Efficient NIR-I fluorescence photoswitching based on giant fluorescence quenching in photochromic nanoparticles.
Shinya YamasakiSanae IshidaSunnam KimMihoko YamadaTakuya NakashimaTsuyoshi KawaiSeiji KuriharaTsuyoshi FukaminatoPublished in: Chemical communications (Cambridge, England) (2021)
A photoswitchable near-infrared (NIR) fluorescent nanoparticle (NP) was designed and prepared. The NP showed a characteristic AIE property and high-contrast NIR fluorescence photoswitching with full reversibility. Such efficient NIR fluorescence photoswitching originated from the amplified fluorescence quenching mechanism based on intermolecular energy transfer in a densely packed NP state.