Fig. 3: COlor Display by Exploiting Host–guest Dynamics (CODE-HD) construction and pseudo-color assignment.
From: Versatile non-luminescent color palette based on guest exchange dynamics in paramagnetic cavitands

a z-Spectra of aqueous solutions containing lanthanide-cyclodextrin (Ln-CD) hosts (represented as color diamonds) and guest 2. b Color-coded guest exchange saturation transfer (GEST) effect plots of the studied library shown in a. c Schematic illustration of the obtained CODE-HD setup of a 3 × 3 multiwell plate loaded with nine different Ln-CD hosts (one host/well) and guest 2. Shown are proton magnetic resonance imaging (1H-MRI) (d), 19Fluorine-MRI (19F-MRI) (e), and CODE-HD map (f), where each color represents the chemical shift offset (Δω) of each Ln-CD:2 paramagnetic GEST effect (paraGEST, the color-code shown in b and assigned in Supplementary Table 3).