Used primarily as a monomer in the synthesis of specialty polymers, 3,4-difluorostyrene contributes to the development of fluorinated polystyrene derivatives with enhanced thermal stability and chemical resistance. These polymers are valuable in high-performance coatings, electronic materials, and membranes for chemical processing due to their low dielectric constants and improved solubility. The compound's fluorinated structure also makes it useful in pharmaceutical research as an intermediate for bioactive molecules, where the fluorine atoms can influence metabolic stability and binding affinity. Additionally, it serves in materials science for creating liquid crystals and optoelectronic devices, leveraging the electronic effects of fluorine substitution.