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Photo-switchable AIE properties and application of BTE-2PBT triad. (a) Photographs of BTE-2PBT PMMA film illuminated with alternate 254 nm UV and >510 nm visible light taken under white light or 365 nm UV; (b) PL spectra of BTE-2PBT PMMA film at PSS illuminated with alternate 254 nm UV and >510 nm visible light (λex = 365 nm); (c) Photoerasing, rewriting, and non-destructive reading of fluorescent images on BTE-2PBT PMMA film.
