Control of PbSe nanorod aspect ratio by limiting phosphine hydrolysis.
Control of PbSe nanorod aspect ratio by limiting phosphine hydrolysis.
复制标题
通过限制磷化氢水解控制 PbSe 纳米棒长宽比。
DOI：
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发表时间：
2013
影响因子：
15
通讯作者：
J. Tischler
中科院分区：
文献类型：
--
作者：
J. Boercker;E. Foos;D. Placencia;J. Tischler
通过油酸铅与三（二乙基氨基）硒化膦的反应合成的PbSe纳米棒的长径比和产率对水的存在高度敏感，使得控制反应中存在的水量至关重要。通过小心地干燥反应前体，然后有意地将水添加回反应中，可以通过将水浓度从0变化到204 mM来将纳米棒纵横比从1.1控制到10并且将产率从1控制到14%。（31）P{（1）H}和（1）H NMR显示水与三（二乙基氨基）膦反应以产生双（二乙基氨基）亚磷酸。确定双（二乙基氨基）亚磷酸是观察到的纵横比和产率变化的原因。最后，发现反应中过量的油酸也可以与三（二乙基氨基）膦反应以产生双（二乙基氨基）亚磷酸，并且在除去过量的油酸和水之后，形成高度均匀的非支化纳米棒。
The aspect ratio and yield of PbSe nanorods synthesized by the reaction of Pb-oleate with tris(diethylamino)phosphine selenide are highly sensitive to the presence of water, making it critical to control the amount of water present in the reaction. By carefully drying the reaction precursors and then intentionally adding water back into the reaction, the nanorod aspect ratio can be controlled from 1.1 to 10 and the yield from 1 to 14% by varying the water concentration from 0 to 204 mM. (31)P{(1)H} and (1)H NMR show that water reacts with tris(diethylamino)phosphine to create bis(diethylamido)phosphorous acid. It was determined that bis(diethylamido)phosphorous acid is responsible for the observed aspect ratio and yield changes. Finally, it was found that excess oleic acid in the reaction can also react with tris(diethylamino)phosphine to create bis(diethylamido)phosphorous acid, and upon the removal of both excess oleic acid and water, highly uniform, nonbranching nanorods were formed.
影响因子：
15
作者：
Evans, Christopher M.;Evans, Meagan E.;Krauss, Todd D.
通讯作者：
Krauss, Todd D.