High-performance supercapacitor and antifoulingbiosensor based on conducting polyaniline-hyaluronicacid hydrogels

Key Words:NANOWIRE ARRAYS; PRESSURE SENSOR; NANOCOMPOSITES; STRATEGIES; BIOSENSORS

Abstract:We report a polyaniline-hyaluronic acid (PANI-HA) hydrogel that combines rigid conducting polymer with flexible HA. The supramolecular assembly of PANI and HA via boronic acid bonds yields PANI-HA hydrogel with unique microstructure, electrical conductivity and hydrophilicity and exhibits excellent super capacitor performance and electrochemical sensing for immunoglobulin G(IgG). The PANI-HA hydrogel electrode shows high specific capacitance(369 F g(-1), with 0.5 A g(-1) current density) and good cycling stability (85�pacity retention after 1000 galvanostatic charge-discharge cycles). In addition, the PANI-HA hydrogel-based electrode can also be used as an electrochemical biosensor for IgG detection, and the presence of highly hydrophilic HA sup-ports low-fouling target analysis. The modified electrode exhibits good sensitivity, wide detection range (0.1 ng mL(-1)-10lgmL(-1)), and a low detection limit (0.043 ng mL(-1)) for IgG detection. We demonstrate a strategy to fabricate supra molecular hydrogel-modified electrodes and explore their potential applications in supercapacitors and biosensors

Volume:58

Issue:3

Translation or Not:no