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  Subjects -> CHEMISTRY (Total: 762 journals)
    - ANALYTICAL CHEMISTRY (45 journals)
    - CHEMISTRY (527 journals)
    - CRYSTALLOGRAPHY (22 journals)
    - ELECTROCHEMISTRY (24 journals)
    - INORGANIC CHEMISTRY (40 journals)
    - ORGANIC CHEMISTRY (40 journals)
    - PHYSICAL CHEMISTRY (64 journals)

CHEMISTRY (527 journals)                  1 2 3 4 5 6 | Last

Accreditation and Quality Assurance: Journal for Quality, Comparability and Reliability in Chemical Measurement     Hybrid Journal   (30 followers)
ACS Catalysis     Full-text available via subscription   (21 followers)
ACS Chemical Neuroscience     Full-text available via subscription   (10 followers)
ACS Combinatorial Science     Full-text available via subscription   (6 followers)
ACS Macro Letters     Full-text available via subscription   (16 followers)
ACS Medicinal Chemistry Letters     Full-text available via subscription   (16 followers)
ACS Nano     Full-text available via subscription   (154 followers)
ACS Photonics     Full-text available via subscription   (1 follower)
ACS Synthetic Biology     Full-text available via subscription   (7 followers)
Acta Chemica Iasi     Open Access  
Acta Chimica Slovaca     Open Access   (5 followers)
Acta Chromatographica     Full-text available via subscription   (9 followers)
Acta Facultatis Medicae Naissensis     Open Access   (1 follower)
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (2 followers)
adhäsion KLEBEN & DICHTEN     Hybrid Journal   (1 follower)
Adhesion Adhesives & Sealants     Hybrid Journal   (3 followers)
Adsorption Science & Technology     Full-text available via subscription   (5 followers)
Advanced Functional Materials     Hybrid Journal   (29 followers)
Advances in Chemical Engineering and Science     Open Access   (19 followers)
Advances in Chemical Science     Open Access   (6 followers)
Advances in Colloid and Interface Science     Full-text available via subscription   (12 followers)
Advances in Drug Research     Full-text available via subscription   (13 followers)
Advances in Fluorine Science     Full-text available via subscription   (6 followers)
Advances in Fuel Cells     Full-text available via subscription   (10 followers)
Advances in Heterocyclic Chemistry     Full-text available via subscription   (6 followers)
Advances in Materials Physics and Chemistry     Open Access   (7 followers)
Advances in Nanoparticles     Open Access   (9 followers)
Advances in Organometallic Chemistry     Full-text available via subscription   (7 followers)
Advances in Polymer Science     Hybrid Journal   (35 followers)
Advances in Protein Chemistry     Full-text available via subscription   (4 followers)
Advances in Protein Chemistry and Structural Biology     Full-text available via subscription   (8 followers)
Advances in Quantum Chemistry     Full-text available via subscription   (3 followers)
African Journal of Chemical Education     Open Access  
African Journal of Pure and Applied Chemistry     Open Access  
Afrique Science : Revue Internationale des Sciences et Technologie     Open Access  
Agrokémia és Talajtan     Full-text available via subscription   (2 followers)
Alchemy     Open Access   (2 followers)
Alkaloids: Chemical and Biological Perspectives     Full-text available via subscription   (3 followers)
AMB Express     Open Access   (1 follower)
Ambix     Hybrid Journal   (3 followers)
American Journal of Applied Sciences     Open Access   (27 followers)
American Journal of Biochemistry and Biotechnology     Open Access   (79 followers)
American Journal of Biochemistry and Molecular Biology     Open Access   (7 followers)
American Journal of Chemistry     Open Access   (14 followers)
American Journal of Plant Physiology     Open Access   (9 followers)
American Mineralogist     Full-text available via subscription   (2 followers)
Analyst     Full-text available via subscription   (33 followers)
Angewandte Chemie     Hybrid Journal   (12 followers)
Angewandte Chemie International Edition     Hybrid Journal   (142 followers)
Annales UMCS, Chemia     Open Access   (2 followers)
Annual Reports in Computational Chemistry     Full-text available via subscription   (1 follower)
Annual Reports Section A (Inorganic Chemistry)     Full-text available via subscription   (2 followers)
Annual Reports Section B (Organic Chemistry)     Full-text available via subscription   (4 followers)
Annual Review of Chemical and Biomolecular Engineering     Full-text available via subscription   (8 followers)
Annual Review of Food Science and Technology     Full-text available via subscription   (11 followers)
Anti-Infective Agents     Hybrid Journal   (1 follower)
Applied Organometallic Chemistry     Hybrid Journal   (3 followers)
Applied Spectroscopy     Full-text available via subscription   (11 followers)
Applied Surface Science     Hybrid Journal   (13 followers)
Arabian Journal of Chemistry     Full-text available via subscription   (5 followers)
ARKIVOC     Open Access   (1 follower)
Asian Journal of Biochemistry     Open Access   (1 follower)
Australian Journal of Chemistry     Hybrid Journal   (4 followers)
Autophagy     Full-text available via subscription  
Avances en Quimica     Open Access   (1 follower)
Biocell     Open Access  
Biochemical Pharmacology     Hybrid Journal   (5 followers)
Biochemistry     Full-text available via subscription   (120 followers)
Biochemistry Insights     Open Access   (3 followers)
Biochemistry Research International     Open Access   (3 followers)
BioChip Journal     Hybrid Journal   (1 follower)
Bioinorganic Chemistry and Applications     Open Access   (4 followers)
Biointerface Research in Applied Chemistry     Open Access   (1 follower)
Biointerphases     Open Access  
Biomacromolecules     Full-text available via subscription   (16 followers)
Biomass Conversion and Biorefinery     Partially Free   (5 followers)
Biomedical Chromatography     Hybrid Journal   (7 followers)
Biomolecular NMR Assignments     Hybrid Journal   (2 followers)
BioNanoScience     Partially Free   (4 followers)
Bioorganic & Medicinal Chemistry     Hybrid Journal   (26 followers)
Bioorganic & Medicinal Chemistry Letters     Hybrid Journal   (20 followers)
Bioorganic Chemistry     Hybrid Journal   (5 followers)
Biopolymers     Hybrid Journal   (12 followers)
Biosensors     Open Access   (3 followers)
Biotechnic and Histochemistry     Hybrid Journal   (1 follower)
Boletin de la Sociedad Chilena de Quimica     Open Access  
Bulletin of the Chemical Society of Ethiopia     Open Access   (1 follower)
Bulletin of the Chemical Society of Japan     Full-text available via subscription   (11 followers)
Canadian Association of Radiologists Journal     Full-text available via subscription   (3 followers)
Canadian Journal of Chemistry     Full-text available via subscription   (6 followers)
Canadian Mineralogist     Full-text available via subscription   (1 follower)
Carbohydrate Research     Hybrid Journal   (10 followers)
Carbon     Hybrid Journal   (33 followers)
Catalysis for Sustainable Energy     Open Access   (1 follower)
Catalysis Reviews: Science and Engineering     Hybrid Journal   (3 followers)
Catalysis Science and Technology     Free   (3 followers)
Catalysis Surveys from Asia     Hybrid Journal   (3 followers)
Catalysts     Open Access   (5 followers)
Cellulose     Hybrid Journal   (4 followers)
Central European Journal of Chemistry     Hybrid Journal   (5 followers)

