DNA离子凝胶的分级自组装：γ辐射对凝胶性能的影响

Q4 Materials Science

Journal of Surface Science and Technology Pub Date : 2023-02-15 DOI:10.18311/jsst/2021/26297

P. Pandey, Kamla Rawat, H. Bohidar

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引用次数: 0

摘要

通过在低能γ辐照的DNA溶液样品上添加1-乙基-3-甲基咪唑鎓氯化物制备的DNA离子凝胶揭示了非平凡的自组装。二次结构和低频凝胶刚度模量G0的变化捕捉到了这些凝胶迄今为止尚未探索的独特特征。有趣的是，在较高的辐射剂量（0-100Gy）下，样品可能会部分失去其初始硬度。动态光散射揭示了与遍历性破坏时间相对应的剂量依赖性弛豫动力学。粘度和流变学表明，凝胶化时间tgel、凝胶化温度tgel和凝胶化强度G0与γ射线剂量有关。DNA离子凝胶随温度的熔化显示出这种生物材料的自组装特性。电离辐射处理的DNA链的凝胶动力学已经在文献中进行了研究。

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Hierarchical Self-Assembly in DNA Ionogel: Effect of γ-Radiation on Gel Properties

DNA ionogels prepared by adding 1-ethyl-3-methylimidazolium chloride on low energy gamma irradiated DNA solution samples reveal non-trivial self-assembly. Variations in secondary structure and low-frequency gel rigidity modulus G0 captured this unique hitherto unexplored features of these gels. Interestingly, at higher radiation dose (0 to 100 Gy) samples could partially lose their initial rigidity. Dynamic light scattering revels dose dependent relaxation dynamics corresponding to ergodicity breaking time. In particular, viscosity and rheology showed that the time of gelation tgel, temperature of gelation Tgel and strength of gelation G0 are gamma ray dose dependent. DNA Ionogel melting with temperature shows self-assembled characteristics of this biomaterial. Gelation kinetics of ionizing radiation treated DNA strands have been studied in literature.

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来源期刊

Journal of Surface Science and Technology PHYSICS, APPLIED-

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0.00%

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期刊介绍： The Indian Society for Surface Science and Technology is an organization for the cultivation, interaction and dissemination of knowledge in the field of surface science and technology. It also strives to promote Industry-Academia interaction