A porous thiolated polymer nanocomposite for sensitive and selective amperometric immunoassay of phyto-hormone (with indole-3-acetic acid (IAA) as the model) was reported, with a detection limit down to 0.13 pg/mL for IAA. Briefly, porous thiolated polymer nanocomposite was prepared via electro-assisted thiol-ene reaction of 2,5-dimercapto-1,3,4-thiadiazole (DMcT) with oxidized polypyrrole (PPy) which was electrosynthesized on a porous graphene (PG) modified glassy carbon electrode, yielding thiolated PPy (TPPy)-PG, then gold nanoparticles (AuNPs) was deposited on the TPPy-PG by electrochemica...
