Wei Dongwei, Qian Weiping, Shi Yi, Ding Shaohua, Xia Yan
State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, PR China.
Carbohydr Res. 2007 Nov 26;342(16):2494-9. doi: 10.1016/j.carres.2007.07.001. Epub 2007 Jul 13.
Single-crystal Au nanosheets with {111} planes as basal surfaces have been synthesized on the basis of the polysaccharide chitosan. The preferential adsorption of polar groups in chitosan molecules on {111} planes of Au nuclei may account for the formation of anisotropic nanosheets. Appropriate precursor (HAuCl(4)) concentrations are vital for the formation of Au nanosheets. The Au nanostructures thus prepared exhibit interesting shape-dependent optical properties. This convenient, environmentally friendly and low-cost route may be amenable to mass production.
以多糖壳聚糖为基础合成了具有{111}面作为基面的单晶金纳米片。壳聚糖分子中极性基团在金核{111}面上的优先吸附可能是各向异性纳米片形成的原因。合适的前驱体（HAuCl₄）浓度对于金纳米片的形成至关重要。如此制备的金纳米结构展现出有趣的形状依赖光学性质。这种便捷、环境友好且低成本的路线可能适合大规模生产。
