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  Subjects -> CHEMISTRY (Total: 922 journals)
    - ANALYTICAL CHEMISTRY (56 journals)
    - CHEMISTRY (656 journals)
    - CRYSTALLOGRAPHY (21 journals)
    - ELECTROCHEMISTRY (27 journals)
    - INORGANIC CHEMISTRY (43 journals)
    - ORGANIC CHEMISTRY (48 journals)
    - PHYSICAL CHEMISTRY (71 journals)

CHEMISTRY (656 journals)            First | 1 2 3 4 | Last

Showing 401 - 600 of 735 Journals sorted alphabetically
Journal of Pure and Applied Chemistry Research     Open Access   (Followers: 3)
Journal of Raman Spectroscopy     Hybrid Journal   (Followers: 17)
Journal of Research Updates in Polymer Science     Hybrid Journal   (Followers: 3)
Journal of Saudi Chemical Society     Open Access  
Journal of Solid State Chemistry     Hybrid Journal   (Followers: 14)
Journal of Solution Chemistry     Hybrid Journal   (Followers: 2)
Journal of Structural Chemistry     Hybrid Journal   (Followers: 1)
Journal of Sulfur Chemistry     Hybrid Journal   (Followers: 3)
Journal of Supercritical Fluids     Hybrid Journal   (Followers: 4)
Journal of Superhard Materials     Hybrid Journal   (Followers: 1)
Journal of Surface Science and Technology     Hybrid Journal  
Journal of Surfactants and Detergents     Hybrid Journal   (Followers: 3)
Journal of Taibah University for Science     Open Access   (Followers: 1)
Journal of the American Chemical Society     Hybrid Journal   (Followers: 378)
Journal of the American Society for Mass Spectrometry     Hybrid Journal   (Followers: 31)
Journal of the American Society of Brewing Chemists     Full-text available via subscription   (Followers: 3)
Journal of the Bangladesh Chemical Society     Open Access  
Journal of the Chilean Chemical Society     Open Access   (Followers: 2)
Journal of the Iranian Chemical Society     Hybrid Journal  
Journal of the Korean Society for Applied Biological Chemistry     Hybrid Journal   (Followers: 1)
Journal of the Mexican Chemical Society     Open Access   (Followers: 2)
Journal of the Serbian Chemical Society     Open Access  
Journal of the Turkish Chemical Society, Section A : Chemistry     Open Access  
Journal of Theoretical and Computational Chemistry     Hybrid Journal   (Followers: 10)
JPC - Journal of Planar Chromatography - Modern TLC     Full-text available via subscription   (Followers: 2)
Jurnal Inovasi Pendidikan Kimia     Open Access   (Followers: 5)
Jurnal Katalisator     Open Access  
Jurnal Kimia (Journal of Chemistry)     Open Access  
Jurnal Kimia Riset     Open Access  
Jurnal Penelitian Sains (JPS)     Open Access  
Karadeniz Chemical Science and Technology     Open Access  
Karbala International Journal of Modern Science     Open Access   (Followers: 3)
Kinetics and Catalysis     Hybrid Journal   (Followers: 5)
Konfigurasi : Jurnal Pendidikan Kimia dan Terapan     Open Access  
Korea-Australia Rheology Journal     Hybrid Journal  
Langmuir     Hybrid Journal   (Followers: 64)
Latvian Journal of Chemistry     Open Access   (Followers: 1)
Lebensmittelchemie     Hybrid Journal   (Followers: 1)
Lipid Insights     Open Access  
Luminescence     Hybrid Journal   (Followers: 5)
Macromolecular Materials & Engineering     Hybrid Journal   (Followers: 5)
Macromolecular Rapid Communications     Hybrid Journal   (Followers: 10)
Macromolecular Research     Hybrid Journal   (Followers: 2)
Macromolecular Symposia     Hybrid Journal   (Followers: 3)
Macromolecular Theory and Simulations     Hybrid Journal   (Followers: 2)
Macromolecules     Hybrid Journal   (Followers: 52)
Maghrebian Journal of Pure and Applied Science     Full-text available via subscription  
Magnetic Resonance in Chemistry     Hybrid Journal   (Followers: 10)
Magnetochemistry     Open Access  
Marine Chemistry     Hybrid Journal   (Followers: 7)
Marine Drugs     Open Access   (Followers: 3)
MATEC Web of Conferences     Open Access   (Followers: 5)
Materials Characterization     Hybrid Journal   (Followers: 35)
Materials Chemistry Frontiers     Full-text available via subscription  
Materials Horizons     Full-text available via subscription   (Followers: 3)
Materials Research Bulletin     Hybrid Journal   (Followers: 28)
Materials Science Monographs     Full-text available via subscription   (Followers: 3)
Materials Science-Poland     Open Access   (Followers: 1)
Materials Sciences and Applications     Open Access   (Followers: 3)
