impregnated with different metal-carbonyl compounds, i.e. W(CO) 6 (WHC) and
Mn 2 (CO) 10 (DMDC) (Fig. 17b and c, respectively). These compounds yield
diagonal and diagonal plus intramolecular cross peaks, respectively (Fig. 17d and
e), which can afterwards be used to construct chemically encoded images (Fig. 17b
and c). Mixing beads with the different carbonyls, the independently labelled
particles can be identified in the mixture based on their diagonal and cross peak
vibrational characteristics. That is, the blue dashed square (Fig. 17d) is a
representative spectrum of the blue region in Fig. 17b, and the red/orange dashed
squares (Fig. 17e) are representative contributions of the red/orange regions in
Fig. 17 2D IR wide-field microscopy. a Schematic overview of the experimental setup using a widefield microscope and a dual AOM pulse shaper. b and c Chemical images with color coding as blue for
W(CO) 6 (WHC) and red/orange for Mn 2 (CO) 10 (DMDC) diagonal/(intramolecular) cross peak,
respectively. d and e Representative single pixel fully-absorptive 2D IR spectra of WHC and DMDC,
respectively. Adapted from Ref. [60]. Copyright American Chemical Society (2016)
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