solubilizing groups. Star complex YZ4, which is homoleptic but lacks the octahedral symmetry, was synthesized as a reference compound. The Star complexes were synthesized using two approaches: in the first, Ru(4,4′-(Br)2-2,2′-bpy)3 was reacted in a Sonogashira cross coupling reaction with the ethynyl-OPE-Ipa linkers; in the second, the 2,2′-bpy-OPE-Ipa ligands were reacted with Ru(DMSO)4(PF6)2. The photophysical
三个均质的星形
钌聚
吡啶基络合物,分别称为Star YZ1,Star YZ2和Star YZ3,其中Ru(II)中心与三个联
吡啶配体配位,每个
配体带有两个低聚(亚苯基
乙炔基)(OPE)刚性连接单元,以
间苯二甲酸终止合成用于结合至金属氧化物表面的酯基(Ipa)。在Star YZ3中,每个OPE接头均被两个正丁氧基(n- BuO)增溶基团取代。合成了具有均一性但缺乏八面体对称性的星形配合物YZ4作为参考化合物。使用两种方法合成Star配合物:在第一种方法中,Ru(4,4'-(Br)2 -2,2'-bpy)3在Sonogashira交叉偶联反应中与
乙炔基-OPE-Ipa接头反应。在第二步中,使2,2'-bpy-OPE-Ipa
配体与Ru(
DMSO)4(PF 6)2反应。研究了Star配合物在溶液中的光物理行为,并将其固定在介孔纳米TiO 2薄膜(Star / TiO 2)的表面。初步近似,当将化合物固定在TiO