Figure 2. Photophysical properties of fluorophores.
(A) Simplified Jablonski diagram representing excitation (Ex), fluorescence (Fl) emission, internal conversion (IC), vibrational relaxation (VR), non-radiative decay (NR), intersystem crossing (ISC), phosphorescence (Ph) and photobleaching (PB), and the respective timescales at which these processes occur. S0, singlet ground state; S1, singlet excited state; T1, triplet state. (B) A simulated intensity trajectory of a single molecule with two blinking events (orange arrow) and a single photobleaching step (dotted grey arrow).