Design and decorated gold nanoparticles over the Arabic gum-chitosan hydrogel polymers as a novel catalyst for Sonogashira coupling reactions

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry Pub Date : 2025-07-01 DOI:10.1016/j.jorganchem.2025.123762

Shaymaa Hussein Nowfal , Maher Ali Rusho , Nargiza Kamolova , Alejandro Pérez-Larios , Carlos Soto-Robles , Elangovan Muniyandy , Aseel Smerat , Osmin Áviles-García , Amir Ibrahim Ali Arab , Saiful Islam

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Abstract

This study introduces a novel approach for designing and synthesizing a hydrogel polymer template derived from Arabic gum-chitosan polysaccharides (AG-CS) to encapsulate gold nanoparticles, resulting in a unique bio-nanocomposite. The AG-CS hydrogel network was formed through hydrogen bonding and further providing a natural template that serves as a capping, reducing, and coating agent for the immobilization of gold nanoparticles (Arabic gum-CS/Au NPs). The successful formation of the Arabic gum-CS/Au NPs was confirmed using a range of advanced characterized techniques including, FE-SEM, TEM, EDX, ICP-OES, elemental mapping, and XRD. TEM images revealed that the gold nanoparticles were spherical in shape, monodispersed, and had an approximate size of 10–20 nm. Catalytic performance of the material was evaluated in the synthesis of various stilbene derivatives via Sonogashira coupling reactions with high yields. The catalyst exhibited no notable decrease in performance even after being used 8 times in a row.

Abstract Image

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在阿拉伯胶-壳聚糖水凝胶聚合物上设计并修饰金纳米颗粒作为Sonogashira偶联反应的新型催化剂

本研究介绍了一种设计和合成阿拉伯胶-壳聚糖多糖（AG-CS）水凝胶聚合物模板的新方法，以包封金纳米粒子，从而获得独特的生物纳米复合材料。AG-CS水凝胶网络是通过氢键形成的，并进一步提供了一种天然模板，作为固定金纳米颗粒（阿拉伯胶- cs /Au NPs）的封盖、还原和涂层剂。通过一系列先进的表征技术，包括FE-SEM、TEM、EDX、ICP-OES、元素映射和XRD，证实了阿拉伯胶- cs /Au NPs的成功形成。TEM图像显示，金纳米颗粒呈球形，单分散，尺寸约为10-20 nm。通过Sonogashira偶联反应，评价了该材料在高收率合成多种二苯乙烯衍生物中的催化性能。即使连续使用8次，催化剂的性能也没有明显下降。

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来源期刊

Journal of Organometallic Chemistry 化学-无机化学与核化学

CiteScore

4.40

自引率

8.70%

发文量

221

审稿时长

36 days

期刊介绍： The Journal of Organometallic Chemistry targets original papers dealing with theoretical aspects, structural chemistry, synthesis, physical and chemical properties (including reaction mechanisms), and practical applications of organometallic compounds. Organometallic compounds are defined as compounds that contain metal - carbon bonds. The term metal includes all alkali and alkaline earth metals, all transition metals and the lanthanides and actinides in the Periodic Table. Metalloids including the elements in Group 13 and the heavier members of the Groups 14 - 16 are also included. The term chemistry includes syntheses, characterizations and reaction chemistry of all such compounds. Research reports based on use of organometallic complexes in bioorganometallic chemistry, medicine, material sciences, homogeneous catalysis and energy conversion are also welcome. The scope of the journal has been enlarged to encompass important research on organometallic complexes in bioorganometallic chemistry and material sciences, and of heavier main group elements in organometallic chemistry. The journal also publishes review articles, short communications and notes.