Halide Perovskite Nanocrystals with Enhanced Water Stability for Upconversion Imaging in a Living Cell.
J Phys Chem Lett
; 12(37): 8991-8998, 2021 Sep 23.
Article
en En
| MEDLINE
| ID: mdl-34514804
ABSTRACT
Halide perovskite nanomaterials are widely used in optoelectronics and photonics due to their outstanding luminescent properties, whereas their strong multiphoton absorption makes them prospective for bioimaging. Nonetheless, instability of perovskites in aqueous solutions is an important limitation that prevents their application in biology and medicine. Here, we demonstrate fluorescence and upconversion imaging in living cells by employing CsPbBr3 nanocrystals (NCs) that show an improved water-resistance (at least for 24 h) after their coating as individual particles with various silica-based shells. The obtained phTEOS-TMOS@CsPbBr3 NCs possess high quality, which we confirm with high-resolution transmission and scanning transmission electron microscopy, X-ray diffraction analysis, Fourier-transform infrared and energy-dispersive X-ray spectroscopies, as well as with fluorescence optical microscopy. The developed platform can make the halide perovskite NCs suitable for various bioimaging applications.
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Óxidos
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Titanio
/
Agua
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Compuestos de Calcio
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Nanopartículas
Límite:
Animals
/
Humans
Idioma:
En
Revista:
J Phys Chem Lett
Año:
2021
Tipo del documento:
Article