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Abstract | Cited by

A novel probe for bacteria was simply synthesized through the solvent-induced co-assembly of bacitracin (AMP) and thymolphthalein (TP) without complicated modification. Combining with aptamer–Fe3O4, AMP/TP nanoparticles were used for the colorimetric detection of Escherichia coli with good sensitivity through the NaOH-triggered blue color and a smartphone-based App.

Graphical abstract: pH-Triggered visual detection of Escherichia coli based on the co-assembly of bacitracin and thymolphthalein

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