Solvent Effects on Growth, Crystallinity, and Surface Bonding of Ge Nanoparticles
Solvent Effects on Growth, Crystallinity, and Surface Bonding of Ge Nanoparticles
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DOI：
10.1021/acs.inorgchem.8b00334
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发表时间：
2018-05-07
影响因子：
4.6
通讯作者：
Kauzlarich, Susan M.
中科院分区：
文献类型：
--
作者：
Bernard, Andrew;Zhang, Keye;Kauzlarich, Susan M.
介绍了微波辅助合成锗纳米粒子的溶剂效应。油胺和1-十二碳烯的混合物用作反应溶剂。油胺在合成中充当还原剂，而两种分子充当结合配体。发现溶剂混合物中1-十二碳烯的浓度增加会增加所形成的纳米颗粒的尺寸。结晶度也取决于溶剂混合物。在较低的1-十二碳烯浓度下获得无定形纳米颗粒，而在较高的浓度下，颗粒含有结晶和无定形域。合成11-甲氧基十一碳-1-烯以替代反应混合物中的1-十二碳烯用于核磁共振（NMR）研究。反应产物的H-1 NMR表明，体系中的两种溶剂分子在纳米颗粒表面上充当结合配体。纳米粒子的特征在于使用粉末X射线衍射，扫描透射电子显微镜，和光谱技术（拉曼，紫外维斯，FT-IR，和NMR）。
Solvent effects on the microwave-assisted synthesis of germanium nanoparticles are presented. A mixture of oleylamine and 1-dodecene was used as the reaction solvent. Oleylamine serves as a reducing agent in the synthesis while both molecules act as binding ligands. Increased concentrations of 1-dodecene in the solvent mixture were found to increase the size of the formed nanoparticles. Crystallinity was also dependent on the solvent mixture. Amorphous nanoparticles were obtained at lower 1-dodecene concentrations, whereas, at higher concentrations, particles contained crystalline and amorphous domains. 11-Methoxyundec-1-ene was synthesized to replace 1-dodecene in the reaction mixture for nuclear magnetic resonance (NMR) studies. H-1 NMR of the reaction products shows that both solvent molecules in the system act as binding ligands on the nanoparticle surface. Nanoparticles were characterized using powder X-ray diffraction, scanning transmission electron microscopy, and spectroscopy techniques (Raman, UV vis, FT-IR, and NMR).