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. 2022 Jan 15;76(5):2759–2776. doi: 10.1007/s11696-022-02067-6

Table 6.

UV–Vis absorption data of Parthenolide molecule

Absorption
Theoretical
Transition λ (nm) E (eV) (f)
S0 → S1 285.60 4.3412 0.0047
S0 → S2 280.64 4.4178 0.0035
S0 → S3 232.41 5.3347 0.0024