Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10135200 | Journal of Molecular Structure | 2019 | 18 Pages |
Abstract
Nanocomposites formed from the precursor of molecule-based magnets [Cu(opba)]2â [opbaâ¯=â¯o-phenylenebis(oxamate)] and single-wall carbon nanotubes (SWCNTs) were characterized by X-ray absorption near edge structure (XANES) and X-ray photoelectron spectroscopy (XPS) at Carbon and Nitrogen K edges and Cu L2,3edges. The N K XANES, XPS and micro-ATR-FTIR data strongly suggested that [Cu(opba)]2â molecules be flatly bonded onto the surface of the SWCNTs. Therefore, higher charge delocalization and electronic modifications were observed. The presence of a new band at 286.1â¯eV in the Carbon peak of XPS spectra of nanocomposites was assigned to the Carbon surface of the SWCNTs modified by interaction with the metal complex. The micro-ATR-FTIR data supported by DFT calculations show many changes in the bands related to νCâ¯=â¯C and νCâ¯=â¯O groups of the metal complex in the nanocomposites. Such changes confirmed that the vibrational properties of the complex also changed due to interaction with the carbon nanotubes.
Related Topics
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Authors
Gustavo M. Do Nascimento, Walace D. Do Pim, Morinobu Endo, go Bong Choi, Yoong Ahm Kim, Noriberto A. Pradie, Humberto O. Stumpf,