        1 2 3 4 5 6 | Last

Chemistry and Materials Research    [11 followers]  Follow    
  This is an Open Access Journal Open Access journal
     ISSN (Print) 2224-3224 - ISSN (Online) 2225-0956
     Published by International Institute for Science, Technology and Education (IISTE) Homepage  [30 journals]
  • BET Surface Area Determination of Calcium Oxide from Adamawa Chalk Mineral
           Using Water Adsorption Method, for Use as Catalyst.
    • Authors: Aminu H. Isa, Funke W. Abdulrahman, Haruna D. Aliyu
      Abstract: This paper describes a test procedure for determining the total surface area of chalk mineral using the water adsorption method. The test involves saturating the thermally treated chalk sample with saturated salt solution of known relative humidity, until the water vapor forms a monomolecular layer on the treated chalk sample surface. The results of the test are expressed as Specific Surface Area (SSA), which describes the surface area/unit mass of dry treated sample with units of m2g-1. The test results presented demonstrate the BET isotherm of chalk samples after being thermally treated at 700, 900, 1100 and 1200oC. Results for a number of different treated chalk samples are presented. The proposed method uses simple and inexpensive laboratory equipment, is relatively simple to perform, and allows for rapid determination of SSA. Keywords: specific surface area, chalk mineral, water vapor, BET isotherm
      Issue No: Vol. 6
       