MedChemComm     Full-text available via subscription   (Followers: 6)
Medicinal Chemistry Research     Hybrid Journal   (Followers: 12)
Mediterranean Journal of Chemistry     Open Access  
Metallography, Microstructure, and Analysis     Hybrid Journal   (Followers: 2)
Metallomics     Full-text available via subscription  
Micro and Nano Systems Letters     Open Access   (Followers: 6)
Microchimica Acta     Hybrid Journal   (Followers: 2)
Microporous and Mesoporous Materials     Hybrid Journal   (Followers: 10)
Modern Chemistry & Applications     Open Access   (Followers: 1)
Modern Research in Catalysis     Open Access   (Followers: 1)
Molbank     Open Access   (Followers: 1)
Molecular Astrophysics     Full-text available via subscription   (Followers: 1)
Molecules     Open Access   (Followers: 7)
Molecules and Cells     Hybrid Journal   (Followers: 1)
Monatshefte für Chemie - Chemical Monthly     Hybrid Journal   (Followers: 4)
Mongolian Journal of Chemistry     Open Access  
Moroccan Journal of Chemistry     Open Access  
Moroccan Journal of Heterocyclic Chemistry     Open Access  
Moscow University Chemistry Bulletin     Hybrid Journal   (Followers: 1)
MRS Bulletin     Full-text available via subscription   (Followers: 4)
MRS Online Proceedings     Full-text available via subscription   (Followers: 1)
Nachrichten aus der Chemie     Hybrid Journal   (Followers: 17)
Nano Convergence     Open Access   (Followers: 1)
Nano Reviews & Experiments     Open Access   (Followers: 14)
Nanochemistry Research     Open Access  
Nanocontainers     Open Access   (Followers: 1)
Nanomaterials and the Environment     Open Access   (Followers: 1)
Nanoscale     Full-text available via subscription   (Followers: 20)
Nanoscale Advances     Open Access   (Followers: 1)
Nanoscale Research Letters     Open Access   (Followers: 9)
Nanoscience and Nanotechnology Letters     Full-text available via subscription   (Followers: 22)
Nanospectroscopy     Open Access   (Followers: 2)
Natural Product Reports     Full-text available via subscription   (Followers: 10)
Natural Products Chemistry & Research     Open Access   (Followers: 1)
Natural Products Journal     Hybrid Journal   (Followers: 1)
Natural Science     Open Access   (Followers: 9)
Natural Volatiles & Essential Oils     Open Access  
Nature Chemistry     Full-text available via subscription   (Followers: 92)
Nature Protocols     Full-text available via subscription   (Followers: 72)
Nature Reviews Chemistry     Hybrid Journal   (Followers: 8)
New Journal of Chemistry     Full-text available via subscription   (Followers: 20)
Nitric Oxide     Hybrid Journal  
Nitrogen     Open Access   (Followers: 1)
Nova Biotechnologica et Chimica     Open Access  
Nukleonika     Open Access   (Followers: 2)
Open Chemistry     Open Access   (Followers: 6)
Open Chemistry Journal     Open Access  
Open Conference Proceedings Journal     Open Access  
Open Journal of Composite Materials     Open Access   (Followers: 20)
Open Journal of Inorganic Non-metallic Materials     Open Access   (Followers: 4)
Open Journal of Medicinal Chemistry     Open Access   (Followers: 5)
Open Journal of Polymer Chemistry     Open Access   (Followers: 13)
Open Journal of Synthesis Theory and Applications     Open Access  
Open Medicinal Chemistry Journal     Open Access  
Orbital - The Electronic Journal of Chemistry     Open Access   (Followers: 3)
Organic & Biomolecular Chemistry     Full-text available via subscription   (Followers: 74)
Organometallics     Hybrid Journal   (Followers: 22)
Organosulfur Chemistry     Full-text available via subscription  
Oxidation of Metals     Hybrid Journal   (Followers: 18)
Peptidomics     Open Access  
Pharmaceuticals     Open Access   (Followers: 6)
Pharmaceutics     Open Access   (Followers: 4)
Phosphorus, Sulfur, and Silicon and the Related Elements     Hybrid Journal   (Followers: 2)
Photochemistry and Photobiology     Hybrid Journal   (Followers: 4)
Physical Sciences Reviews     Hybrid Journal   (Followers: 1)
Physics and Materials Chemistry     Open Access   (Followers: 2)
Phytochemistry     Hybrid Journal   (Followers: 6)
Phytochemistry Letters     Full-text available via subscription   (Followers: 4)
Plasma     Open Access   (Followers: 2)
Plasma Chemistry and Plasma Processing     Hybrid Journal   (Followers: 6)
Polímeros : Ciência e Tecnologia     Open Access  
