Synthesis and photoluminescence of a dendritic europium complex with carbazole moieties

A novel dendritic europium complex containing grafted carbazole units as functional peripheries was synthesized and characterized. The Foerster energy transfer from the peripheries of carbazole units to β-diketonate as well as from the hgands to the central Eu（Ⅲ） ions in the complex was demonstrated. Under the excitation of carbazole units and β-diketonate, characteristic red emission peaks at 612 nm with four shoulders due to the Eu（Ⅲ） ion transition of 5^D0→7^FJ （J=0-4） were observed for the complex.     

Photoluminescence properties of dinuclear lanthanide complexes in visible and near-infrared region

Several dinuclear lanthanide complexes of Ln2(HTH)6TPPHZ (Ln=Eu, Sm, Er, Nd, Yb, Ho; TPPHZ=Tetrapyrido (3,2-a:2',3'-c:3',2"-h:2"',3'"-j) phenazine; HTH=4,5,5,6,6,6-heptafluroro-1-(2-thienyl)hexane-1,3-dione were synthesized and their photoluminescence properties were investigated. After ligand-mediated excitation, all the complexes showed the characteristic luminescence of the corresponding Ln(III) ions in the visible and NIR regions attributed to energy transfer from the ligands to the metal center. For Eu...     

发光薄膜的制备及应用

与传统的发光粉制作的显示屏相比，发光薄膜在对比度、分辨率、热传导、均匀性、与基底的附着性、释气速率等方面都显示出较强的优越性。因此，作为功能材料，发光薄膜在诸如阴极射线管（CRTs)、电致发光显示（ELDs)及场发射显示（FEDs)等平板显示领域中有着广阔的应用前景。发光薄膜的制备方法有许多种，包括溅射法、金属有机物化学汽相沉积法、溶胶－凝胶法、脉冲激光沉积法、喷雾热解法、蒸镀法等。本文系统地对这些发光薄膜的制备方法及其应用情况作以简单的介绍，最后对发光薄膜的发展趋势进行了展望。