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Synthesis and Antimicrobial Activity of Novel Series of Diversely Substituted Acetyl Pyrazoline Bearing Biphenyl Carbonitrile Motif 新型含联苯碳腈多取代乙酰吡唑啉基序的合成及抗菌活性研究
International Letters of Chemistry, Physics and Astronomy Pub Date : 2016-08-01 DOI: 10.18052/WWW.SCIPRESS.COM/ILCPA.69.42
P. N. Patel, Denish C. Karia
{"title":"Synthesis and Antimicrobial Activity of Novel Series of Diversely Substituted Acetyl Pyrazoline Bearing Biphenyl Carbonitrile Motif","authors":"P. N. Patel, Denish C. Karia","doi":"10.18052/WWW.SCIPRESS.COM/ILCPA.69.42","DOIUrl":"https://doi.org/10.18052/WWW.SCIPRESS.COM/ILCPA.69.42","url":null,"abstract":"Novel series of diversely substituted acetyl pyrazoline having biphenyl carbonitrile motif have been synthesized. The reaction of 2-cyno-4’-bromomethyl biphenyl with1-(4-hydroxy-phenyl)-ethanone resulted in acetophenone derivative of biphenyl-2-carbonitrile. This acetophenone derivative was condensed with substituted aromatic aldehyde in mixed solvent resulted in various substituted chalcones. These chalcones were further cyclized using hydrazine hydrate in presence of glacial acetic acid to produce titled compound derivatives. The chemical structures of synthesized compounds were elucidated by 1H-NMR, 13C-NMR FT-IR and mass spectra. Synthesized compounds were screened for their antimicrobial activity by broth dilution method. Out of twelve newly synthesized compounds, eight compounds are found to be equipotent to Ampicillin.","PeriodicalId":14453,"journal":{"name":"International Letters of Chemistry, Physics and Astronomy","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73475659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation and Study of CdO-CdO 2 Nanoparticles for Solar Cells Applications 太阳能电池用CdO-CdO纳米颗粒的制备与研究
International Letters of Chemistry, Physics and Astronomy Pub Date : 2016-08-01 DOI: 10.18052/WWW.SCIPRESS.COM/ILCPA.69.34
Muneer H. Jadduaa, N. Habubi, Alaa Z. Ckal
{"title":"Preparation and Study of CdO-CdO 2 Nanoparticles for Solar Cells Applications","authors":"Muneer H. Jadduaa, N. Habubi, Alaa Z. Ckal","doi":"10.18052/WWW.SCIPRESS.COM/ILCPA.69.34","DOIUrl":"https://doi.org/10.18052/WWW.SCIPRESS.COM/ILCPA.69.34","url":null,"abstract":"In this study, CdO-CdO 2 thin films, which was prepared by chemical method and deposited by drop casting technique on glass and silicon substrates have been studied. The structural, optical and chemical analysis were investigated. X-ray diffraction (XRD) measurements reveal that the CdO-CdO 2 thin film was polycrystalline, cubic structure and there is no trace of the other material. UV-Vis measurements assure that the energy gap of CdO-CdO 2 thin film was found to be 2.5eV. I-V characterization of the solar cell under illumination at 40mW/cm² fluence was investigated. The open circuit voltage (V oc ) was 4.1V and short-circuit current density (I sc ) was 1.44 mA. These measurements show that the fill factor (FF) and the conversion efficiency (η), were 36.2% and 6.8% respectively.","PeriodicalId":14453,"journal":{"name":"International Letters of Chemistry, Physics and Astronomy","volume":"42 1","pages":"34-41"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87848002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Synthesis and Nitration of 7-Hydroxy-4-Methyl Coumarin via Pechmann Condensation Using Eco-Friendly Medias 生态介质下7-羟基-4-甲基香豆素的Pechmann缩合合成及硝化研究
International Letters of Chemistry, Physics and Astronomy Pub Date : 2016-08-01 DOI: 10.18052/WWW.SCIPRESS.COM/ILCPA.69.66
Fadia Al Haj Hussien, Mohammad Keshe, Khaled Alzobar, Joumaa Merza, Ayman Karam
{"title":"Synthesis and Nitration of 7-Hydroxy-4-Methyl Coumarin via Pechmann Condensation Using Eco-Friendly Medias","authors":"Fadia Al Haj Hussien, Mohammad Keshe, Khaled Alzobar, Joumaa Merza, Ayman Karam","doi":"10.18052/WWW.SCIPRESS.COM/ILCPA.69.66","DOIUrl":"https://doi.org/10.18052/WWW.SCIPRESS.COM/ILCPA.69.66","url":null,"abstract":"A nitro coumarin derivatives has been synthesized via nitration of 7-hydroxy-4-methyl coumarin wich was synthesized via Pechmann condensation resorcinol with a β-ketoester using Amberlyst-15 as a green and efficient catalyst and by caring out the reaction of resorcinol and ethyl acetoacetate (with 1: 1 mol ratio) in the presence of 0.2 g of Amberlyst-15 at 110°C under solvent-free conditions. These nitro coumarin derivatives have biological activity and momentousness in the industrial fields. The purified products were measured the melting points and characterized by spectral methods: FT-IR, 1H-NMR , 13C-NMR.","PeriodicalId":14453,"journal":{"name":"International Letters of Chemistry, Physics and Astronomy","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87230510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Removal of Methylene Blue Dye Pollutant from Aqueous Solution Using Sugar Cane Bark and Chaff Biomass 利用甘蔗皮和糠生物质去除水溶液中的亚甲基蓝染料污染物
