Question

Internal conversion and external conversion are likely alternative pathways for fluorescence. What are these conversion processes and why might they be favored over fluorescence?

Answer 1

Internal conversion is defined as an intermolecular process in which molecules goes through a lower possible energy state without the emission of any radiation, the benefit of internal conversion is in the case when the two energy levels are very close to each other

External conversion is defined as the process in which deactivation of the electron in an excited energy state will lead to energy transfer between the excited state and solute/solvent of the process

In flourescence, the external conversion is favored over internal conversio