See the following reference for a review on the uses of this stable radical for radical trifluoromethylation, trifluoromethylation/fluorination and polymer initiation.
"Perfluoro-3-ethyl-2,4-dimethyl-3-pentyl persistent radical: A new reagent for direct, metal-free radical trifluoromethylation and polymer initiation"
J. Fluorine Chemistry (2019) 227, 109370.