eng
Iranian chemical communication
2423-4958
2345-4806
2015-07-01
3
Issue 3, pp. 180-282,Serial No. 8
180
186
991
The comparison of the antioxidant capacity of methanol extract in three species of Artemisia (A. sieberi Besser, A. aucheri, and A. deserti Krasch)
Mohammad Ali Nasseri
manaseri@birjand.ac.ir
1
Zahra Kakouee
z.kakouee@yahoo.com
2
Ali Allahresani
rasaniali@gmail.com
3
University of Birjand
University of Birjand
University of Birjand,
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
Antioxidant capacity
Artemisia sieberi Besser
Artemisia aucheri
Artemisia deserti Krasch
DPPH
eng
Iranian chemical communication
2423-4958
2345-4806
2015-07-01
3
Issue 3, pp. 180-282,Serial No. 8
187
198
1135
Green synthesis of nano polypyrrole using urea-hydrogen peroxide
Fariba Heidarizadeh
heidarizadeh@scu.ac.ir
1
Saeed Asadipour
heidarizadeh@yahoo.com
2
Department of Chemistry, Faculty of Sciences, Shahid Chamran University, Ahvaz, P.O. Box 6135743337, Iran
Department of Chemistry , Shahid Chamran University, Ahvaz 6135743169, Iran
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
Conductive polymer
green chemistry
oxidation polymerization
Nano PPy
P-toluene sulfonic acid
eng
Iranian chemical communication
2423-4958
2345-4806
2015-07-01
3
Issue 3, pp. 180-282,Serial No. 8
199
207
1166
A comparative study of catalytic properties of ZnO and FeZnO nanoparticles on Oxidation of Benzylic alcohols: Influence of doped metal
Hamid Mardani Kiasari
hamidreza.inorg@yahoo.com
1
Mehdi Forouzani
forouzanimehdi@yahoo.com
2
Mitra Ziari
mitra.ziari@yahoo.com
3
Azim Malekzadeh
malekzadeh@du.ac.ir
4
Pouria Biparva
pourya2030@gmail.com
5
Payame Noor university, Mazandaran
Department of Chemistry, Payame Noor University, Iran
Department of Chemistry, Payame Noor University, Iran
Department of Chemistry, Damghan University, Iran
Department of Basic and Agricultural Sciences and Natural Resources University, Sari, Iran.
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
nanocatalyst
ZnO
FeZnO
doped nanoparticles
Oxidation
green oxidation
benzylic alcohols
eng
Iranian chemical communication
2423-4958
2345-4806
2015-07-01
3
Issue 3, pp. 180-282,Serial No. 8
208
217
1173
Melamine trisulfonic acid as a highly efficient catalyst for the synthesis of polyhydroquinolines under solvent-free conditions
Abdolkarim Zare
abdolkarimzare@yahoo.com
1
Maryam Dashtizadeh
mar.dashti54@gmail.com
2
Maria Merajoddin
maria.merajoddin@yahoo.com
3
Department of Chemistry, Payame Noor University of Bushehr, Bushehr, Iran
Department of Chemistry, Payame Noor University, PO BOX 19395-4697, Tehran, Iran
Department of Chemistry, Payame Noor University, PO BOX 19395-4697, Tehran, Iran
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
polyhydroquinoline
melamine trisulfonic acid (MTSA)
solvent-free
arylaldehyde
dimedone (5,5-dimethylcyclohexane-1,3-dione)
β-ketoester
eng
Iranian chemical communication
2423-4958
2345-4806
2015-07-01
3
Issue 3, pp. 180-282,Serial No. 8
218
231
1215
The green synthesis of pyrano[3,2-c]quinoline-2,5-dione derivatives catalyzed by acidic ionic liquid under ultrasound irradiation
Esmayeel Abbaspour-Gilandeh
abbaspour1365@yahoo.com
1
Seyyedeh Cobra Azimi
tazimi_2005@yahoo.com
2
islamic azad university of ardabil
Islamic Azad University, rasht, Iran
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
Ultrasonic irradiation
Meldrum’s acid
