Aminophosphines as Versatile Precursors for the Synthesis of Metal Phosphide Nanocrystals,Chemistry of Materials

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Aminophosphines as Versatile Precursors for the Synthesis of Metal Phosphide Nanocrystals
Chemistry of Materials ( IF 7.2 ) Pub Date : 2018-07-07 00:00:00 , DOI: 10.1021/acs.chemmater.8b02206
M. Elizabeth Mundy ₁ , David Ung ₁ , Nathan L. Lai ₁ , Evan P. Jahrman ₂ , Gerald T. Seidler ₂ , Brandi M. Cossairt ₁

Affiliation

We have broadened the scope of the aminophosphine precursor chemistry that has been developed for InP quantum dots to the synthesis of cadmium, zinc, cobalt, and nickel phosphide nanocrystals. The generalized synthetic conditions involve thermolysis of the appropriate MX₂ salt with tris-diethylaminophosphine in a long chain primary amine. The resulting Cd₃P₂ nanocrystals exhibit size tuning effects based on the metal halide reactivity. ³¹P NMR studies show that the II-V materials form via the previously described mechanism observed for InP, demonstrating the invariance of this chemistry to the metal valence. We also demonstrate that electrocatalytically active transition metal phosphides, specifically Co₂P, CoP, and Ni₂P, can be produced using this synthetic method at relatively mild temperatures and in high yields.

中文翻译：

氨基膦作为金属磷化物纳米晶体合成的通用前体

我们已经将为InP量子点开发的氨基膦前体化学的范围扩展到了镉，锌，钴和磷化镍纳米晶体的合成。一般的合成条件包括在长链伯胺中将适当的MX ₂盐与三-二乙氨基膦进行热解。所得的Cd ₃ P ₂纳米晶体显示出基于金属卤化物反应性的尺寸调节效果。³¹ P NMR研究表明，II-V物质是通过先前描述的InP机理形成的，证明了该化学性质对金属化合价的不变性。我们还证明了电催化活性过渡金属磷化物，特别是Co ₂P，警察，和Ni ₂ P，可使用该合成方法在相对温和的温度和高的产率来制备。

更新日期：2018-07-07

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