| ABTS | 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid |
| DPPH | 2,2-diphenyl-1-picrylhydrazyl radical |
| BDE | bond dissociation energy |
| CUPRAC | Cupric ion reducing antioxidant capacity |
| DFT | density functional theory |
| ETE | electron transfer enthalpy |
| FRAP | ferric reducing ability of plasma |
| HAT | hydrogen atom transfer |
| IP | ionization potential |
| MA | Mandelic acid |
| PA | proton affinity |
| PCET | proton-coupled electron transfer |
| SAMMA | mandelic acid condensation polymer |
| SPLET | sequential proton loss electron transfer |
| 3OH-MA | 3-hydroxymandelic acid |
| 3,4-diOH-MA | 3,4-dihydroxymandelic acid |
| 4OH-3OCH3-MA | 4-hydroxy-3-methoxymandelic acid |
| PDE | proton dissociation enthalpy |
| HOMA | harmonic oscillator model of aromaticity |
| HOMO | highest Occupied Molecular Orbital |
| LUMO | lowest Occupied Molecular Orbital |