Fig. 3: MIR reflectivity study. | Nature Communications

Fig. 3: MIR reflectivity study.

From: Direct observation of photoinduced sequential spin transition in a halogen-bonded hybrid system by complementary ultrafast optical and electron probes

Fig. 3: MIR reflectivity study.The alternative text for this image may have been generated using AI.

a Photoinduced relative change of the reflectivity spectra (ΔR/R) from 1410 to 1490 cm−1 (in which a coupled stretching mode of C-C bonds in salicylaldimine rings of the ligands of [Fe(Iqsal)2]+ cations are observed, see Supplementary Movies 1 and 2) at selected time delays measured at 100 K (LT phase). Scaled (0.2) thermally induced ΔR/R spectra between 290 and 90 K are also plotted. b Photoinduced ΔR/R spectra from 1340 to 1370 cm−1 (in which a C=C stretching mode of the [Ni(dmit)2]− anions are observed) at selected time delays. Scaled (0.08) thermally induced ΔR/R spectra between 290 and 90 K are also plotted. a, b the vertical dashed lines indicate the wavenumbers of the probe energies of the selected temporal profiles in c, d, respectively. c Temporal profiles of selected wavenumbers, 1438 and 1450 cm−1. The inset shows the schematic molecular structure of [Fe(Iqsal)2]+ cations. The solid lines show the results of the global fitting (Supplementary Equation 1). d Temporal profiles of selected wavenumbers, 1348 and 1357 cm−1 (open circles). The inset represents a C=C stretching mode of the [Ni(dmit)2]− anions. The solid lines show the results of the global fitting. Source data are provided as a Source Data file.

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