The XPS and TEM analyses support the distribution of Pd nanoparticles (Pd NPs) on the surface of Eu-MOF with a particle size of 5.7 ± 1.8 nm. MeOH solutions of Na + , K + , Mg 2+ , Ca 2+ , Fe 3+ , Mn 2+ , Cl , and SO 4 2 do not greatly affect the fluorescence ...
成功配位。X射线光电子能谱(XPS)图进一步证实了Eu 3+ 与游离羧基的结合。如图4(c)所示,可以清楚地观察到Eu@UiO-66(OH) 2 /(COOH) 2 中Eu 3+ 的结合能为1135.38eV,这证明了Eu@UiO-66(OH) 2 /(COOH) 2 中Eu 3+ 的存在。此外,从图4(d)可以看出,O 1s的结合能从531.83eV变为531.58eV,这表明Eu...
图3.Eu-TCPP和Eu0.52Tb0.48-TCPP在不同浓度Ag+及其它金属离子水溶液下的荧光变化 接下来,作者通过1H NMR、ESI-MS、XPS及EDS mapping等实验详细证明了离子交换过程的存在。同时PXRD及瞬态荧光实验证明,Ag+的引入并不影响Eu-TCPP的稳定性及E...
In addition, XPS, LUMO orbital energy level, fluorescence lifetime, ultraviolet absorption and other principles are used to explore the mechanism of fluorescence quenching. Surprisingly, Eu-MOF not only has excellent anti- counterfeiting ability and stability, can be used as anti-counterfeiting ...