  • Synthesis And Spectroscopic Studies Of Tetrakis(Acetato)Copper(Ii)
           Dihydrate Complex.
    • Authors: Bull O.S, Obunwo C.C
      Abstract: Copper(II) tetrakis(acetato) dihydrate complex has been synthesized using standard laboratory methods involving precipitation, filtration, evaporation and  recrystallization. The synthesis was carried out in order to re-establish the chemical nature of metal complexes in their dimeric state.  Infrared spectra of ligand and complex were recorded. Atomic Absorption, Ultraviolet-Visible Spectroscopic Studies and melting points of the complex were also recorded. The colour change in the complexation of metal to the ligand was also recorded. Infrared spectral peak for the oxygen-metal (M-O) was 490 cm-1 for copper acetate. The Infrared Spectroscopic Studies showed that copper complexed with acetate ligand by the replacement of hydrogen in the OH bond of the acetate in one hand and another via a dative bond brought about by the oxygen atom in the C=O lone pair of electrons. Key words:  Synthesis, Spectroscopy, Tetrakis(Acetato)Copper(II), Complex.
      Issue No: Vol. 6
       
  • A Review on Synthesis of Silicon Nanowires by Laser Ablation
    • Authors: Naeem-ul-Hasan Saddiqi, Hassan Javed, Mohammad Islam, Khalid Mahmood Ghauri
      Abstract: Silicon (Si) is the most widely used semiconductor since many decades. Due to the developments in the synthesis and manufacturing technology new semiconductor materials have been introduced in semiconductor industry. Along with the newly developed semiconductors, Si is still considered the most reliable and durable semiconductor. The synthesis techniques of the Si have also been affected by the technological revolution and different Si based materials engineered at the nano-scale have been synthesized. Silicon nanowires (SiNWs) are one of the newly developed semiconductors of Si. SiNWs have interesting features due to their high aspect ratio and small size. The chemical, mechanical and electrical properties of SiNWs have opened new ways for the research in this field. Especially the charge carrying abilities and quantum confinement effects have gathered much attention of the scientific community. Different efforts have been made to synthesize SiNWs over the course of few years. Synthesis of SiNWs by laser ablation is one of the methods widely used due to its simplicity and good control over the parameters of the process. Different modifications have been made in this synthesis process by different researchers. The variations in laser ablation synthesis process and its outputs have been analyzed in this review paper. And effect of different parameters on the properties of SiNWs has been discussed. Keywords: Laser ablation, Nanowires, Supersaturation, Vapor liquid solid mechanism, Lithography, Catalyst
      Issue No: Vol. 6
       
  • Synthesis and characterization of the PMMA/ Sio2 hybrids by sol-gel method
    • Authors: Seenaa Ibrahem, Harith Ibrahem
      Abstract: This research describes the synthesis and  characterization of the organic –inorganic hybrid materials( (methyl methacrylate) (PMMA) and tetraethyl orthosilicate (TEOS))  film were fabricated using sol-gel technique T1=20/80,T2=50/50,T3=80/20. the ratios of PMMA/TEOS   (20\80,50/50,80/20) V/V,  .The  films were then  characterized using  FTIR, TGA ,and UV-VIS., the hybrids organic –inorganic film is devised by the assembly between silica xerogel and polymer with C=O group via hydrogen bonding  .The best  transmission of the ratio PMMA/TEOS  is ( 80/20),the thermal gravimetric analysis the  stable thermal with increasing PMMA content   . Keywords:-PMMA,TEOS,HYBRIS FILM,SOL-GEL
      Issue No: Vol. 6
       
  • Assessment of Level of Lead and Cadmium in Selected Plastic Toys Imported
           from China on the Ghanaian Market
    • Authors: Livingstone Kudjoe Gati, Leticia Bokor, Emmanuel Offoh
      Abstract: In recent times, the US had ban and ordered the recall of made in China toys on the US market on account of high levels of Lead (Pb) and Cadmium (Cd) content. The Ghanaian market is flooded with all manner of soft plastic toys manufactured in China. This research was therefore carried out to assess the level of Lead and Cadmium in randomly selected brand-new soft plastic toys manufactured in China. Thirty (30) different soft plastic toys were obtained from Makola and Kasoa markets and analysed for the level of Lead and Cadmium. The samples were digested and Inductively Coupled Plasma-Atomic Emission Spectrophotometer (ICP-AES) was used for the analysis. The result obtained from the analysis showed that both Lead and Cadmium were present in all the thirty toys giving positive result. Concentration of Cadmium was in the range of 0.0658 mg/kg to 0.5689 mg/kg whiles was in the range of 0.6876 mg/kg to 50.0806 mg/kg. The results recorded were lower than 100ppm and 200ppm respectively for lead and cadmium. set by the US standard. Both Lead and cadmium are cumulative toxicant that affects multiple body systems. Children are particularly vulnerable to the neurotoxic effects of lead, and even low levels of exposure can cause serious and, in some cases, irreversible neurological damage. The positive results in this study, the low levels notwithstanding, suggest that children who play with these toys are at risk of lead and cadmium exposure. The study therefore recommends the continuous monitoring of soft plastic toys on routine basis to check the level of Lead and Cadmium entering the Ghanaian. Keywords: concentration, digestion, assessment , heavy metals
      Issue No: Vol. 6
       
