作者:Suxiang Deng、Greg Krueger、Prasad Taranekar、Saengrawee Sriwichai、Ruifa Zong、Randolph P. Thummel、Rigoberto C. Advincula
DOI:10.1021/cm200228p
日期:2011.7.26
We report the synthesis and characterization of ruthenium(II)-cored polythiophene dendrimers. Four new redox-active ruthenium(II) pyridine oligothiophene dendritic complexes that fluoresce in the near-infrared region have been synthesized, and their absorption spectra, fluorescence properties, and redox behavior have been investigated. The dendritic ligands phen3T and phen7T containing 1,10-phenanthroline
我们报告合成和表征钌(II)为核心的聚噻吩树枝状大分子。合成了四种在近红外区域发荧光的新型氧化还原活性钌(II)吡啶低聚噻吩树枝状配合物,并研究了它们的吸收光谱,荧光性质和氧化还原行为。合成并使用了含有1,10-菲咯啉作为螯合位点和两个低聚噻吩树枝状分子(3T6COMe和7T6COMe)的树枝状配体phen3T和phen7T。此处研究的金属-聚噻吩树状大分子为[Ru(bpy)2(phen3T)] 2 +,[Ru(bpy)2(phen7T)] 2 +,[Ru(phen3T)3 ] 2+和[Ru(phen7T)3 ] 2+。加入酸后,游离的树枝状配体的电荷转移吸收带显着红移,荧光被极大地猝灭。Ru(II)聚噻吩树状聚合物在紫外线区域表现出非常强的金属到配体电荷转移(MLCT)吸收和增强的吸收,可以被视为更好的光收集物种。MLCT发射由于其平面激发态而异常红移(〜165 nm)。树枝状聚合物的核