pyrano[3,2-c]quinoline
ionic liquid
eng
Iranian chemical communication
2423-4958
2345-4806
2015-07-01
3
Issue 3, pp. 180-282,Serial No. 8
232
243
1228
One-pot reductive Amination of Carbonyl Compounds using NaBH4 and Fe3O4 Magnetic Nanoparticles
Mehdi Forouzani
forouzanimehdi@yahoo.com
1
Navabeh Nami
navabehnami@yahoo.com
2
Hassan Ghasemnejad-Bosra
3
Omid Khalilpour Tylami
4
Payame noor University
Department of Chemistry, Islamic Azad University-Qaemshahr Branch, Mazandaran, Iran
Islamic Azad University-Babol Branch
Islamic Azad University-Qaemshahr Branch
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
Fe3O4 (MNPS)
aniline derivative
aldehyde
ketone
amine
NaBH4
eng
Iranian chemical communication
2423-4958
2345-4806
2015-07-01
3
Issue 3, pp. 180-282,Serial No. 8
244
253
1231
Synthesis of neopentyl glycol and ethylene glycol esters by fatty acids in the presence of acidic ion exchange resin catalyst
Hadi Jabbari
hadijabbari@yahoo.com
1
Jabbar Khalafy
jkhalafi@yahoo.com
2
Peyman Najafi Moghadam
3
Department of Chemistry, Payame Noor University, P.O. BOX 19395-4697, Tehran, Iran.
Department of Chemistry, Faculty of Science, University of Urmia, Urmia 57153-165, Iran.
Department of Chemistry, Faculty of Science, University of Urmia, Urmia 57153-165, Iran.
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
Ethylenglycol esters
neopenthylglycol ester
fatty esters
synthetic lubricant ester
resin catalyst
eng
Iranian chemical communication
2423-4958
2345-4806
2015-07-01
3
Issue 3, pp. 180-282,Serial No. 8
254
265
1257
Synthesis, Characterization and interaction Studies of 1-(3-bromophenyl azo) 2,7-dihydroxy naphthalene, (BPADHN) with calf thymus deoxy ribo nucleic acid (ct-DNA)
Nasrin Sohrabi
nasrinsohrabi@yahoo.com
1
Maryam Dookheh
2
Department of Chemistry,Payame Noor University-Tehran-Iran
Department of Chemistry, Payame Noor University, P.O. BOX 19395-4697 Tehran, Iran
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
Deoxyribo nucleic acid
azo dye
thermodynamic
UV/Vis spectroscopy
eng
Iranian chemical communication
2423-4958
2345-4806
2015-07-01
3
Issue 3, pp. 180-282,Serial No. 8
266
275
1259
Magnetic force microscopy using fabricated cobalt-coated carbon nanotubes probes
Jamal Afzali
jamal.afzali@gmail.com
1
Sedigheh Sadegh Hassani
nsadeghhassani@yahoo.co.uk
2
Physics, Young Researchers Club and Elites, Islamic azad university, sanandaj branch, sanandaj, iran
Catalysis and Nanotechnology Research Division, Research Institute of Petroleum Industry, P. O. Box: 1485733111, Tehran, Iran
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
Magnetic force microscope
dielectrophoresis
carbon nanotube probe
MFM probe
eng
Iranian chemical communication
2423-4958
2345-4806
2015-07-01
3
Issue 3, pp. 180-282,Serial No. 8
276
282
1268
Denture base polymers, poly methyl methacrylate improved using free radical copolymerization
Abdoulhossien Massoudi
massoudihossein@yahoo.com.au
1
Azam Louie
o_louie2001@yahoo.com
2
Omid Louie
louie5556@gmail.com
3
Department of Chemistry, Payame Noor University, PB BOX 19395-4697, Tehran, Iran.
Department of Chemistry, Payame Noor University, PB BOX 19395-4697, Tehran, Iran.
Department of Chemistry, Payame Noor University, PO Box 19395-4697, Tehran, Iran
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
copolymer
poly methyl methacrylate (PMMA)
poly styrene(PSt)
tensile strength