Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Tokyo 113-0033, Japan.
J Am Chem Soc. 2013 Feb 20;135(7):2462-5. doi: 10.1021/ja312380b. Epub 2013 Feb 5.
A π-conjugated nanosheet comprising planar nickel bis(dithiolene) complexes was synthesized by a bottom-up method. A liquid-liquid interfacial reaction using benzenehexathiol in the organic phase and nickel(II) acetate in the aqueous phase produced a semiconducting bulk material with a thickness of several micrometers. Powder X-ray diffraction analysis revealed that the crystalline portion of the bulk material comprised a staggered stack of nanosheets. A single-layer nanosheet was successfully realized using a gas-liquid interfacial reaction. Atomic force microscopy and scanning tunneling microscopy confirmed that the π-conjugated nanosheet was single-layered. Modulation of the oxidation state of the nanosheet was possible using chemical redox reactions.
通过自下而上的方法合成了由平面镍双二硫烯配合物组成的π共轭纳米片。使用苯六硫醇在有机相和乙酸镍在水相的液-液界面反应，生成具有几微米厚度的半导体块状材料。粉末 X 射线衍射分析表明，块状材料的晶区由交错堆叠的纳米片组成。使用气-液界面反应成功实现了单层纳米片。原子力显微镜和扫描隧道显微镜证实了π共轭纳米片为单层。通过化学氧化还原反应可以调节纳米片的氧化态。
