Uniformly sized and shaped gold nanoparticles (AuNP) were produced by microwave irradiation using Euphorbia tirucalli latex. The AuNPs were characterized by ultraviolet visible spectroscopy (UV–Vis), Fourier transform infrared spectroscopy (FTIR), dynamic light scattering, zeta potential, and transmission electron microscopy (TEM). UV–Vis analysis was employed to detect the characteristic surface plasmon resonance pattern of the AuNPs (550 nm). The carboxylic and polyphenolic groups were associated with the euphol-capped AuNP, which was confirmed using FTIR spectroscopy. The AuNPs studied here show a z-average diameter varying from 35 to 500 ± 0.8 nm. TEM reveals that the particles were spherical and polydispersed. The latex itself is very toxic and can be harmful during manipulation, thus highlighting a negative aspect in it use. However, we have demonstrated that the isolation procedure did not impair the reduction action of the dry latex powder. This study provides a robust solution for the synthesis of stable capped gold nanoparticles. Furthermore, the dried powdered E. tirucalli latex seems to be an attractive capping agent for nanoparticles in drug delivery.

中文翻译：

---

使用大戟胶乳和微波法合成金纳米粒子

使用 Euphorbia tirucalli 乳胶通过微波辐射制备均匀大小和形状的金纳米粒子 (AuNP)。AuNPs 通过紫外可见光谱 (UV-Vis)、傅里叶变换红外光谱 (FTIR)、动态光散射、zeta 电位和透射电子显微镜 (TEM) 进行表征。UV-Vis 分析用于检测 AuNPs (550 nm) 的特征表面等离子体共振模式。羧基和多酚基团与丁醇封端的 AuNP 相关联，这通过 FTIR 光谱得到证实。此处研究的 AuNP 显示 z 平均直径从 35 到 500 ± 0.8 nm 不等。TEM 表明颗粒是球形的并且是多分散的。乳胶本身是非常有毒的，在操作过程中可能是有害的，因此突出了它使用中的负面影响。然而，我们已经证明隔离程序不会削​​弱干乳胶粉的还原作用。该研究为合成稳定的封端金纳米粒子提供了可靠的解决方案。此外，干燥的粉状 E. tirucalli 乳胶似乎是药物递送中纳米颗粒的有吸引力的封端剂。