© 2002 J.Paul Robinson, Purdue University
Fluorescence
ENERGY
S
0
S
1
S
2
T
2
T
1
ABS
FL
I.C.
ABS - Absorbance
S 0.1.2 - Singlet Electronic Energy Levels
FL - Fluorescence
T 1,2
- Corresponding Triplet States
I.C.- Nonradiative Internal Conversion
IsC
- Intersystem Crossing
PH
- Phosphorescence
IsC
IsC
PH
[Vibrational sublevels]
Jablonski Diagram
Vibrational energy levels
Rotational energy levels
Electronic energy levels
Singlet States
Triplet States
3
rd
Ed. Shapiro p 87