Polycyclic Aromatic Compounds     Hybrid Journal  
Polyhedron     Hybrid Journal   (Followers: 4)
Polymer Chemistry     Full-text available via subscription   (Followers: 25)
Polymer Degradation and Stability     Hybrid Journal   (Followers: 26)
Polymer Engineering & Science     Hybrid Journal   (Followers: 17)
Polymer Reviews     Hybrid Journal   (Followers: 36)
Polymer Science Series D     Hybrid Journal   (Followers: 4)
Polymer Testing     Hybrid Journal   (Followers: 129)
Polymer-Plastics Technology and Engineering     Hybrid Journal   (Followers: 5)
Polymers     Open Access   (Followers: 19)
Procedia Chemistry     Open Access  
Proceedings in Radiochemistry. A Supplement to Radiochimica Acta     Open Access   (Followers: 1)
Proceedings of the Combustion Institute     Full-text available via subscription   (Followers: 8)
Processes     Open Access  
Progress in Heterocyclic Chemistry     Full-text available via subscription   (Followers: 1)
Progress in Lipid Research     Hybrid Journal   (Followers: 3)
Progress in Organic Coatings     Hybrid Journal   (Followers: 9)
Progress in Polymer Science     Full-text available via subscription   (Followers: 37)
Progress in Reaction Kinetics and Mechanism     Full-text available via subscription   (Followers: 2)
Progress in Solid State Chemistry     Full-text available via subscription   (Followers: 3)
Progress in Surface Science     Full-text available via subscription   (Followers: 4)
Protein Science     Hybrid Journal   (Followers: 46)
Pure and Applied Chemistry     Hybrid Journal   (Followers: 8)
Química Nova     Open Access  
Quimica Viva     Open Access  
Radiochemistry     Hybrid Journal   (Followers: 2)
Rapid Communications in Mass Spectrometry     Hybrid Journal   (Followers: 31)
Reaction Chemistry & Engineering     Hybrid Journal  
Reaction Kinetics, Mechanisms and Catalysis     Hybrid Journal   (Followers: 2)
Recent Advances in Phytochemistry     Full-text available via subscription   (Followers: 3)
Recyclable Catalysis     Open Access   (Followers: 2)
Reports in Theoretical Chemistry     Open Access  
Research and Reports in Medicinal Chemistry     Open Access   (Followers: 3)
Research Journal of Phytochemistry     Open Access   (Followers: 3)
Review Journal of Chemistry     Hybrid Journal  
Reviews in Chemical Engineering     Hybrid Journal   (Followers: 6)
Reviews in Mineralogy and Geochemistry     Hybrid Journal   (Followers: 4)
Reviews of Adhesion and Adhesives     Full-text available via subscription  
Revista Boliviana de Química     Open Access  
Revista CENIC. Ciencias Quimicas     Open Access   (Followers: 2)
Revista Ciências Exatas e Naturais : RECEN     Open Access  
Revista Colombiana de Química     Open Access   (Followers: 1)
Revista Cubana de Química     Open Access  
Revista de Ciencia y Tecnología     Open Access  
Revista de Ciencias     Open Access  
Revista de la Societat Catalana de Química     Open Access  
Revista Debates em Ensino de Química     Open Access  
Revista ION     Open Access  
Revista Química : ciência, tecnologia e sociedade     Open Access  
RHAZES : Green and Applied Chemistry     Open Access  
RSC Advances     Open Access   (Followers: 33)
Rubber Chemistry and Technology     Full-text available via subscription   (Followers: 2)
Russian Chemical Reviews     Full-text available via subscription   (Followers: 4)
Russian Journal of Bioorganic Chemistry     Hybrid Journal   (Followers: 2)
Russian Journal of Coordination Chemistry     Hybrid Journal   (Followers: 1)
Russian Journal of General Chemistry     Hybrid Journal   (Followers: 1)
Russian Journal of Inorganic Chemistry     Hybrid Journal  
Sainstek : Jurnal Sains dan Teknologi     Open Access  
Science China Chemistry     Hybrid Journal   (Followers: 2)
Sciences & Technologie A : sciences exactes     Open Access  
Scientific Journal of Frontier Chemical Development     Open Access   (Followers: 2)
Scientific Reports     Open Access   (Followers: 76)
Sensors and Actuators B: Chemical     Hybrid Journal   (Followers: 17)
Separation & Purification Reviews     Hybrid Journal   (Followers: 8)
Separation Science and Technology     Hybrid Journal   (Followers: 14)
Separations     Open Access   (Followers: 6)
Silicon Chemistry     Hybrid Journal   (Followers: 2)
Smart Materials Research     Open Access   (Followers: 7)
Soft     Open Access  
Soft Nanoscience Letters     Open Access   (Followers: 2)

