6533b86dfe1ef96bd12c9455
RESEARCH PRODUCT
Efficient Cementing of CH3NH3PbBr3Nanoparticles to Upconversion Nanoparticles Visualized by Confocal Microscopy
Soranyel Gonzalez-carreroMaría González-béjarLaura Francés-sorianoEnrique Navarro-ragaJulia Pérez-prietoRaquel E. Galiansubject
PhotoluminescenceMicroscopeMaterials scienceNanostructureConfocalNanoparticleNanotechnology02 engineering and technology010402 general chemistry021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciences0104 chemical sciencesElectronic Optical and Magnetic Materialslaw.inventionBiomaterialsColloidConfocal microscopylawElectrochemistry0210 nano-technologyLuminescencedescription
Upconversion-perovskite nanohybrids are prepared by assembling CH3NH3PbBr3 perovskite nanoparticles (PK) with naked NaYF4:Yb3+,Tm3+ nanoparticles (UCn) via an innovative strategy consisting of using cucurbit[7]uril (CB[7]) to anchor the perovskite nanoparticles firmly and closely to the upconversion nanoparticles, thus leading to UCn@PKCB nanohybrids. A commercial multiphoton laser scanning confocal microscope is used to demonstrate the successful assembly. This technique proves to be useful to evaluate luminescence lifetime in the range of several tens of μs and allows visualization of the extraordinarily efficient nontrivial resonance energy transfer from the upconversion nanoparticle to the perovskite after near-infrared (NIR) excitation of the nanohybrid as well as the homogeneity of the UCn@PKCB sample. The considerable photostability of the perovskite in these nanohybrids is demonstrated by prolonged irradiation of the nanohybrid under UV light as well as under NIR light.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-05-20 | Advanced Functional Materials |