Charge-regulated and enthalpy-driven supramolecular assembly of boron-doped carbon dots enables robust ferric ion (Fe3+) sensing in food matrices.
BACKGROUND The sensitive quantification of trace metal ions, particularly Fe3+, in complex environmental and food matrices remains a formidable challenge due to severe matrix-induced interference. While fluorescent carbon dots (CDs) are widely employed, their quenching mechanisms are frequently oversimplified as isolat...