The formation of Co(II) ion complexes with reduced low-molar dextran (RLMD, Mw 5000 g/mol) was studied at the pH range from 7.0 to 13.5. The cobalt content in synthesized Co(II)-RLMD complexes was ~3–12% (AAS) and it generally increases with pH. Co(II)-RLMD complexes were characterized by UV-Vis spectrophotometry and FTIR spectroscopy. UV-Vis data for synthesized complexes indicate tetragonally distorted Oh coordination of Co(II) ions with O atoms from ligand. The presence of IR bands at 765 cm−1 and 910 cm−1 in Co(II)-RLMD complexes indicates the existence of α-(1→6)O-glycosidic bonds. The similarities in the γ(C–H) range of the IR spectra indicate that there is no difference in the conformation of the glucopyranose units in RLMD and Co(II)-RLMD complexes. The occurrence of water molecules in Co(II)-RLMD complexes was confirmed by FTIR spectroscopy of deuterated samples.
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
5
Žarko Mitić, Goran M. Nikolić, Milorad Cakić, Goran S. Nikolić, Slavoljub Živanović, Sanja Mitić, Stevo Najman
(2018)
Synthesis, spectroscopic and structural characterization of Co(II)-pullulan complexes by UV-Vis, ATR-FTIR, MALDI-TOF/TOF MS and XRD
Carbohydrate Polymers, 200()
10.1016/j.carbpol.2018.07.032
Fatemeh Hakimian, Mohammad Mazloum-Ardakani
(2023)
Ag nanorod@PEI-Ag nanohybrid as an excellent signal label for sensitive and rapid detection of serum HER2
Scientific Reports, 13(1)
10.1038/s41598-023-48838-3
Simona Liliana Iconaru, Mihai Valentin Predoi, Mikael Motelica-Heino, Daniela Predoi, Nicolas Buton, Christelle Megier, George E. Stan
(2020)
Dextran-Thyme Magnesium-Doped Hydroxyapatite Composite Antimicrobial Coatings
Coatings, 10(1)
10.3390/coatings10010057
N.V. Scheglova, T.V. Popova, A.V. Druzhinina, T.V. Smotrina
(2019)
Spectrophotometric study of complexation of cobalt (II) with HEDP in aqueous solutions
Journal of Molecular Liquids, 286()
10.1016/j.molliq.2019.110909
Milorad Cakić, Goran Nikolić, Žarko Mitić, Slobodan Glišić, Dragan Cvetković, Ljiljana Stanojević
(2019)
Nano-biocomplexes based on oligosaccharides and their derivates
Advanced Technologies, 8(2)
10.5937/savteh1902016CThe statements, opinions and data contained in the journal are solely those of the individual authors and contributors and not of the publisher and the editor(s). We stay neutral with regard to jurisdictional claims in published maps and institutional affiliations.