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Poly(p‐aminobenzene sulfonic acid) (pABSA) was electrodeposited onto the surface of a glassy carbon electrode (GCE), which was then used for the preconcentration of l‐tryptophan (l‐Trp) due to the electrostatic and π–π interactions between pABSA and l‐Trp. Polypyrrole (PPy) was electrodeposited onto the surface of the l‐Trp enriched pABSA, and then the l‐Trp templates were removed, resulting in molecularly...
A three‐dimensional molecularly imprinted overoxidized polypyrrole/MnO2/carbon felt (MIOPPy/MnO2/CF) composites were fabricated, which results in increased active area of the surface of the molecularly imprinted polymers film and greatly improved electrochemical chiral recognition effect for tryptophan isomers. The composites were characterized by field emission scanning electron microscope, transmission...
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