Organic phosphorescence materials have received wide attention in bioimaging for bio‐low toxicity and large Stokes. Herein, a design strategy to achieve near‐infrared (NIR) excitation and emission of organic room‐temperature phosphorescence through two‐stage confinement supramolecular assembly is presented. Via supramolecular macrocyclic confinement, the host–guest complexes exhibit phosphorescence with two‐photon absorption (excitation wavelength up to 890 nm) and NIR emission (emission wavelength up to 800 nm) in aqueous solution, and further nano‐confinement assembly significantly strengthens phosphorescence. Moreover, the nano‐assemblies possess color‐tunable luminescence spanning from the visible to NIR regions under different excitation wavelengths. Intriguingly, the prepared water‐soluble assemblies maintain two‐photon absorption and multicolor luminescence in cells or vivo.

The construction of lanthanide multicolor luminescent materials with tunable photoluminescence properties has been developed as one of increasingly significant topics and shown inventive applications in miscellaneous fields. However, fabricating such...

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Herein, we reported the biaxial pseudorotaxane supramolecular optical probe, which constructed by cucurbit[8]uril (CB[8]) encapsulating double cationic bromophenols pyridinium salt derivative (BPTN) and co-assembling with disulfide-pillar[4]arene (SSP[4]). As compared with...