Fig. 4

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Overview spectra of the GO + H experiment at 3.1 K. (a) MIR spectrum recorded after depositing a para-H2 matrix containing trans-GO and Cl2 at 3.1 K. (b) Difference spectrum corresponding to the 365 nm irradiation, (c) Difference spectrum corresponding to the 2217 nm irradiation. (d) Difference spectrum corresponding to the dark process. (e) Difference spectrum, corresponding to the second 365 nm irradiation and the second 2217 nm irradiation. Difference spectra were obtained by subtracting the MIR spectrum recorded before each experimental step. R1: O=Ċ−CH=O, R2: HO−ĊH−CH=O.
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