Spectroscopic Identification of Neurotoxin Tetramethylenedisulfotetramine (TETS) Captured by Supramolecular Receptor β-Cyclodextrin Immobilized on Nanostructured Gold Surfaces
Figure 4
(a) ATR-FTIR spectra of mono-thiol-β-CD powder (i), as-synthesized TETS/HEXS powder (ii), TETS/HEXS inclusion in mono-thiol-β-CD decorated SERS-active area (iii), TETS/HEXS inclusion in mono-thiol-β-CD decorated flat Au Klarite surface (iv), mono-thiol-β-CD decorated Au nanoparticles anchored on a flat Au surface (v), and surface in (v) after incubated in TETS/HEXS solution (vi). The spectra are normalized for comparison. (b) Sum of the individual calculated IR vibrational spectra of HEXS and TETS. ( stretching mode; bending mode; subscript symmetric vibration; and subscript antisymmetric vibration).