International Letters of Chemistry, Physics and Astronomy Pub Date : 2016-08-01 DOI: 10.18052/WWW.SCIPRESS.COM/ILCPA.69.49
Veronica O. Onyeocha, K. Onwukamike, V. Njoku, M. A. Chidiebere, Emeka Emanuel Oguzie
{"title":"Removal of Methylene Blue Dye Pollutant from Aqueous Solution Using Sugar Cane Bark and Chaff Biomass","authors":"Veronica O. Onyeocha, K. Onwukamike, V. Njoku, M. A. Chidiebere, Emeka Emanuel Oguzie","doi":"10.18052/WWW.SCIPRESS.COM/ILCPA.69.49","DOIUrl":"https://doi.org/10.18052/WWW.SCIPRESS.COM/ILCPA.69.49","url":null,"abstract":"The removal of Methylene blue (MB) dye pollutant from aqueous solution using sugar cane bark (SCB) and chaff (SCC) was studied using batch experiments. The operating variables studied were initial biomass dose, initial dye concentration, contact time, pH and temperature. The result revealed that the amount of MB dye uptake, qe (mg/g) increased with an increase in temperature, dye concentration and contact time, but decreased with an increase in adsorbent dosage. Equilibrium data were found to obey Langmuir isotherm for both biomass, showing a monolayer adsorption mechanism. The monolayer sorption capacity of SCB and SCC for MB dye were found to be 1.282mg/g and 1.706mg/g, respectively at 303K. The thermodynamics parameters of the MB / biomass system indicate spontaneous (ΔG◦ <0) and endothermic (ΔH > 0) process. The study show that SCB and SCC which are common environmental wastes can be used for the treatment of MB dye polluted water.","PeriodicalId":14453,"journal":{"name":"International Letters of Chemistry, Physics and Astronomy","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83243177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Cephradine Intercalated Mg-Al Layered Double Hydroxide 头孢拉定嵌入镁铝层状双氢氧化物
International Letters of Chemistry, Physics and Astronomy Pub Date : 2016-08-01 DOI: 10.18052/WWW.SCIPRESS.COM/ILCPA.69.1
Ashaduzzaman, Nashid Kaisher Riyadh, Nusrat Mustary, S. Shamsuddin
{"title":"Cephradine Intercalated Mg-Al Layered Double Hydroxide","authors":"Ashaduzzaman, Nashid Kaisher Riyadh, Nusrat Mustary, S. Shamsuddin","doi":"10.18052/WWW.SCIPRESS.COM/ILCPA.69.1","DOIUrl":"https://doi.org/10.18052/WWW.SCIPRESS.COM/ILCPA.69.1","url":null,"abstract":"Engineered advanced functional materials are promising candidates for biotechnology and biomedical science. Mg-Al layered double hydroxide (LDH), anionic or hydrotalcite-like clays consist of positively charged layers and exchangeable anions along with water molecules in the interlayer space were synthesized from homogeneous solution of MgCl2 and AlCl3 by urea induced co-precipitation method. A pharmaceutically important drug, cephradine was intercalated with synthesized LDH in alkali media (pH 10) by in-situ technique. Characterizations of the products were carried out using Attenuated Total Reflectance Infra-red (ATR-IR), Energy Dispersive X-ray (EDX) and X-ray Diffraction (XRD) spectroscopy. Scanning electron morphological images envisaged a distinct crystalline and amorphous phases of Mg-Al LDH before and after modification with cephradine. Intercalation of bioactive molecules with LDH would enhance their stability providing sustained release behavior in physiological environment.","PeriodicalId":14453,"journal":{"name":"International Letters of Chemistry, Physics and Astronomy","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82164088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inhibition of Acid Corrosion of Mild Steel Using Delonix regia Leaves Extract 龙葵叶提取物对低碳钢酸蚀的抑制作用
International Letters of Chemistry, Physics and Astronomy Pub Date : 2016-08-01 DOI: 10.18052/WWW.SCIPRESS.COM/ILCPA.69.74
