Design of Dipicolinic Acid Ligands for the Two-Photon Sensitized Luminescence of Europium Complexes with Optimized Cross-Sections
作者:Anthony D’Aléo、Alexandre Picot、Patrice L. Baldeck、Chantal Andraud、Olivier Maury
DOI:10.1021/ic8012975
日期:2008.11.17
2R, OR, SR, or NR 2) or the nature of the conjugated backbone (phenyl, phenylethynyl, naphtylethynyl, bis(phenylethynyl), or chalcone). The photophysical properties of related D 3 symmetric europium complexes (absorption and luminescence) were measured. Experiments using two-photon sensitized luminescence of a Eu (III) complex reveal large two-photon absorption (TPA) cross-section values (775 GM at
描述了一系列广泛的推挽式供体-π-共轭二吡啶甲酸配体的多步合成。配体的电荷转移特性可以通过改变供体基团(CH 2R,OR,SR或NR 2)或共轭主链的性质(苯基,苯基乙炔基,萘乙炔基,双(苯基乙炔基)或查尔酮)来调节。测量了相关的D 3对称euro配合物的光物理性质(吸收和发光)。使用Eu(III)络合物的双光子敏化发光的实验显示,二氯甲烷中的大双光子吸收(TPA)横截面值(在740 nm处为775 GM)。此外,可以从该系统研究中得出一些结构-性质关系,从而可以优化镧系元素配合物的TPA性质。