Fig. 3 | Nature Communications

Fig. 3

From: Stable radical anions generated from a porous perylenediimide metal-organic framework for boosting near-infrared photothermal conversion

Fig. 3

Characterizations of Zr-PDI•−. a TEA adsorption and desorption of activated Zr-PDI; inset shows TEA vapor in Zr-PDI channel. b 1H NMR spectra of TEA-loaded Zr-PDI before (black line) and after (red line) irradiation; inset shows the peaks of PDI. c EPR spectra of solid Zr-PDI•− and P-2COOH•−; inset shows the magnified spectrum of P-2COOH•−. d Stability of Zr-PDI•− loaded with different amines under ambient conditions after a week. The ordinate represents the retention rates of the absorption peak at 1008 nm. TEA triethylamine, EDA ethylenediamine, TPA tripropylamine, DEA diethylamine, IPA isopropylamine, TMA trimethylamine

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