Synthesis and characterization of l-carnosine coated iron oxide nanoparticles

Durmuș, Z.; Kavas, H.; Baykal, A.; Sözeri, H.; Alpsoy, Lokman; Çelik, Sevim Ünügür; Toprak, Muhammet S.

doi:10.1016/j.jallcom.2010.11.088

Cited by 72 publications

(41 citation statements)

References 50 publications

(62 reference statements)

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“…The conduction mechanism can be assigned as conduction due to correlated barrier hopping (CBH) [46] with decreasing n values by increasing temperature. This type of conductivity in conducting polymernanoferrite composites were also reported in our previous studies [47,48]. The ε as a function of frequency in the temperature range of 20-120 • C for PVPA/BaFe 12 O 19 nanocomposite is shown in Fig.…”

Section: Temperature and Frequency Dependent Conductivitysupporting

confidence: 86%

Poly(vinyl phosphonic acid) (PVPA)–BaFe12O19 Nanocomposite

Durmuș

Kavas

Sözeri

et al. 2012

J Supercond Nov Magn

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We present a method for the fabrication of PVPA/ BaFe 12 O 19 nanocomposite by in-situ polymerization of vinyl phosphonic acid, VPA in the presence of synthesized BaFe 12 O 19 NPs. Nanoparticles and the nanocomposite were analyzed by XRD, FTIR, TGA, SEM, TEM, VSM, and conductivity techniques for structural and physicochemical characteristics. Nanoparticles, identified as BaFe 12 O 19 from XRD analysis, were successfully coated with PVPA and the linkage was assessed to be via P-O bonds. Electron microscopy analysis revealed aggregation of BaFe 12 O 19 particles and dominantly platelet morphology upon composite formation. TGA analysis revealed the composition of the nanocomposite as 65% BaFe 12 O 19 and 35% polymer. Magnetic evaluation revealed that adsorption of PVPA anions during the preparation of the nanocomposite strongly influenced the magnetic properties resulting in much lower saturation magnetization values. DC conductivity measurements were used to calculate activation energy of PVPA/BaFe 12 O 19 nanocomposite and it was obtained as 0.37 eV.

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Section: Temperature and Frequency Dependent Conductivitysupporting

confidence: 86%

Poly(vinyl phosphonic acid) (PVPA)–BaFe12O19 Nanocomposite

Durmuș

Kavas

Sözeri

et al. 2012

J Supercond Nov Magn

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“…Two broad peaks at 3414 and 1620 cm −1 are assigned to O-H stretching and bending modes of adsorbed water on the surface of the Mn 3 O 4 NPs. Two absorption bands observed at 621 and 512 cm −1 are associated with the coupling between Mn-O stretching modes of tetrahedral A-and octahedral B-sites [22][23][24][25][26], as expected from room temperature and at 10 K. ZFC (zero field cooling) and FC (field cooling) measurements were carried out at 100 Oe and the blocking temperature was determined from the measurements.…”

Section: Ftir Analysismentioning

confidence: 99%

Sonochemical synthesis and chracterization of Mn3O4 nanoparticles

et al. 2010

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Abstract:We report on the synthesis of Mn 3 O 4 nanoparticles (NPs) using a novel sonochemical method without requiring any pH adjustment.Synthesized material was identified as tetragonal hausmannite crystal structure model of Mn 3 O 4 from XRD analysis. Crystallite size was estimated from x-ray line profile fitting to be 17±5 nm. FTIR analysis revealed stretching vibrations of metal ions in tetrahedral and octahedral coordination confirming the crystal structure. TEM analysis revealed a dominantly cubic morphology of NPs with an average size of ~20 nm. Magnetic evaluation revealed a blocking temperature, T B of 40 K above which the material behaves paramagnetic. Asymmetric coercive field is attributed to the interaction between ferromagnetic Mn 3 O 4 and antiferromagnetic Mn oxide at the surface of nanoparticles.

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“…[OH -] ions leak to the interior water phase of the multiple emulsion. Therefore, magnetic iron oxide particles were synthesized in the core of cationic lipids regarding to the equation given below (6,(18)(19)(20)(21).…”

Section: Mnp Synthesismentioning

confidence: 99%

“…MNPs were formed when multiple emulsion droplets met with cold water (MNP-Pa) (22)(23)(24). A neodium magnet was used for separation of MNP-Pa. MNP-Pa washed with distilled water for two times and the characterization studies were carried on (6,19,25).…”

Section: Mnp Synthesismentioning

confidence: 99%

In situ production of cationic lipid coated magnetic nanoparticles in multiple emulsions for gene delivery

2016

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Magnetic nanoparticles are effective delivery systems to target therapeutic genes by the attractive forces of magnetic fields. Curative effects depending on dose of nucleic acids or drugs increased, while cytotoxic effects minimized with these systems. In this study, a novel magnetic nanoparticle synthesis method was developed by combining advantages of microemulsion and multiple emulsion methods. Particle size, zeta potential, magnetization, complex formation with nucleic acids, DNase I protection ability, and cytotoxicity levels were examined. At last, magnetic nanoparticles were obtained with a promising synthesis method and it is determined that they are sufficiently small, non-toxic and have optimal surface properties for systemic delivery of nucleic acids.

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Synthesis and characterization of l-carnosine coated iron oxide nanoparticles

Cited by 72 publications

References 50 publications

Poly(vinyl phosphonic acid) (PVPA)–BaFe12O19 Nanocomposite

Poly(vinyl phosphonic acid) (PVPA)–BaFe12O19 Nanocomposite

Sonochemical synthesis and chracterization of Mn3O4 nanoparticles

In situ production of cationic lipid coated magnetic nanoparticles in multiple emulsions for gene delivery

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