Anion Binding and Luminescent Sensing using Cationic Ruthenium(II) Aminopyridine Complexes
作者:Sara Jane Dickson、Martin J. Paterson、Charlotte E. Willans、Kirsty M. Anderson、Jonathan W. Steed
DOI:10.1002/chem.200800772
日期:2008.8.18
[Ru(eta(6)-C(6)H(4)MeCHMe(2))Cl(2)(L(3))] (1 c). The 1:2 complex 2 c is fluorescent, however, and acts as a fluorescent anion sensor because of the mixing of an anion-dependent charge-transfer component into the excited state. The 1:2 complexes of type 2 all exhibit interesting low symmetry (1)H NMR spectra that also are a useful handle on anion complexation. The electronic structures of L(3), 1 c and 2 c have
[Ru(eta(6)-C(6)H(4)MeCHMe(2))Cl(L)(2)] [BF(4)类型的一系列基于钌(II)的阴离子传感器的合成报道了[2],其中配体L代表一系列取代的吡啶基甲基-胺衍生物。基于咔唑的配体L(3)表现出荧光配体内电荷转移(ILCT)状态,该配体与配体到1:1络合物中的钌配位后,金属配体到金属的电荷转移(LMCT)猝灭[Ru(eta(6) -C(6)H(4)MeCHMe(2))Cl(2)(L(3))](1 c)。1:2络合物2c是荧光的,并且由于将依赖于阴离子的电荷转移成分混合到激发态而用作荧光阴离子传感器。类型2的1:2络合物均显示出有趣的低对称(1)H NMR光谱,这也是阴离子络合的有用方法。L(3)的电子结构