Fig. 2
Emission spectra and corresponding photograph of Ln-MOFs. a In powder. b In film. c In THF solution. d Photograph of powder samples under 254 nm UV lamp. e Photograph of film samples under 254 nm UV lamp. f Photograph of liquid samples under 254 nm UV lamp. Ln-MOFs: Eu x Tb1-x-CTP-COOH (x = 1, 0.84, 0.69, 0.47, 0.38, 0.19, 0.12, 0.06, and 0)
