School of Chemistry and Environment, Jiaying University, Meizhou, Guangdong, People's Republic of China.
Luminescence. 2012 May-Jun;27(3):242-5. doi: 10.1002/bio.1340. Epub 2011 Sep 7.
A new Eu(III) complex, Eu(III)(DBM)(3) BIOQ, has been synthesized with dibenzoylmethane (DBM) as the first ligand and 2-(benzimidazol-2-yl)-8-octyloxyquinoline (BIOQ) as the second ligand. The stability of the complex was analysed by DSC-TG. The results show that the Eu(III) complex has a relatively high thermal stability with a melting point of 235 °C and a decomposition temperature (onset) of 252 °C. The fluorescence properties of the compound were also investigated. The fluorescence results reveal that the as-prepared complex shows the characteristic maximum emission spectra of Eu(III) at 611 nm (λ(ex) = 350 nm). In addition, the photoluminescence spectrum of the complex in the solid state exhibits a single and symmetrical emission band at 611 nm, with a full width at half-maximum of 4.7 nm, showing high colour purity. This finding indicates the possibility for the development of brighter red luminescent materials.
一种新型 Eu(III) 配合物 Eu(III)(DBM)(3)BIOQ 已被合成，其中 DBM 为第一配体，2-(苯并咪唑-2-基)-8-辛氧基喹啉（BIOQ）为第二配体。通过 DSC-TG 分析了配合物的稳定性。结果表明，Eu(III) 配合物具有相对较高的热稳定性，熔点为 235°C，分解温度（起始）为 252°C。还研究了该化合物的荧光性质。荧光结果表明，所制备的配合物在 611nm 处显示出 Eu(III)的特征最大发射光谱（λ(ex)=350nm）。此外，配合物在固态下的光致发光光谱在 611nm 处呈现单一且对称的发射带，半峰全宽为 4.7nm，表现出高纯度的颜色。这一发现表明，开发更亮的红色发光材料是可能的。
