Introducing a New Family of Biotinylated Ir(III)-Pyridyltriazole Lumophores: Synthesis, Photophysics, and Preliminary Study of Avidin-Binding Properties
作者:Andrea Baschieri、Sara Muzzioli、Valentina Fiorini、Elia Matteucci、Massimiliano Massi、Letizia Sambri、Stefano Stagni
DOI:10.1021/om5007962
日期:2014.11.10
Six new biotinylated reagents derived from monocationic pyridyl-1,2,3-triazole-based Ir(III) complexes of the general formula [(C∧N)2Ir(N∧N-spacer-X-CO-biotin)]+, where HC∧N is 2-phenylpyridine, N∧N is the neutral chelating (2-pyridyl)-1,2,3-triazole ligand, the term “spacer” refers to alkyl (−C11H22) or aromatic (p-phenyl- or 4,4′-biphenyl-) chains, and X is NH or O, have been prepared and characterized
六种新的生物素化试剂,它们衍生自具有通式[(C∧N)2 Ir(N∧N -spacer-X-CO-biotin)]的单阳离子吡啶基-1,2,3-三唑基Ir(III)配合物+,其中HC∧N是2-苯基吡啶,N∧N是中性螯合(2-吡啶基)-1,2,3-三唑配体,术语“间隔基”是指烷基(-C 11 H 22)或芳族(已经制备并表征了对-苯基-或4,4'-联苯-)链,且X为NH或O。光激发后,液体CH 2 Cl 2中的所有六种络合物室温下的水溶液和水溶液显示出强烈的强度(量子产率高达0.60(复合物4b))和相当长的蓝绿色发光,在每种情况下都对应于一个约1的峰值的振动结构。480和 508纳米 这些特征,再加上在77 K冷冻的相同样品中观察到的刚性变色现象的减少,提示3LC型激发态是发射的主要贡献者。这些新的生物素化复合物与抗生物素蛋白的相互作用已通过4'-羟基偶氮苯-2-羧酸(HABA)测定法和发射