An electron-deficient aromatic thiol in which two meta-fluorine atoms withdraw electron density and raise the acidity of the –SH group (pKa ≈ 5.1), while simultaneously increasing oxidative stability. The symmetric 3,5-difluoro pattern delivers unique reactivity and surface properties, enabling:
High-performance thiol–ene optical resins: photopolymerisation with triallyl isocyanurate yields colourless high-index films (n 1.60, Tg 125 °C, YI <1 after 500 h Q-UVB) for 5G lens substrates and OLED barrier layers.
Silver-antimicrobial self-assembled monolayers: the densely packed fluorinated surface (water contact angle 98°) sustains >99 % bacterial kill after 24 h and suppresses Ag tarnishing in saline atmospheres.
Palladium-selective scavenger: the soft sulfur and electron-poor ring form a stable Pd(II) complex (log K = 18.7), allowing recovery of Pd from spent cross-coupling liquors to <0.1 ppm.
Electrophilic thiolation reagent: the pre-activated ArS⁻ species transfers cleanly to electron-rich arenes under oxidative conditions, furnishing unsymmetrical diaryl sulfides for OLED host materials.
Metal-free benzothiazole synthesis: one-pot oxidative cyclisation with aldehydes affords 2-substituted benzothiazoles in 90–95 % yield under ambient conditions, streamlining pharmaceutical building-block synthesis.
Store under nitrogen at 2–8 °C, protected from light and oxidants to avoid disulfide formation .
