Comparison of polyampholyte derivative of chitosan with bisphthalimides of low molecular weight in the green synthesis of Au nanoparticles

IF 2.2 4区 工程技术 Q2 Chemistry Gold Bulletin Pub Date : 2022-02-15 DOI:10.1007/s13404-022-00310-2
Martín Caldera Villalobos, Miguel Ángel García Castro, Jesús García Serrano, Ana M. Herrera González
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引用次数: 1

Abstract

Abstract

This work reports the chemical modification of chitosan with phthalimide moieties and the synthesis of two bisphthalimides (BPIs) with low molecular weight useful in the green synthesis of Au nanoparticles. The polyampholyte derivative of chitosan was obtained in water while the two BPIs, N,N´-(1,3-phenylene)bis(phthalimide-5-carboxylic acid) (BPI-1) and N,N´-(1,4-phenylene)bis(phthalimide-5-carboxylic acid) (BPI-2) were obtained by solid state reaction without the use of organic solvents. The polyampholyte and two BPIs were soluble in water; therefore, they were used in the green synthesis of Au nanoparticles. The characterization of three compounds was made by FTIR and 1H NMR. TEM and UV–Vis results revealed that the compounds can reduce gold ions and stabilize Au nanoparticles in the colloidal solutions. The shape of the Au nanoparticles was quasi-spherical, while the average size of Au nanoparticles stabilized with the compounds BPI-1 and BPI-2 was 3 and 12 nm, respectively. Thus, with BPI-1 was obtained Au nanoparticles with lower size than BPI-2. Finally, the average size of nanoparticles stabilized with the polyampholyte was 10 nm. However, the faster reaction to obtain nanoparticles was with the polyampholyte derivative of chitosan (5 min), due to high quantity of oxidizable groups found in the polymer structure by its high molecular weight.

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壳聚糖聚两性衍生物与低分子量双酞亚胺绿色合成金纳米颗粒的比较
摘要本文报道了用邻苯二甲酸亚胺对壳聚糖进行化学改性,合成了两种低分子量的双苯二甲酸亚胺(bpi),可用于绿色合成金纳米颗粒。在水中得到壳聚糖的多两性衍生物,在不使用有机溶剂的情况下,通过固相反应得到N,N´-(1,3-苯基)双(邻苯二胺-5-羧酸)(BPI-1)和N,N´-(1,4-苯基)双(邻苯二胺-5-羧酸)(BPI-2)。聚两性聚合物和两种双酚类化合物均可溶于水;因此,它们被用于绿色合成金纳米颗粒。用FTIR和1H NMR对三个化合物进行了表征。TEM和UV-Vis结果表明,该化合物在胶体溶液中具有还原金离子和稳定金纳米粒子的作用。得到的Au纳米颗粒呈准球形,而BPI-1和BPI-2稳定的Au纳米颗粒的平均尺寸分别为3 nm和12 nm。因此,用BPI-1得到的金纳米颗粒比BPI-2小。最后,聚两性电解质稳定的纳米颗粒平均尺寸为10 nm。然而,由于高分子量的聚合物结构中含有大量的可氧化基团,壳聚糖的多两性衍生物反应速度更快(5分钟)。
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来源期刊
Gold Bulletin
Gold Bulletin 工程技术-材料科学:综合
CiteScore
3.30
自引率
4.50%
发文量
0
审稿时长
3 months
期刊介绍: Gold Bulletin is the premier international peer reviewed journal on the latest science, technology and applications of gold. It includes papers on the latest research advances, state-of-the-art reviews, conference reports, book reviews and highlights of patents and scientific literature. Gold Bulletin does not publish manuscripts covering the snthesis of Gold nanoparticles in the presence of plant extracts or other nature-derived extracts. Gold Bulletin has been published over 40 years as a multidisciplinary journal read by chemists, physicists, engineers, metallurgists, materials scientists, biotechnologists, surface scientists, and nanotechnologists amongst others, both within industry and academia. Gold Bulletin is published in Association with the World Gold Council.
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