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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Cyclic Phosphazenes for the Surface Modification of Lanthanide Phosphate-based Nanoparticles
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Cyclic Phosphazenes for the Surface Modification of Lanthanide Phosphate-based Nanoparticles

机译：环磷酰胺用于磷酸镧系元素纳米粒子的表面改性

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摘要

Cyclic phosphazenes with positively charged substituents were investigated as surface modifiers for lanthanide phosphate nanoparticles. Cyclotriphosphazenes bearing aromatic (1, 2) and aliphatic (3-6) substituents With terminal tertiary amino functions have been synthesized and subsequently quaternized by treatment with metlyl iodide. In subsequent tests, their influence as surface modifiers for the lanthanide phosphate-based nanoparticles Was analysed with respect 10 the resulting particle solubility and the degree Of surface interaction. While an interaction of the completely quaternized cyclic phosphazenes 2 and 4 with the nanoparticles leads to an agglomeration. stable nanocrystal-linker complexes in methanol could be formed with the compounds 5 and 6. Aromatic function,, were riot suitable due to interference with the UV absorbance of the nanocrystals. while aliphatic side chains allowed a good fluorescence detection of the nanocrystals with UN, excitation without any loss of intensity as compared to the Untreated particles.
机译：研究了带有正电荷取代基的环磷腈作为磷酸镧系元素纳米粒子的表面改性剂。带有末端叔氨基官能团的带有芳族（1、2）和脂族（3-6）取代基的环三磷腈已经合成，随后通过碘代甲烷处理进行季铵化。在随后的测试中，相对于所得的粒子溶解度和表面相互作用程度，分析了它们作为磷酸镧系元素纳米粒子的表面改性剂的影响。虽然完全季铵化的环状磷腈2和4与纳米颗粒的相互作用导致团聚。可以与化合物5和6形成在甲醇中稳定的纳米晶-接头复合物。由于干扰了纳米晶的UV吸收，芳族化合物具有良好的防暴性能。而脂肪族侧链则允许对未经UN的纳米晶体进行良好的荧光检测，与未处理的颗粒相比，激发没有任何强度损失。

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