed Fluorescence and Phosphorescence
5.14 Emission from "Upper" Excited Singlets and Triplets; The Azulene Anomaly

6. Photophysical radiationless Transitions
6.1 Photophysical radiationless Transitions as a Form of Electronic Relaxation
6.2 A Classical Interpretation of Radiationless Electronic Transitions as Jumps between Surfaces
6.3 Wave Mechanical Interpretation of Radiationless Transitions between States
6.4 Formulation of a Parameterized Model of Radiationless Transitions
6.5 The Relationship of Rates and Efficiencies of Radiationless Transitions to Molecular Structure
6.6 Factors that Influence the Rate of Vibrational Relaxation
6.7 The Evaluation of Rate Constants for Radiationless Processes from Quantitative Emission Parameters
6.8 Internal Conversion (Sn -> S1, S1 -> S0)
6.9 Intersystem Crossing from S1 to T1
Intersystem Crossing (T1 -> S0)
6.10 Intersystem Crossing (T1 -> S0)
6.11 Perturbation of Spin-Forbidden Radiationless Transitions
6.12 The Relationship between Photophysical Radiationless Transitions and Photochemical Processes

7. Theoretical Organic Photochemistry
7.1 A Qualitative Theory of Organic Photoreactions
7.2 The Principle of Maximum Positive Orbital Overlap
7.3 Orbital Interactions
7.4 Orbital and State Correlation Diagrams
7.5 The Construction of Electron Orbital and State Coordination Diagrams for a Selected Reaction Coordinate
7.6 Typical State Correlation Diagrams for Concerted Photochemical Pericyclic Reactions
7.7 State Correlation Diagrams for Photoreactions Involving Diradical Intermediates
7.8 Typical State Correlation Diagrams for Non-Concerted Photoreactions: Reactions Involving Intermediates (Diradicals and Zwitterions)
7.9 State Correlation Diagrams for a-Cleavage of Ketones
7.10 A Standard Set of Primary Photoreactions for pi,pi* and n,pi* States
7.11 Conclusion: Energy Surfaces as Reaction Graphs

8. Mechanistic Organic Photochemistry
8.1 Mechanisms
8.2 Use of Kinetic Feasibility in Quantitative Mechanistic Analyses
8.3 The Use of Structural Criteria and the Role of Reactive Intermediates in Mechanistic Analysis
8.4 Rules for Proceeding from Rate Laws to Inferring Photochemical Reaction Mechanisms
8.5 Rules for Proceeding from Efficiency Laws to Inferring Photochemical Reaction Mechanisms
8.6 Experimental Methods for Determining Rate Constants of Photoreactions
8.7 Experimental Examples of the Measurements of Photochemical Rate Constants
8.8 Reactive Intermediates: Experimental Detection and Characterization
8.9 Experimental Tests for Reactive Intermediates
8.10 Experimental Tests for the Involvement of Radicals and Diradicals
8.11 Magnetic Resonance Methods for Detecting Radicals, Radical Pairs, and Diradicals
8.12 Chemically Induced Nuclear Polarization and the Experimental Detection of Radical Pairs
8.13 Chemical Spectroscopy: The Use of Photochemical Reactions to Measure Excited State Energetics and Dynamics
8.14 Some Archetype State-Energy Diagrams

9. Energy Transfer
9.1 An Energy Surface Description of Electronic Energy Transfer and Energy Degradation
9.2 The "Trivial" or Radiative Mechanism for Electronic Energy Transfer: The Spectral Overlap Integral
9.3 Theory of Radiationless Energy Transfer: A General Formulation
9.4 Visualization of Energy Transfer by Coulombic Interactions: A Transmitter-Antenna Mechanism
9.5 Energy Transfer by Electron Exchange: An Overlap or Collision Mechanism
9.6 The Role of Energetics in Energy Transfer Mechanisms
9.7 The Role of Molecular Diffusion in Energy Transfer Processes in Fluid Solution: "Diffusion Controlled" Quenching
9.8 Distance-Time Relationships for Diffusion
9.9 Energy Transfer in the Absence of Diffusion: The Perrin Formulation
9.10 Comparison of the Theoretical Distance Dependencies of Energy Transfer Rates and Efficiencies
9.11 Experimental Examples of Singlet-Singlet Energy Transfer
9.12 Triplet-Triplet Energy Transfer
9.13 Triplet-Singlet Energy Transfer in Fluid Solution
9.14 Singlet-Triplet Energy Transfer
9.15 Excitation Transfer between Conjugated Chromophores
9.16 "Multiphoton" Energy Transfer Processes; Triplet-Triplet Annihilation; Delayed Photoluminescence
9.17 Energy Transfer from Upper Excited States
9.18 Nonvertical Energy Transfer
9.19 Reversible Energy Transfer
9.20 Photosensitization and Quenching in Organic Photochemistry
9.21 Quenching by Molecular Oxygen
9.22 Energy Hopping or Energy Migration

