ORIGINAL_ARTICLE
The comparison of the antioxidant capacity of methanol extract in three species of Artemisia (A. sieberi Besser, A. aucheri, and A. deserti Krasch)
Artemisia deserti Krasch (A. deserti), Artemisia aucheri (A. aucheri) and Artemisia sieberi Besser (A. sieberi) are three members of Asteraceae (compositae) family, which grow widely in the even and high areas of Birjand, Iran. This study has attempted to compare the total antioxidant capacity of methanol extracts of these three plants using DPPH (1,1-Diphenyl-2-Picrylhydrazyl) radical scavenging assay in which spectrophotometry method was used at 517 nm. The results showed that the aerial parts (AP) of A. sieberi has the highest total antioxidant capacity (IC50=11.054 mg/mL). The lowest amount of antioxidant capacity was found in the root (R) of A. aucheri (IC50= 91.408 mg/mL).
https://icc.journals.pnu.ac.ir/article_991_aaf6308bfe8e5b6d00a897fcb8c6461b.pdf
2015-07-01
180
186
Antioxidant capacity
Artemisia sieberi Besser
Artemisia aucheri
Artemisia deserti Krasch
DPPH
Mohammad Ali
Nasseri
manaseri@birjand.ac.ir
1
University of Birjand
LEAD_AUTHOR
Zahra
Kakouee
z.kakouee@yahoo.com
2
University of Birjand
AUTHOR
Ali
Allahresani
rasaniali@gmail.com
3
University of Birjand,
AUTHOR
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30
ORIGINAL_ARTICLE
Green synthesis of nano polypyrrole using urea-hydrogen peroxide
Polypyrrole is one of the most useful conductive polymers, but green synthesis of this polymer has been restricted until now. The objective of the present paper is green synthesis of nano polypyrrole (PPy) by oxidative polymerization using urea-hydrogen peroxide. It was found that conductivity and morphology of polypyrrole are highly dependent on the reaction conditions such as the molar ratio of oxidized to monomer, temperature, reaction time, kind of solvents, the presence of a catalyst such as p-toluene sulfonic acid, and specially concentration and addition time of hydrochloric acid. After understanding the relationship between these factors, we turned this enormous variability into improved polypyrrole properties.
https://icc.journals.pnu.ac.ir/article_1135_0559929bf7b1a60f5377e91d03bdbffa.pdf
2015-07-01
187
198
Conductive polymer
green chemistry
oxidation polymerization
Nano PPy
P-toluene sulfonic acid
Fariba
Heidarizadeh
heidarizadeh@scu.ac.ir
1
Department of Chemistry, Faculty of Sciences, Shahid Chamran University, Ahvaz, P.O. Box 6135743337, Iran
LEAD_AUTHOR
Saeed
Asadipour
heidarizadeh@yahoo.com
2
Department of Chemistry , Shahid Chamran University, Ahvaz 6135743169, Iran
AUTHOR
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40
ORIGINAL_ARTICLE
A comparative study of catalytic properties of ZnO and FeZnO nanoparticles on Oxidation of Benzylic alcohols: Influence of doped metal
Novel nano-catalysts (Nano ZnO and Fe doped ZnO (Fe(0.1)Zn(0.99)O) synthesized by co-precipitation method in aqueous solution as new nanocatalysts and characterized by common techniques as FTIR, XRD, SEM and UVD. The size of particles obtained from XRD data is 27 and 16 nanometers for ZnO and Fresno respectively. Influences of doped Fe on ZnO catalytic properties in oxidation of Benzylic alcohols were studied. The oxidation carried out under mild and green conditions as: solvent free, at room temperature and with H2O2. The results show, FeZnO is better than ZnO as nanocatalyst in oxidation reaction. The rate, %conversion and %selectivity of reaction are improved in the presence of Fe atoms than ZnO only. The main product of oxidation reactions is Benzaldehyde and/or its derivatives.
https://icc.journals.pnu.ac.ir/article_1166_ed499518c2f2e7be782fc940dcb27dcc.pdf
2015-07-01
199
207
nanocatalyst
ZnO
FeZnO
doped nanoparticles
Oxidation
green oxidation
benzylic alcohols
Hamid
Mardani Kiasari
hamidreza.inorg@yahoo.com
1
Payame Noor university, Mazandaran
LEAD_AUTHOR
Mehdi
Forouzani
forouzanimehdi@yahoo.com
2
Department of Chemistry, Payame Noor University, Iran
AUTHOR
Mitra
Ziari
mitra.ziari@yahoo.com
3
Department of Chemistry, Payame Noor University, Iran
AUTHOR
Azim
Malekzadeh
malekzadeh@du.ac.ir
4
Department of Chemistry, Damghan University, Iran
AUTHOR
Pouria
Biparva
pourya2030@gmail.com
5
Department of Basic and Agricultural Sciences and Natural Resources University, Sari, Iran.
