Synthesis and Thermal Properties of a Novel Schiff Base Oligomer with a Double Azomethine Group and its Co(II) and Mn(II) Complexes

Karakaplan, Mürüvvet; Demetgül, Cahıt; Serın, Selahattın

doi:10.1080/10601320801947197

Cited by 19 publications

(5 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Oxidative polycondensation (OP) of monohydroxy or dihydroxy phenols having Schiff base units as side group has been quite studied in acidic and alkaline medium. [2][3][4][5][6][7][8] For a long time, Kaya and co-workers have studied on this class of PAMs with thermal, electrochemical, optical, and electrical properties. [9,10] Their conductivities have been raised by doping with iodine.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of polyphenol derived from Schiff bases containing methyl and carboxyl groups in the structure

Kaya

Kartal

Şenol

2015

Designed Monomers and Polymers

View full text Add to dashboard Cite

In this study, a series of Schiff bases (CBAA4MP, CBAA5MP, and CBAA3MP) which differ from each other based on the position of methyl group were synthesized. The derived monomers were changed into their polymer kind (P-CBAA4MP, P-CBAA5MP, and P-CBAA3MP) by oxidative polycondensation in aqueous alkaline medium using NaOCl as the oxidant. The structures of the synthesized compounds were enlightened using FT-IR, UV-vis, 1 H-NMR, and 13 C-NMR analyses. The 1 H-NMR and 13 C-NMR results showed that polymerization preceded by C-C and C-O-C couplings of the monomer units (phenylene and oxyphenylene groups). The molecular weight dispersion of the polymers was designated by size exclusion chromatography analysis. Electrochemical (E 0 g ) and optical (E g ) band gaps of the synthesized substances are measured using CV and UV-vis techniques, in order of. Solid state electrical conductivities of both doped and undoped states of the synthesized polymers were evaluated. Also, the effects to the electrochemical band gaps values of ortho, meta, and para positions of methyl group in the structures of polymers were examined from CV measurements.

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of polyphenol derived from Schiff bases containing methyl and carboxyl groups in the structure

Kaya

Kartal

Şenol

2015

Designed Monomers and Polymers

View full text Add to dashboard Cite

show abstract

“…H NMR spectra of polymers shows broad signals for aromatic protons which confirm the participation of aromatic ring in polymerization [2,19]. New signals were observed in the region of 169, 162 and 168 ppm in the 13 C NMR spectra of P-DEACIMP, P-ACIMB and P-ACIBM, respectively, due to -C-O-C-coupling, confirming polymerization occurred via -OH moiety [20]. Appearance of the new short resonances at 109,148 and 135,139 ppm obviously indicate polymerization of DEA-CIMP, ACIMB and ACIBM, respectively, i.e., -C-C binding occurs at ortho or para position of phenol by distribution of the phenoxy radical to the ring.…”

Section: Structural Characterization Of the Monomers And Polymersmentioning

confidence: 78%

Synthesis, characterization and electrochemical properties of poly(phenoxy-imine)s containing carbazole unit

2017

View full text Add to dashboard Cite

Several new Schiff base polymers were synthesized via oxidative polymerization method in an aqueous alkaline medium in the presence of NaOCl as an oxidant and were confirmed by FT-IR, 1 H-NMR, 13 C-NMR and UV-Vis spectroscopic techniques. Furthermore, cyclic voltammetry measurements were carried out and the HOMO-LUMO energy levels and electrochemical band gaps (E g ′) were calculated. Additionally, the optical band gaps (E g ) were determined using their UV-Vis spectra of the materials. The morphologic properties of the polymers were investigated by scanning electron microscopy. In addition, the number average molecular weight (M n ), weight average molecular weight (M w ) and polydispersity index values of the polymers were determined by gel permeation chromatography technique. Electrical conductivity measurements of the doped (with iodine) and undoped polymer related to doping time were carried out by four-point probe technique using a Keithley 2400 electrometer. Their thermal behaviors were determined by TG-DTA and DSC measurements. The synthesized compounds were soluble in common solvents such as DMF, THF and DMSO. Photoluminescence properties of the polymers were determined in different concentrations of DMF solvent.

show abstract

“…While the peaks recorded at 1377 and 1365 cm À1 originate from the aliphatic CeH bending vibrations, and the peaks at 1280 and 1217 cm À1 are due to eCeOe stretching vibrations in the spectra of 4-MMAP and P(4-MMAP), respectively [20]. Moreover, (I) the shift of the peaks in the polymer spectrum, (II) the decrease in the number of the peaks and (III) the broadening of the peaks in the spectrum of the polymer compared to that of the monomer can all be ascribed to the polymer structure [20,27].…”

Section: Ftir Spectramentioning

confidence: 99%

Synthesis, characterization, conductivity and antimicrobial study of a novel thermally stable polyphenol containing azomethine group

Baran

Karakışla

Demir

et al. 2016

Journal of Molecular Structure

View full text Add to dashboard Cite

Synthesis and Thermal Properties of a Novel Schiff Base Oligomer with a Double Azomethine Group and its Co(II) and Mn(II) Complexes

Cited by 19 publications

References 23 publications

Synthesis and characterization of polyphenol derived from Schiff bases containing methyl and carboxyl groups in the structure

Synthesis and characterization of polyphenol derived from Schiff bases containing methyl and carboxyl groups in the structure

Synthesis, characterization and electrochemical properties of poly(phenoxy-imine)s containing carbazole unit

Synthesis, characterization, conductivity and antimicrobial study of a novel thermally stable polyphenol containing azomethine group

Contact Info

Product

Resources

About