Surface modification via 2-thenoyltrifluoroacetone and the photophysical studies
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ORIGINAL PAPER
Surface modification via 2‑thenoyltrifluoroacetone and the photophysical studies Li Yu1 · Jinwei Gao2 · Zhi Zeng1 · Yuhui Zheng1 Received: 17 July 2020 / Accepted: 5 September 2020 © Institute of Chemistry, Slovak Academy of Sciences 2020
Abstract The precise control of phosphors with well-defined features remains a challenging issue since its property has been closely related to the shape, surface modification and particle size. The studies to develop microstructure under mild conditions will be of general interests. Herein, 2-thenoyltrifluoroacetone (TTA) has been incorporated as a viable technique to bind with surface of B aMgF4:Eu3+ phosphor and such process has been proved to be an effective strategy in preparing inorganic materials. The well acceptable advantages of this way include facile synthesis steps, broaden excitation range and reduced particle size. Although lanthanide fluorides have been reported so far, there are limited studies concerning organic framework appended red phosphors. In this way, the exploitation of a simple method to assemble hybrid phosphors will be very valuable in opto-electronic industries. Keywords Hybrid phosphors · Spectral range · Luminescence · Europium
Introduction As a unique category in lanthanide phosphors, a variety of studies have been concentrated on lanthanide-doped fluorides due to their low phonon energy, large band gap, and excellent chemical stability (Ju et al. 2012; Qiu et al. 2011). The frequently used fluorine sources were considered as NaF or NaBF4, the discovery and exploitation of new composition for the framework will be urgently required. In recent years, an important fluoride material with double alkaline earth metal, B aMgF4, has been developed for its magnetic Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11696-020-01345-5) contains supplementary material, which is available to authorized users. * Zhi Zeng [email protected] * Yuhui Zheng [email protected] 1
Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, School of Chemistry, South China Normal University, Guangzhou 510006, People’s Republic of China
Guangdong Provincial Engineering Technology Research Center for Transparent Conductive Materials, South China Normal University, Guangzhou 510006, China
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properties, phase change (Scott 1979; Schafer et al. 1983), ferroelectric, multiferroic properties (Sayed et al. 2011), and special optical properties (Víllora et al. 2005; Kodama et al. 2001; Peña-Rodríguez et al. 2013). Therefore, the selection of new host to accommodate lanthanide ions will be highly expected. Although lanthanide fluorides have been prepared, such inorganic powder possesses limited solubility and flexibility, the synthesis of phosphor via the utilization of surfactant started to generate more interests. In general, the nanocrystals incorporated with organic ligands have been reported and the composite owned long decay time of the excited states and narrow emission
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