Instituto de Ciencia de Materiales de Sevilla, Consejo Superior de Investigaciones Científicas-Universidad de Sevilla, Américo Vespucio 49, 41092 Sevilla, Spain.
Nanoscale. 2010 Jun;2(6):936-41. doi: 10.1039/b9nr00338j. Epub 2010 Mar 6.
In this work, we demonstrate that optical resonators built using all-nanoparticle-based porous building blocks provide a responsive multifunctional matrix, totally different emission spectra being attained from the same embedded luminescent nanophosphors under varying environmental conditions. We show a clear correlation between modifications in the ambient surroundings, the induced changes of the resonant modes, and the resulting variations in the emission response. The method is versatile and allows nanophosphors of arbitrary shape to be integrated in the cavity. By precise control of the spectral features of the optical resonances, luminescence is strongly modulated in selected and tuneable wavelength ranges. Applications in the fields of sensing and detection are foreseen for these materials.
在这项工作中，我们证明了使用全纳米粒子多孔构建块构建的光学谐振器提供了一种响应多功能基质，在不同的环境条件下，从相同嵌入的发光纳米荧光粉获得完全不同的发射光谱。我们表明，在环境周围的修改之间存在明显的相关性，共振模式的诱导变化，以及发射响应的变化。该方法具有通用性，允许任意形状的纳米荧光粉在腔内集成。通过对光学共振的光谱特性的精确控制，在选定的和可调谐的波长范围内强烈调制发光。预计这些材料将在传感和检测领域得到应用。
