Influence of synthesis temperature on the active performance of doped‑carbon dots embedded in polyvinyl alcohol and their potential for active food packaging.

This study explores how synthesis temperature influences the properties and functionalities of sulfur‑nitrogen doped carbon dots (S,N-doped CDs) derived from citric acid and cysteine. The focus lies on their potential in bionanocomposite films for active packaging. Bionanocomposite films were prepared by incorporating CDs synthesized at different temperatures (160, 180, and 200 °C) into a polyvinyl alcohol (PVOH) matrix.