One-step microwave synthesis of red-emissive carbon dots for cell imaging in extreme acidity and light emitting diodes.

ABSTRACT: Red emissive carbon dots (R-CDs) have received great attention in biological fields due to their deep tissue penetrability, great bioimaging capability, low interference from auto-fluorescence, and potential for optoelectronic applications. Herein, excitation-independent, highly acid-sensitive R-CDs were successfully obtained via one-step microwave treatment of o-phenylenediamine (o-PD) and phosphoric acid and carefully purified by column chromatography. The relationship between the fluorescence emission and surface groups of the R-CDs was studied in detail using XPS, NMR, and fluorescence spectroscopy, and the different mechanisms of action of the R-CDs and acid in H₂O and ethanol were determined. The excellent anti-interference ability and biocompatibility

SUBMITTER: Chang X 

PROVIDER: S-EPMC9524442 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature