Synthesis and study of binary and ternary selenium-containing nanodispersions based on amphiphilic molecular brushes and Photoditazine

IF 1.7 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Russian Chemical Bulletin Pub Date : 2025-09-12 DOI:10.1007/s11172-025-4725-0

S. V. Valueva, L. N. Borovikova, A. Ya. Volkov, E. L. Krasnopeeva, I. V. Ivanov, A. V. Yakimansky

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引用次数: 0

Abstract

Amphiphilic molecular brushes with a polyimide or cellulose main chain and polymethacrylic acid (PMAA) side chains, as well as binary and ternary selenium-containing nanodispersions based on these brushes and the photosensitizer Photoditazine (PD) were synthesized. A comparative study of graft copolymers (graft-CPs) with a polyimide or cellulose main chain (with a variable degree of polymerization of the PMAA side chains) and graft-CPs loaded with selenium nanoparticles (NPs) and PD was carried out using UV-Vis and luminescence spectroscopy and X-ray diffraction analysis (XRD). The influence of the structure and topology of the graft-CPs on the structural and spectral characteristics of both free amphiphilic molecular brushes and brushes loaded with selenium NPs and PD was determined. It is suggested that the formation of selenium-containing compositions is carried out mainly via the steric stabilization of selenium NPs with brush macromolecules and the incorporation of selenium NPs similar to the case of metal-porphyrin complexes. Based on the results of spectroscopy in the UV-Vis region, the band gap energies and the diameters of the selenium NPs were calculated for binary and ternary systems. Luminescence quantum yields were determined for ternary systems.

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基于两亲性分子刷和光二嗪的二元和三元含硒纳米分散体的合成与研究

合成了以聚酰亚胺或纤维素为主链，以聚甲基丙烯酸（PMAA）为侧链的两亲性分子刷，以及基于这些分子刷和光敏剂photodiazine （PD）的二元和三元含硒纳米分散体。利用紫外可见光谱、发光光谱和x射线衍射分析（XRD），对以聚酰亚胺或纤维素为主链（PMAA侧链聚合程度不同）的接枝共聚物（graft- cps）和负载纳米硒（NPs）和PD的接枝共聚物（graft- cps）进行了比较研究。研究了接枝cps的结构和拓扑结构对自由两亲分子刷和负载硒NPs和PD的刷的结构和光谱特性的影响。结果表明，含硒组合物的形成主要是通过硒NPs与刷状大分子的空间稳定和硒NPs的结合进行的，类似于金属-卟啉配合物的情况。根据紫外可见光谱的结果，计算了二元和三元体系中硒纳米粒子的带隙能和直径。测定了三元体系的发光量子产率。

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来源期刊

Russian Chemical Bulletin 化学-化学综合

CiteScore

2.70

自引率

47.10%

发文量

257

审稿时长

3-8 weeks

期刊介绍： Publishing nearly 500 original articles a year, by leading Scientists from Russia and throughout the world, Russian Chemical Bulletin is a prominent international journal. The coverage of the journal spans practically all areas of fundamental chemical research and is presented in five sections: General and Inorganic Chemistry; Physical Chemistry; Organic Chemistry; Organometallic Chemistry; Chemistry of Natural Compounds and Bioorganic Chemistry.