Preparation, characterization and photophysical properties of layered zirconium bis(monohydrogenphosphate) intercalated with rare earth complexes

Two kinds of rare earth (RE) complexes were intercalated into zirconium bis (monohydrogenphosphate) (alpha -ZrP) by exchanging the RE complexes into th e p-methyoxyaniline (PMA) preintercalated compound Zr(O3POH)(2). 2PMA (alph a -ZrP . 2PMA). Powder X-ray diffraction patterns reveal that Eu(DBM)(3)phe n (DBM: dibenzoylmethane, phen: 1,10-phenanthroline) and Tb(AA)(3)phen (AA: acetylacetone) intercalated into alpha -ZrP . 2PMA. This was confirmed by the UV-visible spectra of both the RE complexes and the assemblies. At the same time, the assemblies have better luminescent properties, and the fluor escent lifetimes of RE3+ in the excited state in the assemblies are much lo nger than those in the complexes. The stabilities of the assemblies under U V radiation are much better than those of the RE complexes.