Electron paramagnetic resonance and non-resonant microwave absorption of single wall carbon nanotubes

2007 ◽  
Vol 244 (11) ◽  
pp. 3890-3895 ◽  
Author(s):  
B. Corzilius ◽  
S. Agarwal ◽  
K.-P. Dinse ◽  
K. Hata
Keyword(s):  
Carbon Nanotubes ◽  
Electron Paramagnetic Resonance ◽  
Microwave Absorption ◽  
Single Wall Carbon Nanotubes ◽  
Paramagnetic Resonance ◽  
Single Wall Carbon ◽  
Electron Paramagnetic

Solubility of carbon nanotubes

2000 ◽  
Vol 633 ◽  
Author(s):  
Marc In Het Panhuis ◽  
Jonathan N. Coleman ◽  
Werner J. Blau
Keyword(s):  
Carbon Nanotubes ◽  
Electron Paramagnetic Resonance ◽  
Experimental Evidence ◽  
Experimental Technique ◽  
Carbon Material ◽  
Conjugated Polymer ◽  
Paramagnetic Resonance ◽  
Sample Bottle ◽  
Carbon Soot ◽  
Electron Paramagnetic

AbstractWe have described a novel experimental technique to separate nanotubes from other unwanted carbon species in arc generated carbon soot. A conjugated polymer was used to bind to nanotubes in solution. The resultant hybrid was soluble while extraneous carbon material formed a sediment at the bottom of the sample bottle. This process was monitored using electron paramagnetic resonance (EPR) which showed that 63% of nanotubes were kept in solution while 98.1% of impurities were rejected. Optimal polymer characteristics for nanotube solubility were identified using geometry optimisation and experimental evidence. It was calculated that a successful polymer has a flat shaped helical backbone with solvent solubilising groups projected outwards. This is achieved with the following polymer characteristics, two solvent solubilising groups on a twist allowing π-conjugated backbone.

Applications of EPR Spectrometer in Environmental Samples

2015 ◽  
Vol 1092-1093 ◽  
pp. 589-592
Author(s):  
Shao Hua Liao ◽  
Fang Yang ◽  
Fang Fang Li ◽  
Jing Yang ◽  
Min Wu
Keyword(s):  
Carbon Nanotubes ◽  
Electron Paramagnetic Resonance ◽  
Free Radicals ◽  
Transition Metals ◽  
Environmental Samples ◽  
High Sensitivity ◽  
Organic Radicals ◽  
Paramagnetic Resonance ◽  
Potential Risks ◽  
Electron Paramagnetic

Electron paramagnetic resonance (EPR) spectrometer was widely applied to physics, chemistry and biomedicine. This research provided possible electron and valence information of environmental samples interaction through high sensitivity. The EPR signals of transition metals and organic radicals were distinguished well. Three kinds of carbon nanotubes (CNTs) (MW50, MW30 and MWG) had strong EPR signals. Addition of transition metals may be a suitable way to decrease environmentally persistent free radicals (EPFRs). The potential risks of EPFRs in BC and the reactive free electron in transition metals must be addressed to ensure their safe and scientific absorption application.

Synthesis ofBa1−xKxBiO3ceramic specimens: Electron paramagnetic resonance and microwave absorption

1996 ◽  
Vol 53 (14) ◽  
pp. 9442-9447 ◽  
Author(s):  
Sushil K. Misra ◽  
Serguei I. Andronenko ◽  
Rosa R. Andronenko ◽  
Larisa P. Mezentseva
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Microwave Absorption ◽  
Paramagnetic Resonance ◽  
Electron Paramagnetic
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