AUTHOR
[1] N. Salam, B. Banerjee, A.S. Roy, P. Mondal, S. Roy, A. Bhaumik, S.M. Islam; Applied Catalysis A: General, 2014, 477, 184-194.
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41
ORIGINAL_ARTICLE
Melamine trisulfonic acid as a highly efficient catalyst for the synthesis of polyhydroquinolines under solvent-free conditions
A highly efficient, simple and clean solvent-free protocol for the synthesis of polyhydroquinolines is described. The one-pot multi-component condensation reaction between arylaldehydes, dimedone (5,5-dimethylcyclohexane-1,3-dione), β-ketoesters and ammonium acetate in the presence of catalytic amount of (2.5 mol%) melamine trisulfonic acid (MTSA) as a recyclable, green and attractive sulfonic acid-containing catalyst at 60 °C affords the title compounds in high yields (83-98%) and short reaction times (3-30 min). The advantages of this method are efficiency, generality, high yield, short reaction time, cleaner reaction profile, simplicity, recyclability of the catalyst, ease of product isolation, and good compliance with the green chemistry protocols.
https://icc.journals.pnu.ac.ir/article_1173_b5d12e95cb2a0b53eb1851feeb735173.pdf
2015-07-01
208
217
polyhydroquinoline
melamine trisulfonic acid (MTSA)
solvent-free
arylaldehyde
dimedone (5,5-dimethylcyclohexane-1,3-dione)
β-ketoester
Abdolkarim
Zare
abdolkarimzare@yahoo.com
1
Department of Chemistry, Payame Noor University of Bushehr, Bushehr, Iran
LEAD_AUTHOR
Maryam
Dashtizadeh
mar.dashti54@gmail.com
2
Department of Chemistry, Payame Noor University, PO BOX 19395-4697, Tehran, Iran
AUTHOR
Maria
Merajoddin
maria.merajoddin@yahoo.com
3
Department of Chemistry, Payame Noor University, PO BOX 19395-4697, Tehran, Iran
AUTHOR
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39
ORIGINAL_ARTICLE
The green synthesis of pyrano[3,2-c]quinoline-2,5-dione derivatives catalyzed by acidic ionic liquid under ultrasound irradiation
Abstract-A novel and efficient method has been developed for the synthesis of pyrano[3,2-c]quinoline-2,5-dione derivatives by the convenient ultrasound-mediated condensation of 4-hydroxyquinolin-2-one with Meldrum’s acid and aldehydes in the presence of a catalytic amount of [HMIm]HSO4 as a green, efficient and reusable acidic ionic liquid medium. The stability of the ionic liquid during the reaction was high and, used for several times to recycled form. Placing the reaction mixture under ultrasound condition causes that we have lower energy consumption and achieve to the desired product in the optimal time. The method is simple, starts from readily accessible commercial starting materials, and provides biologically interesting products in good yields and short reaction times.
https://icc.journals.pnu.ac.ir/article_1215_8ad471ae90d17a7d97a46beae2de48b5.pdf
2015-07-01
218
231
Ultrasonic irradiation
Meldrum’s acid
pyrano[3,2-c]quinoline
ionic liquid
Esmayeel
Abbaspour-Gilandeh
abbaspour1365@yahoo.com
1
islamic azad university of ardabil
LEAD_AUTHOR
Seyyedeh Cobra
Azimi
tazimi_2005@yahoo.com
2
Islamic Azad University, rasht, Iran
AUTHOR
[1] J.S. Torrecilla, J. Palomar, J.N. Garcí, F. Rodríguez, K. J. Chem. Eng. Data, 2009, 54, b1297.
1
[2] Roshan,N., Ghader, S., 2012. Developing models for correlating ionic liquids density: Part 1 – Density at 0.1 MPa., Fluid Phase Equilibria 331, p.33.
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[3] Thermodynamics of room temperature ionic liquids: Thesis report for 2011, University of Aberdeen, Barcelo, P., May 2011.
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[4] R. Fortunato,C.A.M.A. Fonso, M.A.M. Reis, J.G. Crespo, J. Memb. Sci., 2004, 242, 197-209.