M. A. Chidiebere, L. Nnanna, A. Blessing, K. Oguzie, Okolue Beluonwu, Onyeachu Benedict, Emeka Emanuel Oguzie
{"title":"Inhibition of Acid Corrosion of Mild Steel Using Delonix regia Leaves Extract","authors":"M. A. Chidiebere, L. Nnanna, A. Blessing, K. Oguzie, Okolue Beluonwu, Onyeachu Benedict, Emeka Emanuel Oguzie","doi":"10.18052/WWW.SCIPRESS.COM/ILCPA.69.74","DOIUrl":"https://doi.org/10.18052/WWW.SCIPRESS.COM/ILCPA.69.74","url":null,"abstract":"The inhibition efficacy of aqueous extracts of the leaves of Delonixregia (DR) in 1 M HCl and 0.5 M H2SO4 have been investigated using weight loss, electrochemical and surface probe techniques. DR extract inhibited mild steel corrosion in both acidic environments via adsorption of the extract organic matter on the metal/solution interface. Potentiodynamic polarization results indicate that DR is a mixed type inhibitor in both acidic environments, whereas the impedance results revealed adsorption of the DR species on a corroding steel surface. Increase in inhibition efficiency was concentration dependent. The adsorption followed Langmuir adsorption isotherm. Scanning electron microscopy (SEM) results revealed the formation of a protective layer adsorbed on a mild steel surface in the acid solutions.","PeriodicalId":14453,"journal":{"name":"International Letters of Chemistry, Physics and Astronomy","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88278579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
Guest-Host Inclusion Complex Formation of 2-, 3-, and 4-Aminobenzoic Acids with Native and Modified Cyclodextrins 天然和修饰环糊精形成2-、3-和4-氨基苯甲酸的主-主包合物
International Letters of Chemistry, Physics and Astronomy Pub Date : 2016-08-01 DOI: 10.18052/WWW.SCIPRESS.COM/ILCPA.69.10
N. Rajendiran, J. Thulasidhasan, M. Jenita
{"title":"Guest-Host Inclusion Complex Formation of 2-, 3-, and 4-Aminobenzoic Acids with Native and Modified Cyclodextrins","authors":"N. Rajendiran, J. Thulasidhasan, M. Jenita","doi":"10.18052/WWW.SCIPRESS.COM/ILCPA.69.10","DOIUrl":"https://doi.org/10.18052/WWW.SCIPRESS.COM/ILCPA.69.10","url":null,"abstract":"The inclusion complexation of 2-aminobenzoic acid (2ABA), 3-aminobenzoic acid (3ABA), and 4-aminobenzoic acid (4ABA) with α-cyclodextrin (α-CD), β-cyclodextrin (β-CD), hydroxypropyl-α-cyclodextrin (HP-α-CD) and hydroxypropyl-β-cyclodextrin (HP-β-CD) were studied in buffer solutions of different pHs (pH~1 and pH~7) and it was carried out using UV-Visible, steady-state and time-resolved fluorescence. Dual fluorescence was observed for all the compounds in aqueous and CD medium. All the ABAs forms 1:1 inclusion complex at pH ~ 1 solution and mixture of 1:1 and 1:2 inclusion complex at pH ~7. With CDs, dual luminescence appeared at pH ~ 1 indicates, both NH3+ and COOH groups are present in the interior of the CDs cavities. FT-IR, 1H NMR, results suggest ABAs formed a stable inclusion complex with the CDs.","PeriodicalId":14453,"journal":{"name":"International Letters of Chemistry, Physics and Astronomy","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86832793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Crystal Surface/Liquid Crystal Interfacial Polymerisation: Preparation of Helical π-Conjugated Polymer on Mineral Crystal 晶体表面/液晶界面聚合:在矿物晶体上制备螺旋π共轭聚合物
International Letters of Chemistry, Physics and Astronomy Pub Date : 2016-08-01 DOI: 10.18052/WWW.SCIPRESS.COM/ILCPA.69.58
Y. Kudo, Kawabata Kosuke, H. Goto
{"title":"Crystal Surface/Liquid Crystal Interfacial Polymerisation: Preparation of Helical π-Conjugated Polymer on Mineral Crystal","authors":"Y. Kudo, Kawabata Kosuke, H. Goto","doi":"10.18052/WWW.SCIPRESS.COM/ILCPA.69.58","DOIUrl":"https://doi.org/10.18052/WWW.SCIPRESS.COM/ILCPA.69.58","url":null,"abstract":"Crystal surface/liquid crystal interfacial polymerisation was developed. Poly(3,4-ethylenedioxythiophene) (PEDOT, EDOT = ethylene dioxythiophene) and poly(EDOT-fluorene-EDOT) were prepared in a cholesteric liquid crystal electrolyte solution on the surface of pyrite. Polymerisation in liquid crystal produces polymers showing fingerprint structure through transcription of molecular aggregation in the polymerisation process. Surface structures of the polymers were observed with circular polarised differential interference contrast microscopy (C-DIM) and scanning electron microscopy (SEM). The polymerisation reaction proceeds interface between liquid crystal and pyrite surface. The polymers thus prepared in liquid crystal on the pyrite shows fingerprint structure on steps structure of pyrite. This is a first report of liquid crystal interfacial electrochemical polymerisation on a natural mineral crystal.","PeriodicalId":14453,"journal":{"name":"International Letters of Chemistry, Physics and Astronomy","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90898415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermodynamic and Equilibrium Studies of Dextrin Adsorption on Modified Coal 糊精在改性煤上吸附的热力学与平衡研究