  • Gas Barrier Properties of Biodegradable Polymer Nanocomposites Films
    • Authors: Nadia Abbas Ali, Farah Tariq Mohammed Noori
      Abstract: Bionanocomposites from biopolymers and inorganic nanoparticles are of great interest for packaging materials due to their enhanced physical, thermal, mechanical, and processing characteristics. In this study polylactic acid and titanium oxide ( PLA/TiO2 ) films were prepared by casting method. The effect of structural, mechanical , thermal, and barrier  properties of  the nanocomposites were studied . Fourier transform infrared spectroscopy confirmed that no change in bonds of  PLA /TiO2. Increased glass transition temperature and thermal stability, compared with pure PLA. Mechanical properties (Tensile strength, Young Modulus) increased when add 1, 3,and 5wt% TiO2 compare with PLA(2.3, 2.5, 2.8 and 3)Gpa. Barrier properties (oxygen transmission rate) was decrease when the concentration of TiO2 is increased in  PLA/TiO2 film as (18, 16, and 14) cm3.mm/m2.day.atm, compare with neat PLA was 20 cm3.mm/m2.day.atm Key Words: Biodegradable, polylactic acid , titanium oxide ,  mechanical properties , thermal , and barrier properties .
      Issue No: Vol. 6
       
  • Synthesis and Structural studies of Novel Macro cyclic Ligand Type N2S3
           Donor atoms and Its Complexes with Some Transition Metals
    • Authors: MahmoudN. Al-jibouri, TaghreedM. Musa, Enas Z. Mohammad
      Abstract: A  new pentdentate potential ligand HL was prepared by condensation reaction of  2-mercapto-5-methyl-benzene -1,3-dicarboaldahyde II with 1,2–diaminoethylsulfide–1,2–dichloroethene I in presence of methanol as a solvent .The new derivative (HL) was identified on the basis of microelmental analysis, (C.H.N.S), 1HNMR, 13CNMR ,FT- IR and UV-Vis spectroscopies. (HL) has been used as chelating ligand to prepare a new series of first row transition element complexes at pH (6-9) range. The colored solid complexes were isolated and characterized on the basis of (C.H.N.S)elemental analyses, UV-Vis, FT.IR spectroscopy ,as well as the proton and carbon-13 NMR for  Zn,Cd and Hg(II) complexes were recorded to investigate the stereochemistry of the prepared complexes.The results obtained  from elemental , spectral data and magnetic susceptibility revealed  that all complexes were octahedral  geometries of  the general formula ,[MLCl]Cln, n=1 for  CrIII, FeIII and  n=0 for MnII, CoII ,NiII and CuII in contrast  ZnII, CdII and HgII complexes  were octahedral  of electrolytic behavior  in 1:1 suggesting the  formula [ML(H2O]Cl  , M= ZnII, CdII, HgII . Keywords -: metal complexes, structural study and polydentate ligands N2S3 system  
      Issue No: Vol. 6
       
  • Hydrogen Bonded Thermotropic Liquid Crystalline Properties of some New
           Schiff Basses
    • Authors: S.H. Ridha, A.J. Al-Najem
      Abstract: A new homologous series of Schiff bases ester,2-hydroxybenzylidineanilines:N-[4-(4,-n-(alkoxybenzoyloxy)-2-hydroxybenzylidine]-4,,-carboxyanilines   ( HAHC ) were    (n=1-10) synthesized and characterized by spectroscopic techniques (IR and 1HNMR) and microelemental analysis. Mesomorphic behavior and phase transitions were studied using polarized hot stage optical microscopy (POM) and differential scanning calorimetry (DSC). It has been found that the compounds with(C?-C?) of the series exhibit enantiotropic nematic phase only while those compounds with  (C?-C?) show smectic C in addition to nematic phase. While compounds with (C?-C??) show smectic C phase only. Key words: Schiff Basses Liquid crystals , Thermotropic liquid crystals, Nematic phase , Synthesis of Liquid Crystalline compounds , Smectic C phase , Hydrogen bonded liquid crystals phases
      Issue No: Vol. 6
       
