Monodisperse water-soluble Fe-Ni nanoparticles for magnetic resonance imaging

Hong Yang; Xuejian Li; Hong Zhou

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Monodisperse water-soluble Fe-Ni nanoparticles for magnetic resonance imaging

机译：用于磁共振成像的单分散水溶性Fe-Ni纳米粒子

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Monodispersed Fe-Ni nanoparticles (NPs) with the diameter around 9 nm were synthesized by high temperature pyrolysis of iron(III) acetylacetonate and nickei(II) acetylacetonate. Ligand exchange method with a bifunctional bisphosphonate was adopted to improve the water solubility. To prevent their bio-fouling and aggregate in the biological system, the prepared NPs were further covalent conjugated with the PEG acid. Their morphology and structure were confirmed by TEM, XRD and FTIR. NPs showed good magnetic properties with the saturation magnetization (Ms) of about 40 emu/g and the transverse relax-ivity (r_2) of about 43.1 mlVM s_1 in aqueous solutions. Furthermore, Fe-Ni NPs showed low cytotoxicity in living cells. They can be uptaken by HeLa cells effectively and result in the obvious effect of T_2 -weighted MRI of labeled cells after internalization, making them potential contrast agents for MRI study.

机译：通过对乙酰丙酮铁（III）和乙酰丙酮镍（II）进行高温热解，合成了直径约9 nm的单分散Fe-Ni纳米粒子（NPs）。采用双官能双膦酸酯的配体交换方法来改善水溶性。为了防止它们的生物结垢和在生物系统中聚集，将制备的NP进一步与PEG酸共价缀合。通过TEM，XRD和FTIR证实了它们的形态和结构。 NPs表现出良好的磁性能，在水溶液中的饱和磁化强度（Ms）约为40 emu / g，横向弛豫率（r_2）约为43.1 mlVM s_1。此外，Fe-Ni NP在活细胞中显示出低细胞毒性。它们可以被HeLa细胞有效摄取，并在内化后对标记细胞产生T_2加权MRI的明显效果，使其成为MRI研究的潜在造影剂。

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《Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics》 |2011年第4期|共5页
作者
Hong Yang; Xuejian Li; Hong Zhou;
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正文语种 eng
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MRI; Fe-Ni nanoparticles; Transverse relaxivity; Cytotoxicity;

机译：核磁共振;铁镍纳米颗粒;横向弛豫;细胞毒性;

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1. Monodisperse water-soluble Fe-Ni nanoparticles for magnetic resonance imaging [J] . Hong Yang, Xuejian Li, Hong Zhou Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics . 2011,第4期

机译：用于磁共振成像的单分散水溶性Fe-Ni纳米粒子
2. Monodisperse water-soluble magnetite nanoparticles prepared by polyol process for high-performance magnetic resonance imaging [J] . Jiaqi Wan, Wei Cai, Xiangxi Meng, Chemical Communications . 2007,第47期

机译：多元醇法制备的高性能磁共振成像单分散水溶性磁铁矿纳米粒子
3. Development of water-soluble curcumin grafted magnetic nanoparticles for enhancing bioavailability, fluorescence, and magnetic resonance imaging activity [J] . Periyathambi Prabu, Hemalatha Thiagarajan Materials Letters . 2021,第Jula1期

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4. Chemical synthesis of monodisperse γ-Fe-Ni magnetic nanoparticles with tunable Curie temperatures for self-regulated hyperthermia [C] . K. L McNerny, Y. Kim, D. E. Laughlin Joint MMM-Intermag Conference . 2010

机译：单分散γ-Fe-Ni磁性纳米粒子的化学合成具有可调谐居里温度的自控热疗
5. Complimentary Approaches to Sensitivity Enhancement in Magnetic Resonance Imaging: Active Feedback Enhanced Imaging and Magnetic Resonance-Functionalized Supramolecular Nanoparticles. [D] . Wolahan, Stephanie M. 2011

机译：磁共振成像中增强感光度的补充方法：主动反馈增强成像和磁共振功能超分子纳米粒子。
6. Ultrasmall Water-Soluble Magnetite Nanoparticles with High Relaxivity for Magnetic Resonance Imaging [O] . Fengqin Hu, Keith W. MacRenaris, Emily A. Waters, -1

机译：超小型水溶性磁性纳米粒子具有高弛豫磁共振成像
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Monodisperse water-soluble Fe-Ni nanoparticles for magnetic resonance imaging

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