Abstract
AbstractTunable photoluminescence nanomaterials have aroused increasing interest from researchers recently due to their application in bioimaging, photodynamic therapy, and energy conversion. Herein, an artificial ternary nanosystem comprised of dithienylethene‐bridged bis(permethyl‐β‐CD)s, dodecyl‐bearing porphyrin, and amphipathic near‐infrared (NIR) cyanine fluorochrome is conveniently constructed by rationally designing the host/guest components, dimensions, and properties. In this system, an effective energy transfer (ET) from porphyrin to cyanine fluorochrome leads to the dramatic enhancement of NIR fluorescence intensity and more crucially, this process can be efficiently regulated by distinct light input, achieving photoswitching ET‐NIR fluorescence in aqueous media.
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