Abstract
The effect of storage time and solvent on 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical stability was studied using electron spin resonance. Tetrahydrofuran affected the g-factor due to a rearrangement within the DPPH structure that changed the radical centre. There was also a change in the spins concentration when modifying the solvent and storage times. The more than 96 % decrease in spins after 12 weeks, consistent with a change in the pH and color, was attributed to the electron- and hydrogen-donor capabilities of the solvents, leading to a shift among the different DPPH ionic states. Tetralin instantly interacted with the DPPH capping many radicals.
| Original language | English |
|---|---|
| Article number | 100932 |
| Journal | Case Studies in Chemical and Environmental Engineering |
| Volume | 10 |
| DOIs | |
| Publication status | Published - Dec 2024 |
Keywords
- 2,2-Diphenyl-1-picrylhydrazyl
- Electron spin resonance
- Free radical
- Solvent effect
- Storage effect
ASJC Scopus subject areas
- Environmental Engineering
- Environmental Chemistry
- General Chemical Engineering
- Environmental Science (miscellaneous)
- Engineering (miscellaneous)