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Dive into the research topics where Mohammad Hossein Azarian is active.

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Featured researches published by Mohammad Hossein Azarian.


Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2014

Novel nanohybrids of cobalt(III) Schiff base complexes and clay: synthesis and structural determinations.

Ali Hossein Kianfar; Wan Ahmad Kamil Mahmood; Mohammad Dinari; Mohammad Hossein Azarian; Fatemeh Zare Khafri

The [Co(Me(2)Salen)(PBu(3))(OH(2))]BF4 and [Co(Me(2)Salen)(PPh(3))(Solv)]BF(4), complexes were synthesized and characterized by FT-IR, UV-Vis, (1)H NMR spectroscopy and elemental analysis techniques. The coordination geometry of [Co(Me(2)Salen)(PPh(3))(H(2)O)]BF(4) was determined by X-ray crystallography. It has been found that the complex is containing [Co(Me(2)Salen)(PPh(3))(H(2)O)]BF(4) and [Co(Me(2)Salen)(PPh(3))(EtOH)]BF(4) hexacoordinate species in the solid state. Cobalt atom exhibits a distorted octahedral geometry and the Me(2)Salen ligand has the N2O2 coordinated environment in the equatorial plane. The [Co(Me(2)Salen)(PPh(3))(H(2)O)]BF(4) complex shows a dimeric structure via hydrogen bonding between the phenolate oxygen and hydrogens of coordinated H2O molecule. These complexes were incorporated into Montmorillonite-K10 nanoclay. The modified clays were identified by FT-IR, XRD, EDX, TGA/DTA, SEM and TEM techniques. According to the XRD results of the new nanohybrid materials, the Schiff base complexes are intercalated in the interlayer spaces of the clay. SEM and TEM micrographs show that the resulting hybrid nanomaterials have layer structures. Also, TGA/DTG results show that the intercalation reaction was taken place successfully.


Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2015

Immobilization of cobalt(III) Schiff base complexes onto Montmorillonite-K10: Synthesis, experimental and theoretical structural determination

Ali Hossein Kianfar; Wan Ahmad Kamil Mahmood; Mohammad Dinari; Hossein Farrokhpour; Majid Enteshari; Mohammad Hossein Azarian

The [Co(naphophen)(PPh3)(OH2)]ClO4 and [Co(naphophen)(PBu3)(OH2)]BF4 (where naphophen=bis(naphthaldehyde)1,2-phenylenediimine) complexes were synthesized and chracterized by FT-IR, UV-Vis, (1)H NMR, (13)C NMR spectroscopy and elemental analysis techniques. The coordination geometry of the synthesized complexes were determined by X-ray crystallography. Cobalt (III) complexes have six-coordinated pseudo-octahedral geometry in which the O(1), O(2), N(1) and N(2) atoms of the Schiff base forms the equatorial plane. These complexes showed a dimeric structure via hydrogen bonding between the phenolate oxygen and the hydrogens of the coordinated H2O molecule. The theoretical calculations were also performed to optimize the structure of the complexes in the gas phase to confirm the structures proposed by X-ray crystallography. In addition, UV-Visible and IR spectra of complexes were calculated and compared with the corresponding experimental spectra to complete the experimental structural identification. The synthesized complexes were incorporated onto the Montmorillonite-K10 nanoclay via simple ion-exchange reaction. The structure and morphology of the obtained nanohybrids were identified by FT-IR, XRD, TGA/DTA, SEM and TEM techniques. Based on the XRD results of the new nanohybrid materials, the Schiff base complexes were intercalated in the interlayer spaces of clay. SEM and TEM micrographs of the clay/complex shows that the resulting hybrid nanomaterials has layer structures.