  First | 1 2 3 4 | Last

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Journal of the Bangladesh Chemical Society
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1022-016X
Published by Bangladesh Journals Online Homepage  [107 journals]
  • Synthesis And Characterization Of Methyl 4, 6-O-Enzylidene-
           Α-D-Glucopyranoside Derivatives

    • Authors: Sarkar MA Kawsar, Abul KMS Kabir, MOhammad MR Bhuiyan, Mohammad M Manik
      Pages: 101 - 109
      Abstract: Regioselective benzoylation of methyl 4,6-O-benzylidene-α-D-glucopyranoside (1) using direct acylation method furnished the methyl 4,6-O-benzylidene-2-O-(4-t-butylbenzoyl)- α-D-glucopyranoside (2) in an excellent yield. In order to obtain newer products for antimicrobial screening studies, the 2-O-4-t-butylbenzoyl derivative was further transformed to a series of 3-O-acyl derivatives (2-12) containing a wide variety of functionalities in a single molecular framework. Journal of Bangladesh Chemical Society, Vol. 25(2), 101-109, 2012
      DOI : http://dx.doi.org/10.3329/jbcs.v25i2.15045
      PubDate: 2013-05-21
      Issue No: Vol. 25, No. 2 (2013)
       
  • Effect Of Sodium Dodecyl Sulfate On Viscometric Properties Of Methanol,
           Ethanol, n-Propanol And iso-Propanol At Different Temperatures

