Synthesis, characterization and photophysical studies of novel pyrene labeled ruthenium (II) trisbipyridine complex cored dendrimers
作者:Mireille Vonlanthen、Amanda Cevallos-Vallejo、Edgar Aguilar-Ortíz、Andrea Ruiu、Pasquale Porcu、Ernesto Rivera
DOI:10.1016/j.polymer.2016.06.061
日期:2016.9
Two new bipyridine ligands containing, respectively, two and four pyrene units were prepared. The obtained compounds were employed to synthesize new pyrene labeled ruthenium (II) trisbipyridine complex as well as a pyrene labeled ruthenium (II) trisbipyridine cored dendrimer. The obtained bipyridine ligands and the ruthenium complexes were characterized by NMR spectroscopy and MALDI-TOF mass spectroscopy
制备了两个分别含有两个和四个units单元的新的联吡啶配体。所获得的化合物用于合成新的pyr标记的钌(II)三联吡啶络合物以及a标记的钌(II)三联吡啶核树状聚合物。通过NMR光谱和MALDI-TOF质谱对得到的联吡啶配体和钌络合物进行表征。通过吸收和荧光光谱研究了发光大分子的光学和光物理性质。注意到所获得的配合物的吸收光谱对应于它们的组分的吸收光谱的总和,这表明在基态中缺乏相互作用。观察到从from单元到金属络合物核的有效能量转移,从而导致在upon吸收波长处激发时观察到特征性的联吡啶吡啶钌发射带。此外,在第一代树枝状大分子中对氧猝灭具有有效的保护作用。