Experimental study demonstrates a water-resistant bio-based bamboo paper sensor for detecting metal ions and antibiotics, indicating a sustainable approach to fluorescent sensing.
Key Points
To fabricate a fully bio-based, reprocessable, and water-resistant bamboo paper fluorescent sensor without relying on complex conjugated polymers.
Synthesized polyhydroxyurethane (PHU) prepolymers containing carbamate functional groups and long aliphatic hydrophobic segments.
Applied the PHU prepolymers onto bamboo paper (Bp) and thermally cured the composite to create interfacial covalent bonds via dynamic-exchange reactions.
Characterized mechanical strength, surface hydrophobicity, fluorescence intensity, and sensing efficacy for metal ions and antibiotic targets.
Achieved a tensile strength of 4.3 MPa and increased the water contact angle from 0° to 93°, imparting high water resistance.
Yielded a 2.3-fold increase in fluorescence intensity relative to untreated bamboo paper via carbamate-hydroxyl molecular interactions.
Demonstrated effective fluorescent detection of Fe3+ ions, erythromycin, and tobramycin.