User:Benjah-bmm27/degree/2/AJOE

Introduction to Photochemistry, AJOE

• Photochemistry

Atomic spectroscopy

• Atomic spectroscopy
  • Emission spectroscopy
  • Absorption spectroscopy

Atomic quantum mechanics

• Atomic physics, quantum chemistry
• Spin multiplicity
• Quantum number
• Selection rule
  • Laporte rule
• Angular momentum coupling: Russell-Saunders (LS) coupling
  • Clebsch–Gordan coefficients
• Spectroscopic notation (s, p, d, f, etc.)
• Term symbol
• Hund's rules
  • Hund's rule of maximum multiplicity

Photochemical diagrams

• Grotrian diagram
• Jablonski diagram

Luminescence

• Fluorescence
• Phosphorescence
• Intersystem crossing
• Internal conversion
• Quenching (fluorescence)
• Quantum yields
• Stern-Volmer relationship
• Chromophore

Lasers

• Laser action
  • Absorption
  • Population inversion: more molecules in an excited state than in lower energy states.
  • Stimulated emission
• Dye lasers are tunable lasers
  • Rhodamine 6G is a common dye used in dye lasers
  • Optical cavities and resonators make tuning possible. Common tuning cavities include:
    • Prisms, often multiple prisms
    • Diffraction gratings
    • Fabry–Pérot interferometers (also known as an etalons)

Photochemical reactions

• Photochemical reaction