*2.2. Synthesis of Rf-OH*

p-Hydroxybenzyl alcohol (6.20 g) and K2CO3 (6.91 g) were dissolved in 60 mL THF. HFPT (33.75 g) was added dropwise into a four-mouth flask under nitrogen atmosphere, followed by stirring and reflux for 4 h at 60 ◦C. Afterwards the mixture was slowly cooled to room temperature and THF was removed with rotary evaporation to obtain a yellow liquid (20.78 g, 70% yield).