Journal of the Science of Food and Agriculture | 2017

Characterisation of electrospun gelatine nanofibres encapsulated with Moringa oleifera bioactive extract

Norziah Mohd Hani; Amir Ehsan Torkamani; Mohammad Hossein Azarian; Kamil Wa Mahmood; Siti Hawa Ngalim

BACKGROUND Drumstick (Moringa oleifera) leaves have been used as a folk herbal medicine across many cultures since ancient times. This is most probably due to presence of phytochemicals possessing antioxidant properties, which could retard oxidative stress, and their degenerative effect. The current study deals with nanoencapsulation of Moringa oleifera (MO) leaf ethanolic extract within fish sourced gelatine matrix using electrospinning technique. RESULTS The total phenolic and flavonoid content, radical scavenging (IC50 ) and metal reducing properties were 67.0 ± 2.5 mg GAE g-1 sample 32.0 ± 0.5 mg QE g-1 extract, 0.08 ± 0.01 mg mL-1 and 510 ± 10 µmol eq Fe(II) g-1 extract, respectively. Morphological and spectroscopic analysis of the fibre mats confirmed successful nanoencapsulation of MO extract within defect free nanofibres via electrospinning process. The percentage encapsulation efficiency (EE) was between 80% and 85%. Furthermore, thermal stability of encapsulated fibres, especially at 3% and 5% of core loading content, was significantly improved. Toxicological analysis revealed that the extract in its original and encapsulated form was safe for oral consumption. CONCLUSION Overall, the present study showed the potential of ambient temperature electrospinning process as a safe nanoencapsulation method, where MO extract retained its antioxidative capacities.


Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2017

An experimental and theoretical study on the interaction of DNA and BSA with novel Ni 2 + , Cu 2 + and VO 2 + complexes derived from vanillin bidentate Schiff base ligand

Morteza Dostani; Ali Hossein Kianfar; Wan Ahmad Kamil Mahmood; Mohammad Dinari; Hossein Farrokhpour; Mohammad R. Sabzalian; Fatemeh Abyar; Mohammad Hossein Azarian

In this investigation, the structure of bidentate N,N-Schiff base ligand of vanillin, (E)-4-(((2-amino-5-nitrophenyl)imino)methyl)-2-methoxyphenol (HL) was determined by single crystal X-ray diffraction. The interaction of new [CuL2], [NiL2] and [VOL2] complexes with DNA and BSA was explored through UV-Vis and fluorescence spectroscopy. The electronic spectra changes displayed an isosbestic point for the complexes upon titration with DNA. The Kb values for the complexes [CuL2], [NiL2] and [VOL2] were 2.4×105, 1.9×105 and 4.2×104, respectively. [CuL2] complex was bound more toughly than [NiL2] and [VOL2] complexes. These complexes had a significant interaction with Bovine Serum Albumin (BSA) and the results demonstrated that the quenching mechanism was a static procedure. Also, the complexes interacted with BSA by more than one binding site (n>1). Finally, the theoretical studies were performed using the docking method to calculate the binding constants and recognize the binding site of the DNA and BSA with the complexes. The ligand and complexes including Ni2+, Cu2+ and VO2+ ions were colonized by fungal growth.


Inorganica Chimica Acta | 2017

Epoxidation of alkenes by an oxidovanadium(IV) tetradentate Schiff base complex as an efficient catalyst with tert-butyl hydroperoxide

Maryam Sedighipoor; Ali Hossein Kianfar; Wan Ahmad Kamil Mahmood; Mohammad Hossein Azarian


Journal of Non-crystalline Solids | 2013

Sol-gel synthesis and morphology, thermal and optical properties of epoxidized natural rubber/zirconia hybrid films

Wan Ahmad Kamil Mahmood; Mohammad Mizanur Rahman Khan; Mohammad Hossein Azarian


Polyhedron | 2017

Synthesis and electronic structure of novel Schiff bases Ni/Cu (II) complexes: Evaluation of DNA/serum protein binding by spectroscopic studies

Maryam Sedighipoor; Ali Hossein Kianfar; Wan Ahmad Kamil Mahmood; Mohammad Hossein Azarian


Current Applied Physics | 2015

Thermal, surface, nanomechanical and electrical properties of epoxidized natural rubber (ENR-50)/ polyaniline composite films

Wan Ahmad Kamil Mahmood; Mohammad Hossein Azarian


Journal of Applied Polymer Science | 2017

Nanoencapsulation of montmorillonite clay within poly(ethylene glycol) nanobeads by electrospraying

Wan Ahmad Kamil Mahmood; Mohammad Hossein Azarian; Wan Farahhanim bt Wan Fathilah; Eunice Kwok


Journal of Polymer Research | 2016

Sol-gel synthesis of polyaniline/zirconia composite conducting materials

Wan Ahmad Kamil Mahmood; Mohammad Hossein Azarian

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Eunice Kwok

Universiti Sains Malaysia

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