An Insight into the Reactivity of the Electrogenerated Radical Cation of Caffeine
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Cyclic Voltammetry
2.3. Controlled Potential Electrolysis
2.4. HPLC-PDA-ESI-MS/MS Analysis
3. Results
3.1. Anodic oxidation of CAF
3.2. HPLC-PDA-ESI-MS/MS Analysis of Oxidation Products
4. Discussion
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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ACN | ACN/1eq H2O | |
---|---|---|
Eap (V) a | +1.87 | +1.92 |
I (A cm−2) b | 6.64 × 10−4 | 1.4 × 10−3 |
I2F/I0c | 42% | 14% |
Compound | RT (min) | M (Da) caltd | [M+H]+ caltd/expt | [M-H]− cald/expt | λ (nm) | Structure | Data in SM | 2 F/1 F |
---|---|---|---|---|---|---|---|---|
1 | 2.75 | 250.09 | 251.10/251.22 | - | 294 a | Figure S3 | +57% | |
2 | 3.35 | 188.09 | [M+Na]+ 211.08/211.06 | 187.08/187.09 | 203; 234 | Figure S4 | +71% | |
3 | 5.39 | 194.08 | 195.09/195.04 | - | 205; 272 | −70% | ||
4 | 6.94 | 213.07 | - | 212.07/212.03 | 220–240 b | Figure S5 | +97% | |
5 | 8.37 | 228.09 | 229.09/229.10 | - | 209; 276 | Figure S6 | −28% |
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Feroci, M.; Bortolami, M.; Chiarotto, I.; Di Matteo, P.; Mattiello, L.; Pandolfi, F.; Rocco, D.; Petrucci, R. An Insight into the Reactivity of the Electrogenerated Radical Cation of Caffeine. Electrochem 2020, 1, 44-55. https://doi.org/10.3390/electrochem1010005
Feroci M, Bortolami M, Chiarotto I, Di Matteo P, Mattiello L, Pandolfi F, Rocco D, Petrucci R. An Insight into the Reactivity of the Electrogenerated Radical Cation of Caffeine. Electrochem. 2020; 1(1):44-55. https://doi.org/10.3390/electrochem1010005
Chicago/Turabian StyleFeroci, Marta, Martina Bortolami, Isabella Chiarotto, Paola Di Matteo, Leonardo Mattiello, Fabiana Pandolfi, Daniele Rocco, and Rita Petrucci. 2020. "An Insight into the Reactivity of the Electrogenerated Radical Cation of Caffeine" Electrochem 1, no. 1: 44-55. https://doi.org/10.3390/electrochem1010005