Synthesis and characterisation of highly emissive and kinetically stable lanthanide complexes suitable for usage ‘in cellulo’
作者:Robert A. Poole、Gabriella Bobba、Martin J. Cann、Juan-Carlos Frias、David Parker、Robert D. Peacock
DOI:10.1039/b418964g
日期:——
series of cationic, neutral and anionic europium and terbium complexes based on structurally related, nonadentate ligands based on the cyclen macrocycle. Each complex incorporates a tetraazatriphenylene moiety and overall absolute emission quantum yields are in the range 15-40% in aerated aqueous media. Dynamic quenching of the lanthanide excited state occurs with electron-rich donors, e.g. iodide,
报道了一系列基于结构相关的基于单环大环的非齿配体的阳离子,中性和阴离子euro和ter络合物的合成和光物理特性。每个配合物都包含一个四氮杂三苯并菲部分,在充气水介质中的绝对绝对发射量子产率在15-40%的范围内。镧系元素激发态的动态猝灭发生在富电子给体上,例如碘化物,抗坏血酸盐和尿酸盐,并提出了涉及电子转移过程的机理解释。阳离子镧系元素络合物被N1H / 3T3细胞吸收,并倾向于位于细胞核内。