有机金属铱(III)(Ir)配合物作为金属抗癌药物的潜力受到了相当多的关注。在本研究中,制备并表征了 12 个半夹心 Ir 咪唑-菲咯啉/菲配合物。复合物表现出良好的抗增殖活性,其中一些复合物对A549细胞的抑制作用明显优于顺铂。这些复合物具有合适的荧光,并且确定了非能量依赖性摄取途径,随后导致它们在溶酶体中积累并造成溶酶体损伤。此外,复合物可以抑制细胞周期(G1期)并催化细胞内NADH氧化,从而证实细胞内活性氧(ROS)水平升高,从而证实了氧化机制。 Western blotting进一步证实复合物可以通过溶酶体-线粒体抗癌途径诱导A549细胞凋亡,这与顺铂不一致。总之,这些配合物为有机金属非铂抗癌药物的开发提供了新的概念。
Physico-chemical studies of fused phenanthrimidazole derivative as sensitive NLO material
摘要:
Heterocyclic phenanthrimidazole derivative, 2-(4-fluorophenyl)-1-p-tolyl-1H-imidazo[4,5-f] [1,10] phenanthroline (FPTIP) has been synthesized and characterised by NMR, mass and CHN analysis. The FFTIP was evaluated concerning their solvatochromic properties and molecular optical nonlinearities. Their electric dipole moment (mu), polarizability (alpha) and hyperpolarizability (beta) have been calculated theoretically and the results indicate that the extension of the pi-framework of the ligands has an effect on the NLO properties. The energies of the HOMO and LUMO levels and the molecular electrostatic potential (MEP) energy surface studies have exploited the existence of intramolecular charge transfer (ICT) within the molecule. (C) 2012 Elsevier B.V. All rights reserved.