Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, 05508-000, São Paulo-SP, Brazil.
Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-970 Campinas, SP, Brazil.
Dalton Trans. 2022 Jun 13;51(23):9138-9143. doi: 10.1039/d2dt00770c.
Persistent luminescent materials are present in several recent studies on new applications and novel properties. In this work, we demonstrate, for the first time, the production of translucent flexible persistent composites based on SrMgSiO:Eu,Dy (SMSO) into cellulose ether matrix film. The composite was successfully prepared through a new optimized route of co-precipitation and microwave-assisted annealing followed by (3-aminopropyl)triethoxysilane (APTES) coating and dispersion in hydroxypropyl methylcellulose (HPMC). The SMSO@APTES/HPMC films show persistent luminescence emission at 475 nm (blue) and high transmittance in the visible range. To understand the fine distribution of the nanoparticles in the matrix, we have investigated their structure and dispersion by using Synchrotron Radiation X-ray fluorescence mapping and Scanning Transmission X-ray Microscopy. This innovative composite could bring new perspectives for the class of persistent luminescence materials, enhancing technologies in progress throwing light on new applications never perceived.
在最近的几项关于新应用和新特性的研究中，都存在持续发光材料。在这项工作中，我们首次展示了基于 SrMgSiO:Eu,Dy（SMSO）的半透明柔性持续复合材料在纤维素醚基质薄膜中的制备。该复合材料是通过共沉淀和微波辅助退火的新优化路线成功制备的，然后用（3-氨丙基）三乙氧基硅烷（APTES）进行涂层和分散在羟丙基甲基纤维素（HPMC）中。SMSO@APTES/HPMC 薄膜在 475nm（蓝色）处显示出持续发光发射，并且在可见光范围内具有高透光率。为了了解纳米粒子在基质中的精细分布，我们使用同步辐射 X 射线荧光映射和扫描透射 X 射线显微镜研究了它们的结构和分散性。这种创新复合材料可为持续发光材料带来新的视角，增强正在进行的技术，为从未感知到的新应用提供启示。
