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Selenium-containing Nanosystems based on Amphiphilic Molecular Brushes with a Variable Degree of Polymerization of the Side Chains in Aqueous and Organic Media
Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2021-04-21 , DOI: 10.1134/s1027451021020336
S. V. Valueva , M. E. Vylegzhanina , K. A. Mitusova , A. Ya. Volkov , T. K. Meleshko , I. V. Ivanov , A. V. Yakimansky

Abstract

A comparative study of nanosystems based on the biogenic element selenium in the zero-valent form (Se0) and amphiphilic molecular brushes (graft-CP) with a hydrophobic polyimide backbone and hydrophilic side chains of polymethacrylic acid is performed using atomic force microscope, UV-vis spectroscopy, and dynamic light scattering. It is shown that the morphological and spectral characteristics of Se0/graft-CP nanostructures can be controlled by varying the degree of polymerization m of the side chains of amphiphilic molecular brushes. The effect of the nature of the solvent (water, dimethylformamide, and chloroform) on the morphology of thin graft-SP films on mica is shown by the example of a free (not loaded with Se0 nanoparticles) amphiphilic molecular brush of graft-SP with a specified degree of polymerization of the side chains (m = 270).



中文翻译:

基于两亲性分子刷的含硒纳米系统,在水和有机介质中侧链的聚合度可变

摘要

使用原子力显微镜,紫外线对基于零价形式生物元素硒(Se 0)和具有疏水性聚酰亚胺主链和聚甲基丙烯酸亲水性侧链的两亲性分子刷(graft-CP)进行的纳米系统的比较研究可见光谱和动态光散射。结果表明,通过改变两亲性分子刷侧链的聚合度m,可以控制Se 0 /接枝-CP纳米结构的形貌和光谱特征。游离(未添加Se 0)的例子显示了溶剂(水,二甲基甲酰胺和氯仿)的性质对云母上接枝SP薄膜的形态的影响。纳米颗粒)接枝SP的两亲分子刷,具有规定的侧链聚合度(m = 270)。

更新日期:2021-04-21
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