Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, USA.
J Am Chem Soc. 2009 Dec 23;131(50):18069-71. doi: 10.1021/ja907885m.
We demonstrate the conceptual advantage of using metal-organic frameworks (MOFs) for the creation of a polymetallic material that contains several different near-IR-emitting lanthanide cations and operates as a barcode material with unique luminescence properties. By choosing the ratio of lanthanide salts used during the synthesis, we can control the ratio of lanthanide cations present in the resulting material. We have demonstrated that the emission intensity of each of the different lanthanide cations is proportional to its amount in the MOF crystal, resulting in unique spectroscopic barcodes that depend on the lanthanide cation ratios and compositions.
我们展示了使用金属-有机框架（MOFs）来创建包含多种近红外发光镧系金属阳离子的多金属材料的概念优势，该材料可用作具有独特发光特性的条形码材料。通过选择合成过程中使用的镧系盐的比例，我们可以控制所得材料中镧系金属阳离子的比例。我们已经证明，不同镧系金属阳离子的发射强度与其在 MOF 晶体中的含量成正比，从而产生了依赖于镧系金属阳离子比例和组成的独特光谱条形码。
