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(a) Optical images of CTFs and FTFs with different colours under ambient light (upper) and excited by 365 nm UV light (lower). (b) Photoluminescence (PL) spectra of FTFs and corresponding SDs. (c) PL spectra of FTFs doped with two kinds of CdTe NCs. (d) Fluorescence decay profiles of FTFs with an excitation wavelength 365 nm. (e) Schematic illustration of the composition of FTFs. (f) Optical image of FTFs soaking in water for 2 days.