    • Authors: MA Motin, MA Hafiz Mia, AKM Nasimul Islam, KM Salim Reza, MA Yousuf
      Pages: 110 - 123
      Abstract: The critical micelle concentration (CMC) of Sodium Dodecyl Sulfate (SDS) in water was determined from the conductance and viscosity measurement. The estimated value of CMC was found to be 0.0085 mol.L-1 at 29°C. The concentration of SDS in pre-micellar and post-micellar region of 0.005M and 0.01M, respectively were used for the viscometric measurements of Methanol, Ethanol, n-Propanol, iso-Propanol at different temperatures. Viscosities of ternary mixtures of Methanol, Ethanol, n- Propanol and iso-Propanol in 0.005M and 0.01M aqueous SDS have been studied over the entire range of composition at 298.15- 323.15K with an interval of 5K except Methanol. Methanol system was studied at 298.15-308.15K owing to its low boiling point. Viscosities increase rapidly with alcohol concentration and show maxima in aqueous SDS rich region at 0.2 – 0.3 mole fraction of alcohols. The position of maxima virtually does not change remarkably with the variation of temperature. The excess viscosities, ηE values are found to be positive and large in magnitude, indicating that aqueous SDS solutions of alcohols are highly non ideal. The heights of the maxima are in the order:iso-Propanol + aqueous SDS > n-Propanol + aqueous SDS > Ethanol + aqueous SDS > Methanol + aqueous SDS.The excess viscosities, ηE data have been fitted by the least square method to the four parameter Redlich-Kister equation and the values of the parameter aj have been reported. Journal of Bangladesh Chemical Society, Vol. 25(2), 110-123, 2012
      DOI : http://dx.doi.org/10.3329/jbcs.v25i2.15046
      PubDate: 2013-05-21
      Issue No: Vol. 25, No. 2 (2013)
       
  • Synthesis Of 5, 7-Diaryl-1,5-Dihydro (Or 1, 2, 3, 5-Tetrahydro)- Pyrano[2,
           3-D] Pyrimidin-2, 4-Diones (Or 2-Thioxo-4-Ones).

    • Authors: Mohammad Shahid Ullah, M Giasuddin Ahmed, UKR Romman, Kawsari Akhter, S Mosaddeq Ahmed, Md. Ershad Halim
      Pages: 124 - 131
      Abstract: Some 5, 7-diaryl-1,5-dihydro (or 1, 2, 3, 5-tetrahydro)- pyrano[2, 3-d] pyrimidin-2, 4- diones (or 2-thioxo-4-ones) (3a-g) has been synthesized in one-step by the cyclocondensation of barbituric acid or thiobarbituric acid (1) with arylideneacetophenones (2a-d), in glacial acetic acid in the presence of phosphorous pentoxide. The structures of the compounds 3a-g were determined by their UV, IR, 1H NMR, 13C NMR, mass spectral data and elemental analyses. Journal of Bangladesh Chemical Society, Vol. 25(2), 124-131, 2012
      DOI : http://dx.doi.org/10.3329/jbcs.v25i2.15064
      PubDate: 2013-05-23
      Issue No: Vol. 25, No. 2 (2013)
       
  • Preparation Of Carboxymethyl Cellulose/Acrylamide Copoly-Mer Hydrogel
           Using Gamma Radiation And Investigation Of Its Swelling Behavior

    • Authors: S Sultana, MR Islam, NC Dafader, ME Haque
      Pages: 132 - 138
      Abstract: Acrylamide (AAm)/carboxymethyl cellulose (CMC) blend hydrogels have been prepared by the application of gamma radiation from C0-60 source at room temperature (27°C). The preparation conditions such as effect of CMC concentration and radiation dose on gel fraction and swelling behaviors were investigated. The maximum value of gel fraction is obtained at 25 kGy radiation dose. The swelling properties were investigated in distilled water, saline solution (NaCl) and buffer medium. The maximum swelling value of hydrogel was obtained at 48 hours in water. The swelling ratio of hydrogel decreased with increase in concentration of NaCl in swelling medium. In buffer, it was found that swelling ratio increased with increase in pH of medium. Journal of Bangladesh Chemical Society, Vol. 25(2), 132-138, 2012
      DOI : http://dx.doi.org/10.3329/jbcs.v25i2.15065
      PubDate: 2013-05-23
      Issue No: Vol. 25, No. 2 (2013)
       
  • Synthesis And Characterization Of Mixed Ligand Complexes Of Co(Ii) And
           Fe(Iii) Ions With Maleic Acid And Heterocyclic Amines

