A facile solvothermal method is reported to synthesize highly photoluminescent Ag 2 Se quantum dots (QDs) with emission at 1300 nm in the second near-infrared window. After surface modification of C18-PMH-PEG, the Ag 2 Se QDs possess bright photoluminescence, good watersolubility, high colloidal stability and photostability, as well as decent biocompatibility, which are further successfully performed in in vivo deep imaging of organs and vascular structures with high spatial resolution. This new NIR-II fluorescent nanoprobe with small sizes, ideal optical properties, and decent biocompatibility opens up exciting opportunities for future biomedical applications.

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Ionic liquids modulated PEDOT films with synergistically enhanced thermoelectric and mechanical performances have promising applications in vigorous wearable electronics and IoT sensors.

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