Mini ReviewPublished 14 July 2026Phosphorus fluoride exchange (PFEx): a new frontier in bioconjugation, enzyme inhibition, proximity-induced target-binding and fluorescence probesVaibhav Gupta · Nibedita Roy · Vaishnavi Newaskar · Sankar K. GuchhaitFrontiers in Chemical Biologydoi 10.3389/fchbi.2026.1879339