    • Authors: Md. Belayet Hossain, M Saidul Islam, M Rafiqul Islam, Md. Abdus Salam, M. Abu Yousuf
      Pages: 139 - 145
      Abstract: This paper describes the preparation and characterization of mixed ligand complexes of Co(II) and Fe(III) ions with maleic acid and heterocyclic amines of general formula [M(ME)L] and K[M(ME)L] (where M = Co(II) (1-4), Fe(III) (5-6); ME = C4H2O4 (1-4), 2C4H2O4 (5-6); L = C5H6N2 (1), C9H7N (2-3), C9H6NO (4), C5H5N.H2O (5), C6H7N (6)). The molecular structures of the complexes have been determined by spectral, magnetic studies and elemental analysis. Journal of Bangladesh Chemical Society, Vol. 25(2), 139-145, 2012
      DOI : http://dx.doi.org/10.3329/jbcs.v25i2.15066
      PubDate: 2013-05-23
      Issue No: Vol. 25, No. 2 (2013)
       
  • Solvatochromic And Fluorescence Spectroscopic Studies On Polarity Of Ionic
           Liquid And Ionic Liquid-Based Binary Systems

    • Authors: Kumkum Ahmed, Anika Auni, Gulshan Ara, MM Rahman, M Yousuf Aa Mollah, Md. Abu Bin Hasan Susan
      Pages: 146 - 158
      Abstract: Polarity behavior of a hydrophobic ionic liquid (IL) 1-ethyl-3-methylimidazolium bis(trifluoromethyl)sulphonylimide [EMI][TFSI] and binary mixtures of [EMI][TFSI] with ethanol, acetone and dichloromethane was investigated by solvatochromic method using Reichardt’s betaine dye. Fluorescence spectroscopic method using pyrene as a probe was also used for estimation of polarity of [EMI][TFSI] and [EMI][TFSI]-based binary systems. The binary mixtures of [EMI][TFSI] with the molecular solvents interestingly showed increase in polarity with increasing [EMI][TFSI] for all compositions. The comparative and contrastive features of the results of two methods have been discussed to judge relative merit of one method over the other. Both of the methods collectively provided information to correlate specific interaction of the IL with molecular solvents and define polarity behavior. Journal of Bangladesh Chemical Society, Vol. 25(2), 146-158, 2012
      DOI : http://dx.doi.org/10.3329/jbcs.v25i2.15067
      PubDate: 2013-05-23
      Issue No: Vol. 25, No. 2 (2013)
       
  • Impact Of Heavy Metals On Water And Soil Environment Of A Paint Industry

    • Authors: YN Jolly, A Hossain, A Sattar, A Islam
      Pages: 159 - 165
      Abstract: A study on the heavy metal impact of a paint industry effluent on the surrounding water and soil environment was carried out. This investigation included a variety of sample types essentially related to the impact assessment. The effluent samples collected from Berger Paints Bangladesh Ltd., Savar, were found to contain K, Ca, Mn, Fe, Zn and Sr with the mean concentrations of 9.78, 221, 0.027, 0.031, 0.067 and 0.29 mg L-1, and values of pH, EC, TDS, TSS, BOD and COD measured in those samples were 5.8, 1.28 mS cm-1, 1084 mgL-1, 66 mg L-1 and 101 mg L-1, respectively. The mean concentrations of K, Ca, Mn, Fe, Zn and Sr in groundwater samples and the values of pH, EC, TDS, TSS found in those samples were 1.58, 16.27, 0.25, 0.013, 0.058 and 0.14 mg L-1 and 7.2, 0.17 mS cm-1, 145 mg L-1, and 10 mg L-1, respectively. The effluent receiving pond water showed the presence of K, Ca, Fe, Zn, Br, and Sr with the average concentrations of 3.37, 23, 0.32, 0.37, 0.03 and 0.11 mg L-1, respectively. The respective concentrations of elements-K, Ca, Mn, Fe, Cu, Zn, Br, Rb and Sr detected in aquatic plant (Halenchi shak) growing on effluent receiving pond water were 46400, 4846, 148, 174, 12.7, 62, 37, 124 and 23 mg kg-1. The mean contents of K, Ca, Ti, Mn, Fe, Cu, Zn, Rb and Sr in samples of paint industry-adjacent agricultural land soil were 10128, 8131,5260, 642, 24025, 56, 84, 135 and 138 mg kg-1, respectively. The mean concentrations of elements in pond water (K: 2.49, Ca: 15.2, Fe:0.19, Zn: 0.24, Br: 0.03 and Sr: 0.11 mgL-1), Halenchi shak (K: 42259, Ca: <1837, Mn: <58, Fe: 163, Cu: <14, Zn: 47, Br: 20, Rb: 68 and Sr: 16 mg kg-1) and soil samples (K: <5491, Ca: <3300, Ti: 5034, Mn: 514, Fe: 34660, Cu: 58, Zn: 65, Rb: 135 and Sr: 38 mg kg-1) collected from a pollution free non-industrial zone indicated lower levels for the same parameters than those in corresponding above mentioned effluent-polluted samples. Journal of Bangladesh Chemical Society, Vol. 25(2), 159-165, 2012
      DOI : http://dx.doi.org/10.3329/jbcs.v25i2.15068
      PubDate: 2013-05-23
      Issue No: Vol. 25, No. 2 (2013)
       
