Materials Science and Engineering Department and Solar and Photovoltaic Engineering Research Centre, King Abdullah University of Science and Technology, 4700 Thuwal 23955-6900 (Saudi Arabia).
Angew Chem Int Ed Engl. 2014 Jan 7;53(2):420-3. doi: 10.1002/anie.201308429. Epub 2013 Dec 18.
A facile and low cost method for the synthesis of self-assembled nanoparticles (NPs) with minimal size variation and chemical waste by using reactive inkjet printing was developed. Gold NPs with diameters as small as (8±2) nm can be made at low temperature (120 °C). The size of the resulting NPs can be readily controlled through the concentration of the gold precursor and oleylamine ink. The pure gold composition of the synthesized NPs was confirmed by energy-dispersive X-ray spectroscopy (EDXS) analysis. High-resolution SEM (HRSEM) and TEM (HRTEM), and X-ray diffraction revealed their size and face-centered cubic (fcc) crystal structure, respectively. Owing to the high density of the NP film, UV/Vis spectroscopy showed a red shift in the intrinsic plasmonic resonance peak. We envision the extension of this approach to the synthesis of other nanomaterials and the production of tailored functional nanomaterials and devices.
我们开发了一种通过反应式喷墨打印，以最小的尺寸变化和化学废物，简便且低成本地合成自组装纳米颗粒（NPs）的方法。在低温（120°C）下，可以制备出直径小至（8±2）nm 的金 NPs。通过控制金前驱体和油胺墨水的浓度，可以很容易地控制所得 NPs 的尺寸。通过能谱分析（EDXS）确认了合成 NPs 的纯金组成。高分辨率扫描电子显微镜（HRSEM）和透射电子显微镜（HRTEM）以及 X 射线衍射分别揭示了它们的尺寸和面心立方（fcc）晶体结构。由于 NP 薄膜的高密度，紫外/可见光谱显示出本征等离子体共振峰的红移。我们期望将这种方法扩展到其他纳米材料的合成以及定制功能纳米材料和器件的生产。
