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. 2019 Dec 11;6(6):064303. doi: 10.1063/1.5129626

FIG. 4.

FIG. 4.

Laser T-jump/XAS probe study on a [Co2+] = 500 mM, [Cl−] = 8 M water solution. (a) Static XAS spectra were taken without the laser at 80 °C (green) and 60 °C (blue). The difference between the two static XAS spectra at T = 80 °C and T = 60 °C is displayed by the black trace (scaled by ×8) and overlaid with the pump-probe data (scaled by ×100) obtained at 7 ns by the laser-induced T-jump (red dots). The static spectra were scaled with a common factor (maximum of the T = 60 °C curve), keeping the presence of the isosbestic points. (b) Reference static X-ray absorption spectra at the Co K-edge. Blue: [Co(H2O)62+] = 250 mM water solution at room temperature. Green: [CoCl4][N(CH3)4]2(s) pellet. Their static difference is displayed by the orange solid curve. The spectra were scaled in order to have the same integrated area below the curves. In this way, the presence of the isosbestic points is retrieved.