The present invention relates to a novel sulfone hybrid precursor, to the synthesis method thereof, and to the uses thereof, particularly for preparing proton-exchanging electrolyte membranes as the functional hybrid charge in a host structure; for the manufacture of functional hybrid nanoparticles by sol-gel polymerization; for the use as a fluidifying agent; for the production of surface coverings through chemical grafting by means of sol-gel polymerization; for the use as a hygroscopic agent; and for the use as a bonding or structuring agent.