Synthesis and luminescence properties of CdSe:Eu NPs and their surface polymerization of poly(MMA-co-MQ)
| Autor: | Li-Jing Liu, Jun-Fang Gao, Sheng-Li Yong, Xing-Wang Liu, Jun-Hong Yang |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Absorption spectroscopy Nanoparticle 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Fluorescence 0104 chemical sciences Chemical engineering Polymerization Geochemistry and Petrology Emission spectrum Particle size Absorption (chemistry) 0210 nano-technology Luminescence |
| Zdroj: | Journal of Rare Earths. 36:946-953 |
| ISSN: | 1002-0721 |
| DOI: | 10.1016/j.jre.2018.05.005 |
| Popis: | CdSe:Eu nanoparticles (NPs) were synthesized using an oil phase method and the substitution of Cd2+ with Eu3+ was confirmed by XRD, TEM, UV-Vis absorption and fluorescence emission analyses. The CdSe:Eu NPs are monodispersed and uniform spherical particles with a diameter of 3.2 nm, bigger than the pure CdSe NPs (2.3 nm), but with a similar cubic structure as CdSe NPs. Compared with those of pure CdSe NPs, both emission spectrum and absorption spectrum of CdSe:Eu NPs are red-shifted. The CdSe:Eu NPs are incorporated into poly(MMA-co-MQ) to afford poly(MMA-co-MQ)-CdSe:Eu NPs with the cubic structure and particle size (∼3–4 nm) similar to those of CdSe:Eu NPs. The TEM imaging suggests that the CdSe:Eu NPs are uniformly dispersed in poly(MMA-co-MQ) without any obvious aggregation. The fluorescent emission peak and absorption peak of poly(MMA-co-MQ)-CdSe:Eu NPs are between those of CdSe:Eu NPs and poly(MMA-co-MQ), possibly due to the energy transfer caused by the interactions of Cd or Eu atoms on the surfaces of CdSe:Eu NPs with the N and O atoms of poly(MMA-co-MQ). These CdSe:Eu and poly(MMA-co-MQ)-CdSe:Eu NPs with tunable photoluminescence properties can be potentially used for the fabrication of optical and optoelectronic devices. |
| Databáze: | OpenAIRE |
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