Synthesis and photophysical properties of ditrifluoroacetoxyboron complexes with curcumin analogues
作者:Lian Cai、Hengyi Du、Dan Wang、Heng Lyu、Dunjia Wang
DOI:10.1016/j.saa.2020.119297
日期:2021.3
Especially, complex 2c displayed the strongest emission intensity, the highest quantum yield in solution and the longest fluorescence lifetime in powder state in these complexes. In addtion, the emission bathochromic shifts of these complexes as a function of the solvent polarity parameter ET(30) were investigated by Lippert–Mataga approximation. It was observed that these complexes exhibited the
A variety of novel aromatic and heterocyclicaromatic curcuminoids were synthesised, characterised and their anti-inflammatory activities (AIA) determined in vivo. Some of these compounds also were tested for inflammatory mediator production. The AIA of the main representatives of these compounds were assessed by oral administration to female Wistar rats using (a) acute carrageenan-induced paw oedema
Based on the synthesis of curcumin and its derivatives from aromatic aldehydes, a novel series of palladium(II) complexes with curcumin (or its derivatives) and 2,2′-bipyridine have been synthesized through a directed self-assembly approach that involves spontaneous deprotonation of the curcuminoid ligands in H2O/acetone solution. These complexes have been characterized by 1H (13C) NMR, HRMS and elemental
基于从芳香醛合成姜黄素及其衍生物,通过涉及自发去质子化的定向自组装方法,合成了一系列新的钯(II)与姜黄素(或其衍生物)和2,2'-联吡啶的配合物H 2 O /丙酮溶液中的姜黄素配体的制备 这些配合物已通过1 H(13 C)NMR,HRMS和元素分析进行了表征。通过X射线衍射分析确定了3h的晶体结构。通过MTT测试它们的细胞毒性。初步结果表明,配合物3d,3f,3h对三种癌细胞(如MCF-7,HeLa和A549细胞)的增殖具有明显的抑制作用,它们的活性比顺铂高。进一步的机理研究表明,受试复合物3h使细胞周期停滞在S期,并可以通过依赖于活性氧(ROS)的途径破坏线粒体膜电位并诱导肿瘤细胞凋亡。
Synthesis, photophysical and solvatochromic properties of diacetoxyboron complexes with curcumin derivatives
作者:Heng Lyu、Dan Wang、Lian Cai、Dun-Jia Wang、Xiao-Ming Li
DOI:10.1016/j.saa.2019.05.031
日期:2019.9
spectroscopy in different solvents and solidstate. It was observed that their fluorescence spectra yielded a blue to yellow-green emission in solution and emitted a yellow to red emission in solidstate. Especially, the complex 3b displayed the strongest emission and the highest quantum efficiency (Φu = 0.98) in toluene among these complexes. The CIE coordinate of the complex 3b in solidstate was positioned
设计并合成了五个新的β-二酮结合姜黄素部分的二乙酰氧基硼配合物。通过紫外可见吸收和荧光光谱研究了它们在不同溶剂和固态下的光物理行为。观察到它们的荧光光谱在溶液中产生蓝至黄绿色发射,而在固态下发射黄至红色发射。尤其是,该复合物3b中显示的最强发射和最高量子效率(Φ û = 0.98)在这些配合物中的甲苯。复杂3b的CIE坐标处于固态时,其处于色度图的理想红色区域。这些配合物的最大发射显示出大的波长偏移,并且斯托克斯偏移随着溶剂极性的增加而增加。利用Lippert-Mataga方程也可以估算出基态和激发态之间的偶极矩差。同时,通过循环伏安法计算了它们的HOMO,LUMO能级和能带隙。