Nitrogen and sulfur co-doped carbon dots: A facile and green fluorescence probe for free chlorine

Synthesis of short-chain passivated carbon quantum dots as the light emitting layer towards electroluminescence

“…24 Furthermore, the QY is expected to be further improved by optimizing synthesis parameters 22,46 and co-doping with nitrogen and sulfur. 39,47 The uorescence decay lifetime of S-CQDs was estimated under the excitation of 375 nm and the emission of 455 nm by using multidimensional time-correlated single photon counting (TCSPC) method. As depicted in Fig.…”

A novel chemiluminescence sensor for the determination of indomethacin based on sulfur and nitrogen co‐doped carbon quantum dot–KMnO4 reaction

“…S,N‐CQDs were synthesized by a hydrothermal method as described in the literature with some modifications . Briefly, 2.0 g of citric acid and 1.0 g of l‐ cysteine were mixed and powdered.…”

“…One way to control the properties of carbon quantum dots (CQDs) is by doping them with heteroatoms such as B, N, P and S . Sulfur and nitrogen co‐doped CQDs (S,N‐CQDs) have incredibly high quantum yields, which have attracted attention in various fields such as bioimaging and sensing . However, little research about the CL properties of S,N‐CQDs has been reported.…”

Effect of thiophene S on the enhanced ORR electrocatalytic performance of sulfur-doped graphene quantum dot/reduced graphene oxide nanocomposites

“…2b shows the HRTEM image of S-GQDs-0.25, and we can obtain the plane lattice spacing of 0.209 nm, which is similar to the in-plane lattice spacing of graphene. [25][26][27] Fig. 2c shows that granular S-GQDs-0.25 are uniformly distributed on r-GO aer hydrothermal treatment.…”