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Two-Photon Excited Near-Infrared Phosphorescence Based on Secondary Supramolecular Confinement.

ABSTRACT: 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.

SUBMITTER: Ma XK

PROVIDER: S-EPMC9218752 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature

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Two-Photon Excited Near-Infrared Phosphorescence Based on Secondary Supramolecular Confinement.

Ma Xin-Kun XK Zhou Xiaolu X Wu Jing J Shen Fang-Fang FF Liu Yu Y

Advanced science (Weinheim, Baden-Wurttemberg, Germany) 20220424 18

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 wavelen ...[more]

PMID: 35466559

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