Can Carbon Nanotubes be Considered Useful Tools for Biological Applications?

Carbon nanotubes can be made soluble in both organic solvents and in aqueous solutions by organic functionalization. In particular, soluble carbon nanotubes can be further derivatized by coupling with amino acids and bioactive peptides. Immobilization of peptides to the external walls of carbon nanotubes may find interesting applications in diagnostics, vaccine and drug delivery, or multipresentation of bioactive molecules.     

Nickel Oxide/Carbon Nanotubes Nanocomposite for Electrochemical Capacitance

A nanocomposite of nickel oxide/carbon nanotubes was prepared through a simple chemical precipitation followed by thermal annealing. The electrochemical capacitance of this electrode material was studied. When the mass fraction of CNTs (carbon nanotubes) in NiO/CNT composites increases, the electrical resistivity of nanocomposites decreases and becomes similar to that of pure CNTs when it reaches 30%. The specific surface area of composites increases with increasing CNT mass fraction and the specific capacitance reaches 160 F/g under 10 mA/g discharge current density at CNT mass fraction of 10%.     

Cover Picture: Dynamic Imaging of Functionalized Multi‐Walled Carbon Nanotube Systemic Circulation and Urinary Excretion (Adv. Mater. 2/2008)

Multiwalled carbon nanotubes (MWNTs) made highly water‐dispersible by organic functionalization and radiolabeled with Indium‐111 were shown to translocate through the kidney glomerular filter. On p. 225, multinational, multicenter research led by Kostas Kostarelos on dynamic imaging and tissue distribution of MWNTs in live animals is presented. The cover image presents a single plane single photon computed tomography whole body image of a rat following intravenous injection with the In‐111 labeled MWNTs as seen through a 3D carbon NT projection. The radioactivity from carbon NTs was mainly localized in the kidneys, and accumulated in the bladder before clearance in the urine.     

碳纳米管的绿色高效功能化修饰

碳纳米管的功能化修饰为其应用研究奠定了基础。介绍了基于高效、节能、环境友好化学反应的碳纳米管功能化的新方法和新进展，包括以水、离子试剂作为溶剂和不使用有机溶剂的绿色功能化方法，以及应用超声波、微波辐射等技术的快速功能化过程，并对今后的研究方向进行了展望。     

双壁碳纳米管研究进展

单壁碳纳米管和多壁碳纳米管的合成和应用研究得到广泛的关注和重视，并已取得了许多令人鼓舞的成果。双壁碳纳米管(DWCNTs)作为介于单壁碳纳米管和多壁碳纳米管之间的一种特殊结构碳纳米管，由于潜在的应用价值及作为研究碳纳米管层间作用最简单和理想的模型开始得到高度重视。介绍了双壁碳纳米管合成方法及理论和应用研究取得的进展。     

碳纳米管储氢

近年来,碳纳米管由于其独特的力学、电学等性能以及在众多方面的潜在应用,越来越受到世界各国科学家的关注.最近,碳纳米管由于其大表面积和中空的结构,被应用于氢气储存.本文介绍了该领域最新的一些研究结果     

Carbon Nanotubes Anchored to Silicon for Device Fabrication

This report highlights recent progress in the fabrication of vertically aligned carbon nanotubes (VA‐CNTs) on silicon‐based materials. Research into these nanostructured composite materials is spurred by the importance of silicon as a basis for most current devices and the disruptive properties of CNTs. Various CNT attachments methods of covalent and adsorptive nature are critically compared. Selected examples of device applications where the VA‐CNT on silicon assemblies are showing particular promise are discussed. These applications include field emitters, filtration membranes, dry adhesives, sensors and scaffolds for biointerfaces.

     

稀土酞菁化学修饰竹节状的多壁碳纳米管

采用氨基稀土酞菁与纯化的竹节状碳纳米管发生酰胺反应的方法制备了稀土酞菁化学修饰的碳纳米管,并采用红外吸收光谱和热分析方法对产物的化学结构进行了表征,证明了复合体系中酰胺反应的发生.紫外可见光谱分析表明稀土酞菁与碳纳米管间存在强烈的电子相互作用.通过透射电镜观察化学修饰后的碳纳米管的形貌特征时,发现稀土酞菁大多呈竹节状分布在碳管壁上,其原因是由于竹节状碳管的结构特征和化学修饰的选择性造成的.