Key Laboratory of Forest Plant Ecology of Ministry of Education, Northeast Forestry University, Harbin, China.
Colloids Surf B Biointerfaces. 2010 Mar 1;76(1):311-6. doi: 10.1016/j.colsurfb.2009.11.010. Epub 2009 Dec 6.
L-Histidine capped single-crystalline gold nanoparticles have been synthesized by a hydrothermal process under a basic condition at temperature between 65 and 150 degrees C. The produced gold nanoparticles were spherical with average diameter of 11.5+/-2.9nm. The synthesized gold colloidal solution was very stable and can be stored at room temperature for more than 6 months. The color of the colloidal solution can change from wine red to mauve, purple and blue during the acidifying process. This color changing phenomenon is attributed to the aggregation of gold nanoparticles resulted from hydrogen bond formation between the histidines adsorbed on the gold nanoparticles surfaces. This hydrothermal synthetic method is expected to be used for synthesizing some other amino acid functionalized gold nanomaterials.
L-组氨酸封端的单晶金纳米粒子已经通过在 65 到 150 摄氏度之间的碱性条件下的水热过程合成。所得到的金纳米粒子为球形，平均直径为 11.5+/-2.9nm。所合成的金胶体溶液非常稳定，可以在室温下储存超过 6 个月。胶体溶液的颜色在酸化过程中可以从酒红色变为紫红色、紫色和蓝色。这种变色现象归因于金纳米粒子表面吸附的组氨酸之间氢键形成导致的金纳米粒子的聚集。这种水热合成方法有望用于合成一些其他的氨基酸功能化的金纳米材料。