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35
ORIGINAL_ARTICLE
One-pot reductive Amination of Carbonyl Compounds using NaBH4 and Fe3O4 Magnetic Nanoparticles
One-pot reaction of aldehydes or ketons with aniline derivatives was performed using NaBH4 and Fe3O4 magnetic nanoparticles (MNPs). The optimum amount of Fe3O4 MNPs was 5 mol% under solvent free condition. The corresponding products were obtained in good to excellent yields. The magnetically recoverable iron oxide nanoparticles are found to be efficient for synthesis of amine derivatives. These nanoparticles are effective in green chemistry and could be successfully reuse. in addition to having the general advantages attributed to the inherent magnetic property of nanocatalyst, Fe3O4MNPs exhibited exceptionally high catalytic activity compared to other catalysts, to yield the desired products in short reaction time and mild reaction conditions.
https://icc.journals.pnu.ac.ir/article_1228_c8c4c1daed0e1b86c54b012c6330ea9a.pdf
2015-07-01
232
243
Fe3O4 (MNPS)
aniline derivative
aldehyde
ketone
amine
NaBH4
Mehdi
Forouzani
forouzanimehdi@yahoo.com
1
Payame noor University
AUTHOR
Navabeh
Nami
navabehnami@yahoo.com
2
Department of Chemistry, Islamic Azad University-Qaemshahr Branch, Mazandaran, Iran
LEAD_AUTHOR
Hassan
Ghasemnejad-Bosra
3
Islamic Azad University-Babol Branch
AUTHOR
Omid
Khalilpour Tylami
4
Islamic Azad University-Qaemshahr Branch
AUTHOR
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33
ORIGINAL_ARTICLE
Synthesis of neopentyl glycol and ethylene glycol esters by fatty acids in the presence of acidic ion exchange resin catalyst
A most effective and less energy demanding method of producing fatty esters, diol esters, by esterifying fatty acids, with neopentyl and ethylenglycol alcohols in the presence of an acidic ion exchange resin catalyst(polyestyrendivinylbenzensulfated) was investigated at elevated temperature. In this process an azeotroping agent, toluene, was used to facilitate continuous removal of water by distillation, formed as a by-product during the esterification reaction.The esterification reaction is completed within 4-5 hours and neopentyl and ethylenglycol esters produced with properties of lubricity and biodegradability One of the most important modifications of the carboxyl group of the fatty acid chain is the esterification of the fatty acids obtained by cleavage of such esters. Those processes are performed on large scale. Esterification reactions of neopentylpolyols are normally catalysed with acidic or basic catalysts.Typical homogeneous catalysts are p-toluene sulphonic acid, phosphoric acid, sulphuric acid, sodium hydroxide, sodium ethoxide and sodium methoxide[1-5]. In some cases, heterogeneous catalysts such as Sn-oxalate or cation exchange resins are used. Enzyme catalysed reactions are also known
https://icc.journals.pnu.ac.ir/article_1231_097d4f6ae50f5ae9bf284f70c2abc5a4.pdf
2015-07-01
244
253
Ethylenglycol esters
neopenthylglycol ester
fatty esters
synthetic lubricant ester
resin catalyst
Hadi
Jabbari
hadijabbari@yahoo.com
1
Department of Chemistry, Payame Noor University, P.O. BOX 19395-4697, Tehran, Iran.
LEAD_AUTHOR
Jabbar
Khalafy
jkhalafi@yahoo.com
2
Department of Chemistry, Faculty of Science, University of Urmia, Urmia 57153-165, Iran.
AUTHOR
Peyman
Najafi Moghadam
3
Department of Chemistry, Faculty of Science, University of Urmia, Urmia 57153-165, Iran.
AUTHOR
[1] K. Mantri, K. Komura, Y. Sugi, J. Green Chem, 2005, 7, 677-685.
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[2] K. Wilson Clark, Pure Appl Chem., 2000, 72, 1313-1319.
2
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3
[4] J.C. Juan, J.C. Zhang, M.A. Yarmo, J. Catal. A: Chem, 2007, 267, 265.
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15
ORIGINAL_ARTICLE
Synthesis, Characterization and interaction Studies of 1-(3-bromophenyl azo) 2,7-dihydroxy naphthalene, (BPADHN) with calf thymus deoxy ribo nucleic acid (ct-DNA)
In this study at first , an azo dye, 2,7- naphthalenediol, 2-[(4-Bromophenyl)azo (BPAND) as a ligand has been synthesized by addition of p-Bromoaniline to the modified montomorillonite K10 clay. This ligand was characterized using 1H-NMR, UV-Vis and IR spectroscopies. Subsequently, its interaction with calf thymus deoxyribonucleicacid ,ct-DNA was investigated in 5 mM phosphate buffer solution, pH=7 using UV-Vis absorption, thermal denaturation and viscosity measurement. From spectrophotometric titration experiments, the binding constant of BPAND with ct-DNA was found to be (2.89±0.2)×107 M-1 at 25°C. In order to determine changes in thermodynamic properties such as binding constant, Gibbs free energy, binding enthalpy and binding entropy, this experiment was done at various temperatures. The enthalpy and entropy changes were -2.852±0.634 kJ/mol and -814.065 ±2.52 J/mol.K, respectively.Thermal denaturation experiments show the increasing of melting temperature of ct-DNA (about 0.06°C less than 0.6) due to binding of BPAND ligand. From these results the mechanism and the stoichiometry of binding were determined. The results revealed that this interaction is exothermic (negative enthalpy change) along with negative entropy change. Therefore, the driving force in these interactions is enthalpy and the process is enthalpy-driven and suggest that the main driving force for the ct-DNA-BPAND complex formation is being Van der Waals or hydrogen binding.
