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首页> 外文期刊>RSC Advances >Eu3+ and Tb3+ doped LaPO4 nanorods, modified with a luminescent organic compound, exhibiting tunable multicolour emission
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Eu3+ and Tb3+ doped LaPO4 nanorods, modified with a luminescent organic compound, exhibiting tunable multicolour emission

机译：掺杂有发光有机化合物的Eu3 +和Tb3 +掺杂的LaPO4纳米棒，呈现可调谐的多色发射

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摘要

Co-precipitation reaction followed by hydrothermal treatment were used to synthesise Eu3+ or Tb3+ doped LaPO4 nanorods, of 5-10 nm in width and 50-100 nm in length. Surface modification of the as-prepared nanoparticles with a selected luminescent organic compound resulted in formation of hybrid inorganic-organic nanomaterials. The products obtained exhibited tunable multicolour luminescence, dependent on the surface modification and applied excitation wavelength. The colour of their emission can be altered from red-orange to yellow-green. Powder X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM) and scanning transmission electron microscopy (STEM) confirmed the structure and morphology of the products synthesized. Successful surface modification of the nanophosphors was evidenced by analytical and spectroscopic techniques such as dynamic light scattering (DLS) - providing size distribution histograms and zeta potentials of the nanoparticles; IR spectroscopy and elemental analysis which proved the presence of an organic phase in the structure; spectrofluorometry (excitation/emission spectra and luminescence decay curves) which confirmed the formation of hybrid, surface modified nanomaterials revealing tunable multicolour emission.
机译：共沉淀反应然后进行水热处理用于合成宽5-10 nm，长50-100 nm的Eu3 +或Tb3 +掺杂的LaPO4纳米棒。用选择的发光有机化合物对所制备的纳米颗粒进行表面改性导致形成杂化无机-有机纳米材料。获得的产物表现出可调的多色发光，取决于表面改性和所施加的激发波长。它们的发射颜色可以从红橙色更改为黄绿色。粉末X射线衍射（XRD），高分辨率透射电子显微镜（HRTEM）和扫描透射电子显微镜（STEM）证实了所合成产物的结构和形态。纳米磷光体的成功表面改性已通过分析和光谱技术（例如动态光散射（DLS））证明-提供了纳米粒子的尺寸分布直方图和zeta电位;红外光谱和元素分析证明了结构中有机相的存在;荧光光谱法（激发/发射光谱和发光衰减曲线）证实了杂化的，表面改性的纳米材料的形成，揭示了可调的多色发射。

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