Spectroscopic Identification of Neurotoxin Tetramethylenedisulfotetramine (TETS) Captured by Supramolecular Receptor β-Cyclodextrin Immobilized on Nanostructured Gold Surfaces
Figure 2
Calculated differential Raman cross-section (cm2/sr) compared with that of R6G from the literature (at 532 nm excitation (resonant) [32] and at 633 nm laser excitation (preresonant) [33]) and those of HEXS and TETS from our work. The total cross-section values, σ (cm2), of R6G at 532 nm from [32] were transformed into differential cross-section, σ/Ω (cm2/sr), by the following relationship [29], σ = ([(8π)/3) (1 + 2ρ)]/(1 + ρ)) (σ/Ω), where ρ is the depolarization ratio of R6G taken as 1/3 [51].
