Huang Zhiyong, Xiong Chenhan, Huang Jianhua, Zhao Tianxiang, Cao Wei, Du Guoping, Chen Nan
School of Materials Science and Engineering, Nanchang University, Nanchang, China.
Hunan Engineering Laboratory for Control and Optimization of PV Systems, Hunan Vocational Institute of Technology, Xiangtan, China.
Luminescence. 2022 Jun;37(6):944-952. doi: 10.1002/bio.4239. Epub 2022 Apr 5.
Inorganic-organic hybrid nanoparticles formed by lanthanide-doped nanostructures and organic ligands have been intensively studied, which could greatly increase their photoluminescence performance as a result of the energy transfer process from organic ligands to Ln ions. However, the photoluminescence intensity and excitation spectral width are still quite limited on coordinating with a single type of organic ligand. In this work, Eu -doped LaF (LaF :Eu ) nanoparticles were prepared using a hydrothermal method, and were then hybridized with benzoic acid and thenoyltrifluoroacetone to form the hybrid nanostructures. After that, the hybrid nanostructures were mixed with 2,2'-azobisisobutyronitrile and methyl methacrylate to prepare the composites. The sample obtained by hybridization and composite doping with 5% Eu exhibited the best photoluminescence performance. The excitation peak width and luminescence intensity of the hybrid nanostructures were significantly increased. The excitation spectral width of the inorganic-organic mixed hybrid nanostructures was particularly enhanced, and covered the whole ultraviolet band region of solar light on Earth. The prepared composites exhibited good optical properties.
由镧系元素掺杂的纳米结构与有机配体形成的无机-有机杂化纳米粒子已得到深入研究，由于从有机配体到镧系离子的能量转移过程，其光致发光性能可大大提高。然而，与单一类型的有机配体配位时，光致发光强度和激发光谱宽度仍然相当有限。在这项工作中，采用水热法制备了铕掺杂的氟化镧（LaF₃:Eu³⁺）纳米粒子，然后将其与苯甲酸和噻吩甲酰三氟丙酮杂交形成杂化纳米结构。之后，将杂化纳米结构与2,2'-偶氮二异丁腈和甲基丙烯酸甲酯混合制备复合材料。通过5%铕杂交和复合掺杂得到的样品表现出最佳的光致发光性能。杂化纳米结构的激发峰宽度和发光强度显著增加。无机-有机混合杂化纳米结构的激发光谱宽度尤其增强，并覆盖了地球上太阳光的整个紫外波段区域。所制备的复合材料表现出良好的光学性能。
