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借助原子力显微镜对离子互补型自组装寡肽EAK16-II在水溶液中自组装聚集形态受紫外线的影响进行了研究.研究结果表明,紫外线改变了该类寡肽在水溶液中自组装形成的纳米结构.当用波长为365 nm的紫外线照射2 h后,离子互补型自组装寡肽的聚集态从纤维状结构转变为球形结构.从成核模型分析,其原因是由于紫外线照射导致了自组装聚集体分子间作用力的破坏以及β片层向β转角的转变.
The atomic force microscope (SEM) was used to study the effect of ultraviolet light on the self-assembly and aggregation of ion-complementary oligopeptide EAK16-II in aqueous solution, and the results showed that ultraviolet light changed the nanostructures formed by self-assembly of these oligopeptides in aqueous solution. When irradiated with UV light with a wavelength of 365 nm for 2 h, the aggregation state of the ion-complementary self-assembling oligopeptides changes from a fibrous structure to a spherical structure. From the nucleation model analysis, the reason for the aggregation state is that the self-assembled aggregates The destruction of intermolecular forces and the transformation of β sheet to β-turn.