Novel luminescent starch nanoparticles are obtained by first grafting the Eu(TTA)₃Phen‐NH₂ complex (Eu, europium; TTA, 2‐thenoyltrifluoracetonato; Phen, 1,10‐phenanthroline) onto octenyl succinic anhydride (OSA)‐modified corn starch and then using a nanoprecipitation method. The changes in the Fourier transform infrared spectra show that the Eu complex is grafted onto the OSA‐starch via amide bond formation. Transmission electron microscopy images show nanoparticles of irregular shape, with sizes in the range 35–270 nm. Eu complex‐grafted OSA‐starch nanoparticles (EuC‐OSA‐St‐NPs) exhibit red luminescence emission with long luminescence lifetimes. Their good biocompatibility supports their use for biomedical applications.

中文翻译：

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发光Euro复合物接枝的辛烯基琥珀酰化淀粉纳米粒子

首先将Eu（TTA）₃ Phen-NH ₂络合物（Eu，;; TTA，2-thenoyltrifluoracetonato; Phen，1,10-菲咯啉）接枝到辛烯基琥珀酸酐（OSA）改性的玉米淀粉上，得到新型的发光淀粉纳米颗粒然后使用纳米沉淀法 傅立叶变换红外光谱的变化表明，Eu络合物通过酰胺键形成被嫁接到OSA淀粉上。透射电子显微镜图像显示不规则形状的纳米颗粒，尺寸在35–270 nm之间。Eu复合物接枝的OSA淀粉纳米颗粒（EuC-OSA-St-NPs）呈现红色发光，发光寿命长。它们良好的生物相容性支持它们在生物医学应用中的使用。