Fig. 4: Sensitivity investigations. | Nature Communications

Fig. 4: Sensitivity investigations.

From: Regenerable and stable sp2 carbon-conjugated covalent organic frameworks for selective detection and extraction of uranium

Fig. 4

a Fluorescence emission spectra of TFPT-BTAN-AO upon gradual addition of UO22+ (λex = 277 nm). Inset photos show the fluorescence emission change (under a 365 nm UV lamp) of TFPT-BTAN-AO after addition of UO22+. b Fluorescence intensity at 460 nm versus the concentration of UO22+. Inset: The linear calibration plot for UO22+ detection. Error bars represent S.D. n = 3 independent experiments.

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