Yuge Ryota, Zhang Minfang, Tomonari Mutsumi, Yoshitake Tsutomu, Iijima Sumio, Yudasaka Masako
Nano Electronics Research Laboratories, NEC Corporation, 34 Miyukigaoka, Tsukuba 305-8501, Japan.
ACS Nano. 2008 Sep 23;2(9):1865-70. doi: 10.1021/nn800352y.
Although chemical functionalization at carboxyl groups of nanocarbons has been vigorously investigated and the identities and quantities of the carboxyl groups have been well studied, the location of carboxyl groups had not previously been clarified. Here, we show that site identification of carboxyl groups is possible by using Pt-ammine complex as a stain. After Pt-ammine complexes were mixed with graphenes in ethanol, many Pt-ammine complex clusters with an average size of about 0.6 nm were found to exist at edges of graphene sheets, indicating that the carboxyl groups mainly existed at the graphene edges. These results will make it easier to add functionalities by chemical modifications for various applications of nanotubes and other nanocarbons.
尽管对纳米碳羧基上的化学功能化已进行了深入研究，且羧基的种类和数量也已得到充分研究，但羧基的位置此前尚未明确。在此，我们表明通过使用铂氨配合物作为染色剂可以实现羧基的位点识别。在乙醇中将铂氨配合物与石墨烯混合后，发现许多平均尺寸约为0.6纳米的铂氨配合物簇存在于石墨烯片的边缘，这表明羧基主要存在于石墨烯的边缘。这些结果将使通过化学修饰为纳米管和其他纳米碳的各种应用添加功能变得更加容易。
