Synthesis and solvent driven self-aggregation studies of meso-“C-glycoside”-porphyrin derivatives
作者:Petr Štěpánek、Mykhaylo Dukh、David Šaman、Jitka Moravcová、Ladislav Kniežo、Donato Monti、Mariano Venanzi、Giovanna Mancini、Pavel Drašar
DOI:10.1039/b616096d
日期:——
New types of porphyrin derivatives bearing âC-glycosideâ moieties, either in 5,10,15,20- or in 5,15-meso-positions, were prepared and fully characterized. The presence of the glycosidic groups imparts to the title macrocycles, besides an amphiphilic character, a clear tendency to form chiral suprastructures upon solvent-driven self-aggregation in different aqueousâorganic solvent mixtures. Supra-assembly phenomena, in terms of the size and morphology of the resulting structures, as well as their kinetics of aggregation, were studied by UV-visible, fluorescence, resonance light scattering (RLS), and CD spectroscopy, indicating that the morphology of the aggregates depends strongly on the structure of the porphyrin rings, and on the bulk conditions of aggregation.
研究人员制备了带有 "C-糖苷 "分子的新型卟啉衍生物,这些衍生物有的具有 5、10、15、20 位,有的具有 5、15 位。糖苷基团的存在除了赋予标题大环以两亲性特征外,还使其在不同的水性有机溶剂混合物中进行溶剂驱动的自聚集时,明显倾向于形成手性超结构。通过紫外-可见光、荧光、共振光散射(RLS)和 CD 光谱研究了超聚集现象,包括所形成结构的大小和形态以及聚集动力学,结果表明聚集体的形态在很大程度上取决于卟啉环的结构以及聚集的主体条件。