CNRS, Institut de Biologie Moléculaire et Cellulaire, Laboratoire d'Immunologie et Chimie Thérapeutiques, Strasbourg, France.
Chemistry. 2011 Jun 6;17(24):6772-80. doi: 10.1002/chem.201100312. Epub 2011 May 3.
Single-walled carbon nanotubes (SWCNTs) have been covalently functionalized with uracil nucleobase. The hybrids have been characterized by using complementary spectroscopic and microscopic techniques including solid-state NMR spectroscopy. The uracil-functionalized SWCNTs are able to self-assemble into regular nanorings with a diameter of 50-70 nm, as observed by AFM and TEM. AFM shows that the rings do not have a consistent height and thickness, which indicates that they may be formed by separate bundles of CNTs. The simplest model for the nanoring formation likely involves two bundles of CNTs interacting with each other via uracil-uracil base-pairing at both CNT ends. These nanorings can be envisaged for the development of advanced electronic circuits.
单壁碳纳米管 (SWCNTs) 已通过尿嘧啶核苷碱基进行共价功能化。使用互补的光谱和显微镜技术对混合物进行了表征，包括固态 NMR 光谱学。通过原子力显微镜 (AFM) 和透射电子显微镜 (TEM) 观察到，尿嘧啶功能化的 SWCNTs 能够自组装成直径为 50-70nm 的规则纳米环。AFM 表明，这些环没有一致的高度和厚度，这表明它们可能是由单独的 CNT 束形成的。纳米环形成的最简单模型可能涉及两个 CNT 束通过 CNT 两端的尿嘧啶-尿嘧啶碱基配对相互作用。这些纳米环可用于开发先进的电子电路。
