Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, 250100, Jinan, People's Republic of China.
Nanoscale Res Lett. 2009 Nov 13;5(2):302-7. doi: 10.1007/s11671-009-9480-x.
Water-solublel-arginine-capped Fe3O4 nanoparticles were synthesized using a one-pot and green method. Nontoxic, renewable and inexpensive reagents including FeCl3,l-arginine, glycerol and water were chosen as raw materials. Fe3O4 nanoparticles show different dispersive states in acidic and alkaline solutions for the two distinct forms of surface bindingl-arginine. Powder X-ray diffraction and X-ray photoelectron spectroscopy were used to identify the structure of Fe3O4 nanocrystals. The products behave like superparamagnetism at room temperature with saturation magnetization of 49.9 emu g-1 and negligible remanence or coercivity. In the presence of 1-ethyl-3-(dimethylaminopropyl) carbodiimide hydrochloride, the anti-chloramphenicol monoclonal antibodies were connected to thel-arginine-capped magnetite nanoparticles. The as-prepared conjugates could be used in immunomagnetic assay.(See supplementary material 1).
采用一锅法和绿色方法合成了水溶性 l-精氨酸封端的 Fe3O4 纳米粒子。选用无毒、可再生且廉价的试剂包括 FeCl3、l-精氨酸、甘油和水作为原料。Fe3O4 纳米粒子在酸性和碱性溶液中呈现出不同的分散状态，这是由于两种不同形式的表面结合 l-精氨酸所致。粉末 X 射线衍射和 X 射线光电子能谱用于鉴定 Fe3O4 纳米晶的结构。在室温下，产物表现出超顺磁性，饱和磁化强度为 49.9 emu g-1，剩余磁化强度和矫顽力可忽略不计。在 1-乙基-3-(二甲基氨基丙基)碳二亚胺盐酸盐的存在下，氯霉素单克隆抗体被连接到 l-精氨酸封端的磁铁矿纳米粒子上。所制备的缀合物可用于免疫磁测定。（见补充材料 1）。
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