The results suggest a promising future for the development of a new sensing phase for moisture determination in lubricant base oil.

The proposed system matches and even improves other methodologies for water determination in organic solvents it has a low detection limit and a fast response time (almost instantaneous) and requires neither expensive material nor trained personnel. The developed nanochemosensor was used to determine water in toluene with a detection limit of 8.5 × 10 −4 M and a quantification limit of 2.4 × 10 −3 M. These two features allowed studying the application of doped carbon dots as moisture nanochemosensor, demonstrating high stability over time of both the photoluminescent signal intensity and the stability of the dispersions. This surface functionalization improved the dispersibility of the nanoparticles in non-polar media, as well as modified the accessibility of water molecules to the europium ions. A fast and efficient method was developed for obtaining europium(III)-doped surface-modified carbon dots with a hydrophobic coating.

Comin out strong future instrumental