title: Self-powered sensing platform equipped with Prussian blue electrochromic display driven by photoelectrochemical cell.
abstract: By incorporating the Prussian Blue (PB) electrochromic display as cathode, a solar-driven photoelectrochemical (PEC) cell was constructed through combining sandwich-structured graphite-like carbon nitride (g-C3N4)-Au-branched-titanium dioxide (B-TiO2) nanorods as photoanode for self-powered hydrogen peroxide (H2O2) sensing, which exhibits both direct photoelectrochemical and electrochromic response. The gold nanoparticles (Au NPs) sandwiched between the B-TiO2nanorods and the g-C3N4layer served as electron relay as well as plasmonic photosensitizer to enhance the solar-to-chemical energy conversion efficiency. Owing to the effective disproportionation of H2O2and specific recognition of mannose on cell surface, concanavalin-A conjugated porous AuPd alloy nanoparticles were introduced as the catalytically active nanolabels promoting generation of hydroxyl radicals (·OH). Based on the cleavage of DNA with the participation of ·OH radicals generated by the decomposition of H2O2under the catalysis of AuPd alloy result in the disassembly of cancer cells to achieve further signal enhancement. The multiple-signal-output sensing response not only provides a promising strategy for different analytical purposes based on novel stimuli-responsive materials, but also enhances the reliability in the analyte detection.
authors.affiliation: School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China.
authors.forename: Yanhu
authors.initials: Y
authors.lastname: Wang
authors.affiliation: School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China.
authors.forename: Chaomin
authors.initials: C
authors.lastname: Gao
authors.affiliation: School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China.
authors.forename: Shenguang
authors.initials: S
authors.lastname: Ge
authors.affiliation: Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, PR China.
authors.forename: Lina
authors.initials: L
authors.lastname: Zhang
authors.affiliation: School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China.
authors.forename: Jinghua
authors.initials: J
authors.lastname: Yu
authors.affiliation: School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China. Electronic address: chm_yanm@126.com.
authors.forename: Mei
authors.initials: M
authors.lastname: Yan
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation*; D045744:Cell Line, Tumor; D003124:Colorimetry / Q000295:instrumentation; D004396:Coloring Agents / Q000737:chemistry*; D055664:Electrochemical Techniques / Q000295:instrumentation; D004566:Electrodes; D005295:Ferrocyanides / Q000737:chemistry*; D006046:Gold / Q000737:chemistry; D006108:Graphite / Q000737:chemistry*; D006801:Humans; D006861:Hydrogen Peroxide / Q000032:analysis*; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure; D009369:Neoplasms / Q000175:diagnosis; D014025:Titanium / Q000737:chemistry*
chemical_list: D004396:Coloring Agents; D005295:Ferrocyanides; C009495:titanium dioxide; D006046:Gold; D006108:Graphite; D006861:Hydrogen Peroxide; D014025:Titanium; C000170:ferric ferrocyanide
keywords: Electrochromic; Multiple-signal-output; Photoelectrochemical cell; Prussian blue; Self-powered; g-C(3)N(4)-Au-B-TiO(2) nanorods