10. Photoaddition and Photosubstitution Reactions
10.1 Classification of Photochemical Additions and Substitution Reactions
10.2 Photoreduction of Carbonyl Compounds and Ethylenes: Linear Addition Initiated by Hydrogen Abstraction Reactions
10.3 The Use of Radical Models for Hydrogen Abstraction from n,pi* and pi,pi* States
10.4 Theoretical Analysis of Hydrogen and Electron Abstraction Reactions of Ketones
10.5 Synthetic Applications of Photochemical Hydrogen Abstraction Reactions
10.6 Mechanistic Analysis of the Photoreduction of Ketones
10.7 Quantitative Analysis of the Efficiency of Photoreduction
10.8 Experimental Examples of the Competition between Hydrogen Abstraction and Electron Abstraction
10.9 Intramolecular Hydrogen Abstraction: The Type II Family of Reactions
10.10 Photochemical Hydrogen and Electron Abstraction of Carbonyl Derivatives and Unsaturated Nitrogen Compounds
10.11 Addition Reactions of Acyclic Ethylenes
10.12 Photochemical Aromatic Substitution

11. Cycloaddition Reactions
11.1 Classification of Cycloaddition Reactions
11.2 Photocycloadditions via Intermediates: Diradicals, Zwitterions, and Exciplexes
11.3 Photocycloaddition Reactions of Carbonyl Compounds
11.4 Photocycloadditions of Benzene
11.5 Photocycloaddition Reactions of Conjugated Enones
11.6 Photocycloadditions Involving Unsaturated Nitrogen Compounds and Thioketones

12. Isomerizations and Rearrangements
12.1 Classification of Photochemical Rearrangements
12.2 Cis-trans Isomerization of Unsaturated Compounds
12.3 Skeletal and Positional Photoisomerizations: Sigmatropic Rearrangements
12.4 Electrocyclic Reactions
12.5 Intramolecular Cycloadditions of Conjugated Hydrocarbons
12.6 Electrocyclic Reactions and Intramolecular Cycloadditions of Heteroatomic Conjugated Systems
12.7 Sigmatropic Isomerizations of b,g-Unsaturated Enones

13. Photofragmentation Reactions
13.1 Photofragmentations and Photoeliminations
13.2 Homolytic a-Cleavage of Ketones: An Alkoxy Radical Model
13.3 Sigmatropic Rearrangements of b,g-Unsaturated Ketones Initiated by a-Cleavage
13.4 Photoelimination Reactions of Azo Compounds
13.5 Photoelimination of Nitrogen from Diazocompounds, Azides, and Related Compounds
13.6 Photochemical Cleavage of Small Rings
13.7 Miscellaneous a-Cleavage Reactions of Peroxides, Halides, and Nitrites; The Barton Reaction

14. Singlet Oxygen and Chemiluminescent Organic Reactions
14.1 A Conceptual Link between Photoreactions and Chemiluminescent Organic Reactions
14.2 Molecular Oxygen: Ground State and Excited Singlet States
14.3 Chemiluminescence of 1,2-Dioxetanes and Endoperoxides
14.4 Applications of Chemiexcitation to Photochemical Problems
14.5 Adiabatic Photoreactions: Examples of Chemiluminescent Photoreactions
14.6 "Red Light to Blue Light" Experiments and "Uphill" Photosensitization
14.7 Interplay of Organic Photochemistry and Chemiluminescent Organic Reactions

15. Spin Theory (in PDFs)
15.1 Spin Chapter Introduction
15.2 Spin Chemistry and the Vector Model
15.3 Angular Momentum States
15.4 Bohr Model and Angular Momentum and Magnetic Motion
15.5 Magnetic Energy Levels
15.6 Classical Precession of the Angular Momentum Vector
15.7 Examples of Magnetic Energy Diagrams
15.8 Magnetic Interactions and Magnetic Couplings
15.9 Magnetic Levels Spin transitions Between Spin States
15.10 Magnetic Resonance Spectroscopy. The Transition Between Manetic Dipoles in a Magnetic Field.
15.11 Magnetic Resonance and Spin Chemistry. A Paradigm and a Case History
15.12 ESR of Molecular Triplet
15.13 Primary Photochemical Reactions. Spinomers
15.14 Dynamic Radical Pair in Zero Field
15.15 The Dynamic Radical Pair at High Field
15.16 Reactions of the Radical Pairs
15.17 Magnetic Effects on Chemical Reactions. External Magnetic Field Effect on the Reactivity of Radical Pairs
15.18 The magnetic Isotope Effect on Radical pair Reactions

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