Rhodamine-modified fluorescent half-sandwich iridium and ruthenium complexes: potential application as bioimaging and anticancer agents
作者:Wenli Ma、Lihua Guo、Zhenzhen Tian、Shumiao Zhang、Xiangdong He、JuanJuan Li、Yuliang Yang、Zhe Liu
DOI:10.1039/c9dt00999j
日期:——
metal anticancercomplexes are non-fluorescent, which results in an uncertain mechanism of action (MoA). We designed and synthesized eight fluorescent half-sandwich iridium (Ir) and ruthenium (Ru) complexes by introducing rhodamine derivatives into the N^N-chelating ligand. These complexes have features of bio-imaging and anticanceragents and may merit future development as novel anticancer agents
Topoisomerase I inhibitory and photocleavage activity by ruthenium complexes containing a new polyaza ligand
作者:Xue-Wen Liu、Jie Huang、Yu-Xuan Tang、Song-Bai Zhang、Ji-Lin Lu
DOI:10.1080/24701556.2019.1661446
日期:2019.9.2
Two new rutheniumcomplexescontaining a new polyaza ligand were found to inhibit the DNA supercoiled relaxation mediated by topoisomerase I (topo I), cleave DNA under irradiation and interact with CT-DNA by intercalation. Both complexes exhibited fast singlet oxygen generation rate, and DNA photocleavage reaction should be initiated by 1O2. Furthermore, complex 2 showed higher photocleavage activity
发现含有新的聚氮杂配体的两种新的钌配合物可抑制拓扑异构酶I(拓扑I)介导的DNA超螺旋松弛,在辐射下切割DNA并通过嵌入与CT-DNA相互作用。两种复合物均显示出快速的单线态氧生成速率,并且DNA光裂解反应应由1 O 2引发。此外,复合物2显示出比复合物1高的光裂解活性,topo I抑制活性和DNA亲和力。这项工作表明,两种复合物可以作为具有高亲和力和良好DNA切割刀的DNA结合物。此外,复合物2可以充当良好的topo I抑制剂。
Aldehyde group functionalized iridium(III) complexes for the selective sensing of homocysteine
作者:Yonghua Liu、Qingqing Wang、Mei-Jin Li
DOI:10.1016/j.jorganchem.2019.120874
日期:2019.10
Two aldehyde group functionalized iridium(III) complexes were synthesized and characterized. The electronic absorption, emission and transient emission spectra were studied. The crystal structure of one of the complexes has been determined. Their interaction with homocysteine (Hcy) was investigated by UV–vis absorption, photoluminescence (PL), 1H NMR and mass spectroscopies. The photoluminesce of the
合成并表征了两种醛基官能化的铱(III)配合物。研究了电子吸收,发射和瞬态发射光谱。已经确定了一种配合物的晶体结构。通过紫外可见吸收,光致发光(PL),1 H NMR和质谱研究了它们与高半胱氨酸(Hcy)的相互作用。加入Hcy后,由于形成了噻嗪产物,复合物的光致发光显着增强,而加入半胱氨酸(Cys)和谷胱甘肽(GSH)后,发射光谱没有明显变化。这些探针可用于有效区分Hcy与Cys和GSH。