Synthesis and Characterization of Ru(II) Complexes with π‐Expansive Imidazophen Ligands for the Photokilling of Human Melanoma Cells
作者:Goutam Ghosh、Huimin Yin、Susan M.A. Monro、Tariq Sainuddin、Lloyd Lapoot、Alexander Greer、Sherri A. McFarland
DOI:10.1111/php.13177
日期:2020.3
Ru(II) complexes were synthesized with π‐expanding (phenyl, fluorenyl, phenanthrenyl, naphthalen‐1‐yl, naphthalene‐2‐yl, anthryl and pyrenyl groups) attached at a 1H‐imidazo[4,5‐f][1,10]phenanthroline ligand and 4,4′‐dimethyl‐2,2′‐bipyridine (4,4′‐dmb) coligands. These Ru(II) complexes were characterized by 1D and 2D NMR, and mass spectroscopy, and studied for visible light and dark toxicity to human
Ru(II) 配合物是通过 π-扩展(苯基、芴基、菲基、萘-1-基、萘-2-基、蒽基和芘基)连接在 1H-咪唑并[4,5-f][1 ,10]菲咯啉配体和 4,4'-二甲基-2,2'-联吡啶 (4,4'-dmb) 配体。这些 Ru(II) 配合物通过 1D 和 2D NMR 和质谱进行表征,并研究了对人恶性黑色素瘤 SK-MEL-28 细胞的可见光和暗毒性。在 SK-MEL-28 细胞中,Ru(II) 复合物具有高光毒性(EC50 = 0.2-0.5 µm)和低暗毒性(EC50 = 58-230 µm)。该系列中最高的光疗指数 (PI) 是在带有 2-(芘-1-基)-1H-咪唑并 [4,5-f][1,10] 菲咯啉配体的 Ru(II) 配合物上发现的。这种高 PI 部分归因于芘基添加的富 π 特性,由于与 3MLCT 状态的平衡,可能存在低洼和寿命更长的 3IL 状态。虽然这种芘基 Ru(II)