Publication Type : Conference Proceedings
Publisher : AIP Publishing
Source : AIP Conference Proceedings
Url : https://doi.org/10.1063/1.4810109
Campus : Nagercoil
School : School of Engineering
Year : 2013
Abstract : Electron spin resonance (ESR), Fourier transform infrared (FTIR) and Ultraviolet-visible (UV-Vis) studies were carried out for pure and histidine functionalized MWCNTs (0.2, 0.4 and 0.6 M concentration of histidine). EPR absorption spectral data found to be best fit for the Gaussian lineshape. The g-values indicate the presence of magnetic impurities in the samples and the interaction between the localized electrons and delocalized electrons in the nanotubes trapped at defects or magnetic ions site. The electron spin concentration decreases with increasing concentration of histidine, which implies that the unpaired electron in the MWCNTs undergo a reduction process in the histidine functionalized MWCNTs. FTIR study confirms the presence of functional groups in pure and histidine functionalized MWCNTs. UV-Vis study reveals that the formation of histidine-MWCNTs charge transfer complex.
Cite this Research Publication : Mathavan T., Kanimozhi C. V., Jothi Rajan M. A., Umapathy S., Dhas M. K., & Franklin Benial A. M, Spectroscopic studies on pure and histidine functionalized MWCNTs, AIP Conference Proceedings (Vol. 1536, No. 1, pp. 79-80),2013.