Used in the synthesis of functional dyes and electroactive materials due to its redox-active disulfide bond. Serves as a crosslinking agent in polymer chemistry, particularly in conductive polymers and smart materials. Employed in surface modification of gold nanoparticles and electrodes for biosensors, leveraging its ability to form self-assembled monolayers via thiol-disulfide exchange. Also utilized in the development of stimuli-responsive drug delivery systems where disulfide cleavage triggers release in reductive environments like intracellular spaces.