Abstract
Effective individual wound management, particularly in cases of prolonged healing and increased infection vulnerability, has prompted the development of wound theranostics, combining real-time diagnostic assessment and on-demand treatment. Here, we present a multifunctional conducting polymer-based smart theranostic bandage that integrates pH sensing, pH-compensated uric acid (UA) biosensing, and on-demand antibiotic release using different conducting polymers, each leveraging their advantageous intrinsic properties. Specifically, the polyaniline-based pH sensor operates reversibly across a pH range of 4–10, while the functionalized poly(3,4-ethylenedioxythiophene)-based UA biosensor exhibits a linear response up to 0.9 mM UA. Simultaneous detection of pH and UA allows accurate UA determination via pH compensation. Upon detecting abnormal pH/UA levels, the polypyrrole-based drug carrier releases ciprofloxacin via 0.6 V electrical stimulation, successfully inhibiting bacterial growth in vitro. The array is assembled as a 3D patch, connected to a flexible printed circuit board, and embedded in a wound bandage, offering potential for remote wound monitoring, targeted treatment, and wireless wound management.
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