fig6

From: Advancements in porous organic frameworks based electrochemical sensors for organophosphorus pesticides detection

Figure 6. (A) The detection mechanism of dual-modal sensors (Reproduced with permission^[122]. Copyright 2023, American Chemical Society); (B) the preparation of PCN-224(Zn) Reproduced with permission^[126]. Copyright 2023, Elsevier); (C) PtAu NPs-COFs (Reproduced with permission^[127]. Copyright 2025, Elsevier) MIP sensors. TAPB: 1,3,5-tris(4-aminophenyl)benzene; DMTP: 2,5-dimethoxyterephthalic acid; COF: covalent organic framework; MB: methylene blue; MES: 4-morpholineethanesulfonic acid; OP: organophosphorus pesticide; TMB: tetramethylbenzidine; ITO: indium tin oxide; AChE: acetylcholinesterase; PEC: photoelectrochemical; PCN: polycentric; MIP: molecularly imprinted polymer; NP: nanoparticle; DA: dopamine; CPF: chlorpyrifo; PCN-224: porous coordination network-224.