International Letters of Chemistry, Physics and Astronomy Pub Date : 2016-08-01 DOI: 10.18052/WWW.SCIPRESS.COM/ILCPA.69.22
Okoji Josephine Nkechi, J. I. Okolie, N. J. Okorocha
{"title":"Thermodynamic and Equilibrium Studies of Dextrin Adsorption on Modified Coal","authors":"Okoji Josephine Nkechi, J. I. Okolie, N. J. Okorocha","doi":"10.18052/WWW.SCIPRESS.COM/ILCPA.69.22","DOIUrl":"https://doi.org/10.18052/WWW.SCIPRESS.COM/ILCPA.69.22","url":null,"abstract":"Dextrin produced from cassava was investigated for adsorption on coal during processing. Aluminium ion (Al3+) and nitrate ion (NO3-) were employed for adsorption test to improve coal surfaces. The effect of initial concentration, adsorbent dose and pH on dextrin adsorption onto modified coal surface was investigated. Studies concerning the adsorption equilibrium and thermodynamics are presented; the equilibrium data was modelled using Langmuir and Freundlich isotherms. The adsorption equilibrium data was well explained by Freundlich isotherm. The percentage removal was found to be 93.75% and 90.75% at adsorbent dose of 0.2 g for both aluminium sulphate coal bituminous (ACB) and aluminium sulphate coal lignite (ACL) respectively. There was a rapid increase in adsorption of dextrin from low pH of 2 to about pH of 4 with a plateau region from pH 4 to pH 6. Adsorption capacity of 61.25 mg/g and 55.00 mg/g was achieved at initial concentration of 200 mg/L for ACB and ACL respectively. For a better interpretation, the nature of the adsorption of dextrin on the prepared coal samples was predicted from thermodynamic point of view by estimating the thermodynamic parameters. The determination of basic thermodynamic parameters: enthalpy of adsorption, Gibb’s free energy and entropy of adsorption are important. The negative value of ∆Gad indicates the feasibility and spontaneity of the adsorption process and the magnitude is an indication of the involvement of salt link, electrostatic interaction and hydrophobic bonding in the adsorption.","PeriodicalId":14453,"journal":{"name":"International Letters of Chemistry, Physics and Astronomy","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79966254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optical Study on Deposed Polystyrene Doped DCM Laser Dye Thin Films at Different Temperature 不同温度下沉积聚苯乙烯掺杂DCM激光染料薄膜的光学研究
International Letters of Chemistry, Physics and Astronomy Pub Date : 2016-07-01 DOI: 10.18052/WWW.SCIPRESS.COM/ILCPA.68.39
A. Tuhaiwer
{"title":"Optical Study on Deposed Polystyrene Doped DCM Laser Dye Thin Films at Different Temperature","authors":"A. Tuhaiwer","doi":"10.18052/WWW.SCIPRESS.COM/ILCPA.68.39","DOIUrl":"https://doi.org/10.18052/WWW.SCIPRESS.COM/ILCPA.68.39","url":null,"abstract":"Polystyrene (PS) polymer doped with DCM laser dye thin films have prepared on glass substrate using casting method. The obtained PS doped with DCM thin films were treated at different annealing temperatures such (30, 40, 50, 60, 70) °C. It was observed from result that the allowed direct electronic transitions energy gap was increased from 2.21 up to 2.3e.V as the temperature increasing from 30-70°C. And the allowed indirect electronic transition energy gap rose from 0.06 to 0.15e.V as the temperature increasing. The allowed indirect phonon energy also was decreased at the same range of temperature. The different effect of temperature variation was observed on the optical properties of PS doped with DCM thin films.","PeriodicalId":14453,"journal":{"name":"International Letters of Chemistry, Physics and Astronomy","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78994666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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