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基于苯并咪唑配体的铜(II)配合物作为用于嵌入金和银纳米颗粒的自由基聚合的新型光氧化还原催化剂。

Copper II Complexes Based on Benzimidazole Ligands as a Novel Photoredox Catalysis for Free Radical Polymerization Embedded Gold and Silver Nanoparticles.

作者信息

Alhomaidan Lama M, Tar Haja, Alnafisah Abrar S, Aroua Lotfi M, KouKi Noura, Alminderej Fahad M, Lalevee Jacques

机构信息

Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia.

Laboratory of Organic Structural Chemistry and Macromolecules, Department of Chemistry, Faculty of Sciences of Tunis, Tunis El-Manar University, El Manar I, Tunis 2092, Tunisia.

出版信息

Polymers (Basel). 2023 Mar 3;15(5):1289. doi: 10.3390/polym15051289.

Abstract

The copper II complex's novel benzimidazole Schiff base ligands were manufactured and gauged as a new photoredox catalyst/photoinitiator amalgamated with triethylamine (TEA) and iodonium salt (Iod) for the polymerization of ethylene glycol diacrylate while exposed to visible light by an LED Lamp at 405 nm with an intensity of 543 mW/cm at 28 °C. Gold and silver nanoparticles were obtained through the reactivity of the copper II complexes with amine/Iod salt. The size of NPs was around 1-30 nm. Lastly, the high performance of copper II complexes for photopolymerization containing nanoparticles is presented and examined. Ultimately, the photochemical mechanisms were observed using cyclic voltammetry. The preparation of the polymer nanocomposite nanoparticles in situ was photogenerated during the irradiation LED at 405 nm with an intensity of 543 mW/cm at 28 °C process. UV-Vis, FTIR, and TEM analyses were utilized for the determination of the generation of AuNPs and AgNPs which resided within the polymer matrix.

摘要

制备了铜(II)配合物的新型苯并咪唑席夫碱配体,并将其作为一种新型光氧化还原催化剂/光引发剂,与三乙胺(TEA)和碘鎓盐(Iod)混合,用于乙二醇二丙烯酸酯的聚合反应。在28℃下,通过405nm的LED灯在可见光照射下进行聚合反应,光强度为543mW/cm²。通过铜(II)配合物与胺/碘盐的反应制备了金和银纳米颗粒。纳米颗粒的尺寸约为1-30nm。最后,展示并研究了含纳米颗粒的铜(II)配合物在光聚合反应中的高性能。最终,使用循环伏安法观察光化学机理。在28℃下,通过强度为543mW/cm²的405nm LED灯照射过程中,原位光生成聚合物纳米复合纳米颗粒。利用紫外可见光谱(UV-Vis)、傅里叶变换红外光谱(FTIR)和透射电子显微镜(TEM)分析来确定存在于聚合物基质中的金纳米颗粒(AuNPs)和银纳米颗粒(AgNPs)的生成情况。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/38f3/10007263/a11ca6a13532/polymers-15-01289-sch001.jpg

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