A highly sensitive and selective fluorescent “on–off–on” strategy is established for the
synchronous detection of Cu2+ and glutathione in aqueous solution. Red carbon dots (R …

Abstract Copper ion (Cu 2+) and l-cysteine (l-Cys) detection is critically important since an
abnormal level of Cu 2+ or l-Cys is an indicator for many diseases. In this paper, we …

Carbon dots were synthesized by a simple and green strategy for selective and sensitive
Cu2+ ion detection using both down and upconversion fluorescence. These fluorescent …

Fluorescent carbon dots (CDs) are widely applied for the detection of heavy metal ions due
to their nontoxicity, high sensitivity and stability. In this work, CDs were synthesized by a …

A one‐step solvothermal method for the preparation of carbon dots with red fluorescence (R‐
CDs) was put forward, in which sodium citrate and formamide were chosen as precursors …

Dual‐emissive fluorescent glutathione carbon dots (GSH‐CDs) have been synthesized by a
green hydrothermal method and used as a colorimetric fluorescent probe for the multi …

Yellow-emissive carbon dots (Y-CDs) were prepared by a solvothermal method using
anhydrous citric acid and 2, 3-phenazinediamine as the starting materials. The Y-CDs …

Red dual-emissive carbon dots (CDs) were prepared by a novel and facile solvent-free
carbonization method using O-phenylenediamine (OPD) as precursor and Al (NO 3) 3· 9H 2 …

Herein, red-emitting nitrogen-doped carbon dots (N-CDs) were prepared using p-
phenylenediamine and polyethylene glycol 20,000 as precursors. The N-CDs are spherical …

The fluorescent carbon dots (CDs) with high fluorescent quantum yield (φ f= 62%) and down-
and up-conversion fluorescence properties were synthesized by one-pot hydrothermal …