Electroactive composite film of Ce3+/poly dopamine/Prussian blue as the signal source and anti-fouling matrix for label-free detection of microRNA

Redox-Induced Multisignal Sensing Based on Fluorescent Polydopamine Nanoparticles and MnO2 Nanozyme for the Detection and Differentiation of Reducing Substances

“…17 By facilely polymerizing dopamine into fluorescent polydopamine (FPDA) nanoparticles through various interactions, including covalent bonds, hydrogen bonds, and π−π interactions, 18 FPDA NPs have emerged sought-after polymer nanoprobes in biosensing and bioimaging. 19,20 The fusion of FPDA NPs with nanozymes enables the creation of multisignal nanoplatforms, can be constructed, thereby broadening their potential utility across diverse fields. In this study, the catalytic and oxidative properties of Upon exposure to reducing agents, MnO 2 underwent a transformation into Mn 2+ , leading to the recovery of the fluorescence of FPDA and a reduction in the fluorescence of DAP alongside changes in the UV peak of DAP.…”

“…Concurrently, fluorescent polymer nanoparticles, known for their robust stability, low toxicity, and advantageous surface characteristics, have paved the way for innovative applications . By facilely polymerizing dopamine into fluorescent polydopamine (FPDA) nanoparticles through various interactions, including covalent bonds, hydrogen bonds, and π–π interactions, FPDA NPs have emerged sought-after polymer nanoprobes in biosensing and bioimaging. , The fusion of FPDA NPs with nanozymes enables the creation of multisignal nanoplatforms, can be constructed, thereby broadening their potential utility across diverse fields.…”