Baran, TalatMenteş, Ayfer13.07.20192019-07-2913.07.20192019-07-2920160022-28601872-8014https://doi.org/10.1016/j.molstruc.2016.03.015https://hdl.handle.net/20.500.12451/5749In this study, a new eco-friendly Schiff base based on O-carboxymethyl chitosan ([OCMCS-7a]) and its copper(II) and palladium(II) complexes were synthesized. Characterizations of [OCMCS-7a] and its metal complexes were conducted using FTIR, H-1 NMR, C-13 NMR, TG/DTG, XRD, SEM-EDAX, ICP, UV-VIS, GC-MS, elemental analysis, magnetic moment and molar conductivity measurements. The degree of substitution (DS) of [OCMCS-7a] was determined by elemental analysis to be 0.44. It was shown by the solubility test that [OCMCS-7a] was completely soluble in water. Surface images of chitosan, [OCMCS-7a] and its Cu(II) and Pd(II) complexes were investigated using the SEM-EDAX technique. Their thermal behaviors and crystallinities of the synthesized complexes were determined by TG/DTG and X-ray powder diffraction techniques, respectively. The metal contents of the obtained complexes were determined using an ICP-OES instrument. From the analyses, it was noted that the thermal stabilities and crystallinities of [OCMCS-7a] and its complexes decreased compared to chitosan. As a consequence of surface screening, it was also noted that the surface structure of the chitosan was smoother than that of the obtained compounds. (C) 2016 Elsevier B.V. All rights reserved.eninfo:eu-repo/semantics/closedAccessO-carboxymethyl ChitosanSEMCrystallinity IndexDegree of SubstitutionArticle111522022710.1016/j.molstruc.2016.03.015Q1WOS:000374612400025N/A