“…It is known that o-benzoquinone participates in polymerization reactions, including chemical oxidative polymerization [ 29 ], electrochemical oxidative polymerization [ 30 ], and bipolar electropolymerization [ 27 ], to be used in a variety of biomedical applications including targeted drug delivery to cancer cells [ 31 ], catechol-modified polymers with antimicrobial properties [ 32 ], and structural adhesives for tissue and bone [ 33 ]. Catechol molecules can play an additional role as charge-transfer mediators [ 34 ]. The use of catecholate dopants for polypyrrole facilitated charge transfer, reduced electropolymerization potential, and allowed the fabrication of adherent polypyrrole films on non-noble substrates [ 35 , 36 , 37 ].…”