- 1.1: Electronic transitions and luminescence
- Luminescence is the emission of light due to transitions of electrons from molecular orbitals of higher energy to those of lower energy, usually the ground state or the lowest unoccupied molecular orbitals. Such transitions are referred to as relaxations.
- 1.2: Chemiluminescence Spectroscopy
- The importance of chemiluminescence spectroscopy lies more in elucidating the mechanisms of chemiluminescence reactions rather than in analytical applications. In particular, spectroscopic investigations have been found useful for the identification of the emitter species in particular chemiluminescence reactions.
Thumbnail: Chemiluminescence after a reaction of hydrogen peroxide and luminol. This is an image from video youtu.be/8_82cNtZSQE. (CC BY-SA 4.0; Tavo Romann).