  • Estimate and Classify the Hardness of Different Water Sources by Using
           Prepared Soap Solution
    • Authors: Layth Y. Qasim, Wafa K. Essa, Luay M. Qasim
      Abstract: This research includes available techniques and simplified methods to estimate and classify the quality of hardness for different water supply sources like sea water, various wells (Fayda, khabyar, jumbyar) and tap water of Basrah ,Mosul, Duhok and Baghdad, by using prepared soap solution from different commercial liquid soap with different concentration (SS1,2,3 , SS4,5,6 , SS7,8,9 ). The hardness of water is relative to the formation of foam (suds) when soap solution is added to water samples until a foam layer of a certain height (2cm) formed. We determine the volume (in drops, milliliter) of soap solution. If there is a lot of foam formed quickly with little soap solution, the water is rather soft. If you need to add a lot of soap solution to produce a certain height of foam, the water is rather hard. Many factor that establish during experiments, the quality of water supply, measuring degree of hardness, concentration of water samples. Compared with the results of laboratory tests for water stations of Mosul gave our method of encouraging and positive results to continue in the future, so liquid soap bubbles (foam) are a good indicator of classifying types of water. Key words: Estimate and classify the hardness of different water sources, New and simple calculations   
      Issue No: Vol. 6
       
  • Simple Method for the Removal of Mercury(II) from Its Aqueous Solution
           Using Aluminum as a Reducing Agent
    • Authors: Rayandra Asyhar
      Abstract: Removal of mercury(II) from its aqueous solution with the reduction technique by using aluminum metal as a reducing agent has been investigated. The experiments were performed by adding the amount weight of aluminum chips into testing solutions containing Hg(II) in various concentrations. Some factors studied in this investigation were pH and contact time. From the experimental data it is known that the temperature and contact time influenced on the reduction of Hg(II), where the optimum pH value and contact time of the reduction are 6 and 8 h, respectively. This simple method may be useful to remove the mercury(II) from any waste aqueous solution before their discharge into the environment. Keywords: Aluminum, aqueous solution, contact time, mercury(II), pH, reducing agent, removal.
      Issue No: Vol. 6
       
  • Syntheses, Characterization, and Antimicrobial Screening of
           N-(benzothiazol-2-yl)ethanesulphonamide and its Mn(IV), Co(II) and Zn(II)
           Complexes
    • Authors: Obasi N. L., Okoye C. O. B., Ukoha P. O., Anaga O. A.
      Abstract: N-(benzothiazol-2-yl)ethanesulphonamide (ES2ABT) was synthesized by the condensation of 2-aminobenzothiazole and ethanesulphonylchloride in acetone at 130°C. Three metal complexes of manganese(IV), cobalt(II) and zinc(II) of the ligand were synthesized. The compounds were characterized using magnetic susceptibility measurements, mass spectrometry, elemental microanalysis, UV/VIS-spectrophotometry, infrared, proton and 13C NMR spectroscopies. The antimicrobial tests of the ligand and its metal complexes were carried out on both multi-resistant bacterial strains isolated under clinical conditions and cultured species using agar-well diffusion method. The multi-resistant bacterial strains used were E. coli, P. species, P. aeroginosa and S. aureus which were isolated from dogs. The culture species were P. aeruginosa (ATCC 27853), E. coli (ATCC 25922), S. aureus (ATCC 25923), and the fungi, C. krusei (ATCC 6258) and C. albicans (ATCC 90028). The tests were both in vitro and in vivo. The antimicrobial activities of the compounds were compared with those of Ciprofloxacin and trimethoprim-sulphamethoxazole as antibacterial agents and Fluconazole as an antifungal drug. All the compounds showed varying activities against the cultured typed bacteria and fungi used. The Lethal Concentration (LC50) ranged from <1.00-718.00±56.6 ppm. These are within the permissible concentrations. Key words: N-(benzothiazol-2-yl)ethanesulphonamide, Metal complexes, Antimicrobial,  in vitro, in vivo
      Issue No: Vol. 6
       
 
 
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