https://icc.journals.pnu.ac.ir/article_1257_8bc37700810a5def56b781d7ee0d5b2f.pdf
2015-07-01
254
265
Deoxyribo nucleic acid
azo dye
thermodynamic
UV/Vis spectroscopy
Nasrin
Sohrabi
nasrinsohrabi@yahoo.com
1
Department of Chemistry,Payame Noor University-Tehran-Iran
LEAD_AUTHOR
Maryam
Dookheh
2
Department of Chemistry, Payame Noor University, P.O. BOX 19395-4697 Tehran, Iran
AUTHOR
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ORIGINAL_ARTICLE
Magnetic force microscopy using fabricated cobalt-coated carbon nanotubes probes
Magnetic force microscope ( MFM ) is a powerful technique for mapping the magnetic force gradient above the sample surface. Herein, single-wall carbon nanotubes (SWCNT) were used to fabricate MFM probe by dielectrophoresis method which is a reproducible and cost-effective technique. The effect of induced voltage on the deposition manner of carbon nanotubes (CNT) on the atomic force microscope ( AFM ) tip was investigated . The optimum voltage and frequency of SWCNT solution are obtained as 13 volts and 2 MHz, respectively. After coating theas-prepared CNT tips with a layer of cobalt,it can be used to obtain high resolution MFM images.
https://icc.journals.pnu.ac.ir/article_1259_5be52a8b9030ea9fd03fad1ae879ad17.pdf
2015-07-01
266
275
Magnetic force microscope
dielectrophoresis
carbon nanotube probe
MFM probe
Jamal
Afzali
jamal.afzali@gmail.com
1
Physics, Young Researchers Club and Elites, Islamic azad university, sanandaj branch, sanandaj, iran
LEAD_AUTHOR
Sedigheh
Sadegh Hassani
nsadeghhassani@yahoo.co.uk
2
Catalysis and Nanotechnology Research Division, Research Institute of Petroleum Industry, P. O. Box: 1485733111, Tehran, Iran
AUTHOR
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[4] Modern Aspects of Bulk Crystal and Thin Film Preparation, Chapter title, H.R.Aghabozorg, S.SadeghHassani and F. Salehirad, Intechweb publisher, January, 2012.
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[5] Recent Advances in Nanofabrication Techniques and Applications, S. SadeghHassani and H.R. Aghabozorg, Intechweb publisher, December, 2011.
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33
ORIGINAL_ARTICLE
Denture base polymers, poly methyl methacrylate improved using free radical copolymerization
Poly methyl methacrylate (PMMA) is the most common material used in Prosthodontics. Several studies indicate a breakdown of the number of very high resin bases after 2 to 3 years to avoid breaking bass and several attempts have been made, such as altering the chemical structure of resin by adding causes cross linking or copolymerization. The innovative method for improving the physical properties of the prosthesis and increase its strength, a copolymer of styrene - methyl methacrylate was proposed. Tensile strength increased with the increase of styrene with methyl methacrylate in an amount determined to be the most resistant. Polystyrene and poly methyl methacrylate and copolymers characterized by FTIR, CNMR and Tg and tensile strength were measured according to ISO1567 standard.
https://icc.journals.pnu.ac.ir/article_1268_9bab45f889d78d4bf6ca061f165e4ca4.pdf
2015-07-01
276
282
copolymer
poly methyl methacrylate (PMMA)
poly styrene(PSt)
tensile strength
Abdoulhossien
Massoudi
massoudihossein@yahoo.com.au
1
Department of Chemistry, Payame Noor University, PB BOX 19395-4697, Tehran, Iran.
AUTHOR
Azam
Louie
o_louie2001@yahoo.com
2
Department of Chemistry, Payame Noor University, PB BOX 19395-4697, Tehran, Iran.
AUTHOR
Omid
Louie
louie5556@gmail.com
3
Department of Chemistry, Payame Noor University, PO Box 19395-4697, Tehran, Iran
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19
[21] J. Tang, B. Gao, H. Geng, O.D. Velev, L Qin, O. Zhou, Adv. Mater(Weinheim, Ger)., 2003, 15, 1352-1356.
20