Photophysical and bioactivity behavior of fac-rhenium(I) derivatives containing ditopic sulfurpyridine ligands
作者:Vanesa Fernández-Moreira、Héctor Sastre-Martín
DOI:10.1016/j.ica.2016.07.038
日期:2017.4
and 6-methylpyridine-2(1H)thione (L3) were synthesised. The ditopic thiol/thione-pyridine derivatives (Spy derivatives) behaved as sulfur donor in all cases, affording two neutral (1 and 2) and a cationic (3) complex respectively. X-ray diffraction revealed the different coordination mode presented by L2 and L3, a thiolate and a thione donor respectively. Photophysical studies showed that they have moderate
摘要发光的ac(I)衍生物已证明其作为细胞显像剂的巨大潜力。但是,特别是在轴向配体为S-供体配体的情况下,仍然缺乏关于结构-生物活性和生物分布关系的信息。因此,新的[Re(bipy)(CO)3L] 0 / +配合物,其中L为4-巯基吡啶(L1),-2-巯基吡啶(L2)和6-甲基吡啶-2(1H)硫酮(L3) )进行了合成。在所有情况下,对位硫醇/硫酮吡啶衍生物(Spy衍生物)均表现为硫供体,分别提供两种中性(1和2)和阳离子(3)配合物。X射线衍射揭示了L2和L3,硫醇盐和硫酮供体分别呈现的不同配位模式。光物理研究表明,它们具有中等强度的发射强度,这些强度暂时分配给3MLCT跃迁(1、2)以及1IL和3MLCT跃迁的混合物(3),其寿命在ns范围内。可能分别存在供体和受体配体SPy和联吡啶,这促进了非辐射LLCT过渡的发生,这降低了通过辐射3MLCT过渡耗散能量的可能性。此外,在人类癌性A5