Theoretical and experimental study of dynamic triplet-triplet annihilation in an organic one-dimensional motion system
Abstract
Pair-density-matrix theory has been adapted to the triplet-pair exciton annihilation under microwave excitation by including the dimensionality of exciton motion and applied to the fluorescence detected magnetic-resonance spectrum observed for a one-dimensional molecular crystal. This theory gives a satisfactory fit of the observed effects on a 1,4 dibromonaphtalene crystal and leads to the determination of the singlet annihilation rate constant λ and the triplet exciton pair lifetime β-1 .
- Publication:
-
Physical Review B
- Pub Date:
- February 2005
- DOI:
- 10.1103/PhysRevB.71.075205
- Bibcode:
- 2005PhRvB..71g5205B
- Keywords:
-
- 71.35.-y;
- 32.30.Dx;
- 32.50.+d;
- Excitons and related phenomena;
- Magnetic resonance spectra;
- Fluorescence phosphorescence