Table 4 Infrared spectroscopy data for allicin and its complexes in the water phase.
Compound | Peak No. | Frequency (cm⁻¹) | Relative intensity | Vibration mode | Functional group | Remarks |
|---|---|---|---|---|---|---|
Allicin | 1 | 1065.53 | Strong | Stretching (S = O) | Sulfoxide | Characteristic peak of the sulfoxide bond in allicin. |
2 | 470.02 | Medium | Stretching (S-S) | Disulfide | The presence of disulfide bonds. | |
3 | 22.01 | Weak | Bending (S-S) | Disulfide | Weak bending vibration of the disulfide bond. | |
Allicin/C₂₄ | 1 | 772.48 | Medium | Stretching (S = O) | Sulfoxide | Interaction with C24 affects the S = O vibration. |
2 | 505.51 | Medium | Stretching (S-S) | Disulfide | Interaction with C24 modifies S-S vibration. | |
3 | 935.97 | Strong | Stretching (O-C) | Oxygen-Carbon | Interaction between oxygen in allicin and carbon in C₂₄ nanocage. | |
Allicin/B₁₂N₁₂ | 1 | 907.25 | Strong | Stretching (S = O) | Sulfoxide | Similar to allicin, indicating an S = O bond. |
2 | 491.48 | Medium | Stretching (S-S) | Disulfide | Stretching vibrations indicate interactions with the nanocage. | |
3 | 917.77 | Strong | Stretching (O-B) | Oxygen-Boron | Interaction between oxygen in allicin and boron in B₁₂N₁₂ nanocage. | |
Allicin/Al₁₂N₁₂ | 1 | 935.02 | Strong | Stretching (S = O) | Sulfoxide | Similar to allicin, indicating an S = O bond. |
2 | 488.90 | Medium | Stretching (S-S) | Disulfide | Indicates bending vibrations in the modified environment. | |
3 | 586.82 | Strong | Stretching (O-Al) | Oxygen-Aluminum | Interaction between oxygen in allicin and aluminum in Al₁₂N₁₂ nanocage. |
