The present invention pertains to organic reflective layers comprising an organic radical cation compound, wherein the layer reflects in the infrared region. Preferably, the organic radical cation compound is a salt of an aminium radical cation. Also provided are marking systems comprising such reflective layers and methods of marking an article utilizing such reflective layers.
本发明涉及由有机基阳离子化合物组成的有机反射层,其中反射层在红外区域反射。有机自由基阳离子化合物最好是
铵自由基阳离子盐。此外,还提供了包含这种反射层的标记系统和利用这种反射层标记物品的方法。