Functionalization of multi-walled carbon nanotubes via surface unpaired electrons. 2010

Haijiao Zhang, and Huijiao Guo, and Xiaoyong Deng, and Ping Gu, and Zhiwen Chen, and Zheng Jiao
Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, People's Republic of China.

The unpaired electrons on multi-walled carbon nanotubes (MWNTs) treated by nitric-sulfuric mixed acid were detected and characterized by electron spin resonance (ESR). Through reacting with these unpaired electrons, highly soluble acrylamide-grafted MWNTs were successfully prepared and characterized by ESR, FT-IR, UV-vis and atomic force microscopy (AFM), etc. The results indicate that MWNTs could generate more unpaired electrons with longer mixed-acid treatment time and could be well functionalized by acrylamide. By AFM analysis, a 'net' structure was formed on MWNTs after grafting with acrylamide. This new method has some obvious advantages of mild reaction conditions and convenient operation, etc. Furthermore, the grafting of MWNTs may have great potential for biomedical applications in drug delivery and regenerative medicine owing to their excellent networks.

UI MeSH Term Description Entries
D004578 Electron Spin Resonance Spectroscopy A technique applicable to the wide variety of substances which exhibit paramagnetism because of the magnetic moments of unpaired electrons. The spectra are useful for detection and identification, for determination of electron structure, for study of interactions between molecules, and for measurement of nuclear spins and moments. (From McGraw-Hill Encyclopedia of Science and Technology, 7th edition) Electron nuclear double resonance (ENDOR) spectroscopy is a variant of the technique which can give enhanced resolution. Electron spin resonance analysis can now be used in vivo, including imaging applications such as MAGNETIC RESONANCE IMAGING. ENDOR,Electron Nuclear Double Resonance,Electron Paramagnetic Resonance,Paramagnetic Resonance,Electron Spin Resonance,Paramagnetic Resonance, Electron,Resonance, Electron Paramagnetic,Resonance, Electron Spin,Resonance, Paramagnetic
D004583 Electrons Stable elementary particles having the smallest known negative charge, present in all elements; also called negatrons. Positively charged electrons are called positrons. The numbers, energies and arrangement of electrons around atomic nuclei determine the chemical identities of elements. Beams of electrons are called CATHODE RAYS. Fast Electrons,Negatrons,Positrons,Electron,Electron, Fast,Electrons, Fast,Fast Electron,Negatron,Positron
D046529 Microscopy, Electron, Transmission Electron microscopy in which the ELECTRONS or their reaction products that pass down through the specimen are imaged below the plane of the specimen. Electron Diffraction Microscopy,Electron Microscopy, Transmission,Microscopy, Electron Diffraction,Transmission Electron Microscopy,Diffraction Microscopy, Electron,Microscopy, Transmission Electron
D018625 Microscopy, Atomic Force A type of scanning probe microscopy in which a probe systematically rides across the surface of a sample being scanned in a raster pattern. The vertical position is recorded as a spring attached to the probe rises and falls in response to peaks and valleys on the surface. These deflections produce a topographic map of the sample. Atomic Force Microscopy,Force Microscopy,Scanning Force Microscopy,Atomic Force Microscopies,Force Microscopies,Force Microscopies, Scanning,Force Microscopy, Scanning,Microscopies, Atomic Force,Microscopies, Force,Microscopies, Scanning Force,Microscopy, Force,Microscopy, Scanning Force,Scanning Force Microscopies
D020106 Acrylamide A colorless, odorless, highly water soluble vinyl monomer formed from the hydration of acrylonitrile. It is primarily used in research laboratories for electrophoresis, chromatography, and electron microscopy and in the sewage and wastewater treatment industries.
D036103 Nanotechnology The development and use of techniques to study physical phenomena and construct structures in the nanoscale size range or smaller. Nanotechnologies
D037742 Nanotubes, Carbon Nanometer-sized tubes composed mainly of CARBON. Such nanotubes are used as probes for high-resolution structural and chemical imaging of biomolecules with ATOMIC FORCE MICROSCOPY. Buckytubes,Carbon Nanotubes,Nanoribbons,Buckytube,Carbon Nanotube,Nanoribbon,Nanotube, Carbon

Related Publications

Haijiao Zhang, and Huijiao Guo, and Xiaoyong Deng, and Ping Gu, and Zhiwen Chen, and Zheng Jiao
April 2017, Journal of nanoscience and nanotechnology,
Haijiao Zhang, and Huijiao Guo, and Xiaoyong Deng, and Ping Gu, and Zhiwen Chen, and Zheng Jiao
October 2013, Physical chemistry chemical physics : PCCP,
Haijiao Zhang, and Huijiao Guo, and Xiaoyong Deng, and Ping Gu, and Zhiwen Chen, and Zheng Jiao
March 2005, Journal of the American Chemical Society,
Haijiao Zhang, and Huijiao Guo, and Xiaoyong Deng, and Ping Gu, and Zhiwen Chen, and Zheng Jiao
September 2009, The Analyst,
Haijiao Zhang, and Huijiao Guo, and Xiaoyong Deng, and Ping Gu, and Zhiwen Chen, and Zheng Jiao
June 2010, Carbon,
Haijiao Zhang, and Huijiao Guo, and Xiaoyong Deng, and Ping Gu, and Zhiwen Chen, and Zheng Jiao
June 2002, Angewandte Chemie (International ed. in English),
Haijiao Zhang, and Huijiao Guo, and Xiaoyong Deng, and Ping Gu, and Zhiwen Chen, and Zheng Jiao
July 2003, Journal of the American Chemical Society,
Haijiao Zhang, and Huijiao Guo, and Xiaoyong Deng, and Ping Gu, and Zhiwen Chen, and Zheng Jiao
October 2022, Materials (Basel, Switzerland),
Haijiao Zhang, and Huijiao Guo, and Xiaoyong Deng, and Ping Gu, and Zhiwen Chen, and Zheng Jiao
December 2003, Chemical communications (Cambridge, England),
Haijiao Zhang, and Huijiao Guo, and Xiaoyong Deng, and Ping Gu, and Zhiwen Chen, and Zheng Jiao
January 2015, Nanomedicine : nanotechnology, biology, and medicine,
Copied contents to your clipboard!