  • Influence Of Caffeine On The Redox Characteristics Of Iron In Aqueous
           Solution

    • Authors: Md. Abdul Jabbar, Md. Humayun Kabir, Reaz Ahmed Chowdhury
      Pages: 166 - 179
      Abstract: Electrochemical investigation of the influence of caffeine on the redox behaviour of iron (Fe) was studied by using cyclic voltammetry (CV) and chronocoulometry (CC) in aqueous solution. It was found that caffeine retards the heterogeneous charge transfer of Fe due to the formation of Fe-caffeine complex. Qualitative information for the formation of Fe-caffeine complex was obtained from CV and CC data. Job’s plot suggested that a 1:1 complex of Fe-caffeine was formed in aqueous media. The active center of caffeine for the formation of Fe-caffeine complex was found between O(33) and O(34) position, revealed from MOPAC (Semi-empirical computation, molecular orbital package–PM3) computation. Journal of Bangladesh Chemical Society, Vol. 25(2), 166-179, 2012
      DOI : http://dx.doi.org/10.3329/jbcs.v25i2.15083
      PubDate: 2013-05-27
      Issue No: Vol. 25, No. 2 (2013)
       
  • Method Development And Validation For Estimation Of Commercially Produced
           Sex Pheromones In Lure

    • Authors: Shankar Mandal, AMH Rahman, MIR Mamun, Mohammad Shoeb, Nilufar Nahar
      Pages: 180 - 185
      Abstract: A method was developed and validated for quantitation of methyl eugenol and cuelure, the active ingredients of two formulated sex pheromones (bio-pesticides) Mukti and Jhilik by gas chromatography. Technical grade methyl eugenol and cuelure (purity 95- 96%) were used as standards. Calibration curves of methyl eugenol and cuelure were linear with correlation coefficient (r2) 0.9966 & 0.9988, respectively. Ten replicate analyses were done for both methyl eugenol & cuelure and quantity of the pheromones in the two formulated products were found to be 0.55 ± 0.11 and 0.56 ± 0.09 g/lure (Mean ± SD), respectively. The stability of both pheromones in solution and their diffusion from lures under UV-Vis light was determined for a period of 21 days. The results showed that diffusion of the both pheromones from lure were very fast and about two-third diffused within 10 days after exposure. Methyl eugenol was quite stable in solution, whereas cuelure was found to degrade slowly, and about 15 % cuelure degraded within 21 days. The recovery of methyl eugenol and cuelure from matrix were found to be 80.69 ± 3.14 and 78.48 ± 4.32 % (mean ± SD), respectively, where limit of detection (LOD) & limit of quantification (LOQ) were found to be 97 & 80 ppm, and 290 & 240 ppm, respectively. The developed method is very simple and can be used for estimation of the two sex pheromones. Journal of Bangladesh Chemical Society, Vol. 25(2), 180-185, 2012
      DOI : http://dx.doi.org/10.3329/jbcs.v25i2.15084
      PubDate: 2013-05-27
      Issue No: Vol. 25, No. 2 (2013)
       
  • Synthesis Of 2-Benzoyl-3,4,5,6-Tetrasubstitutedbenzoic Acid From
           Tetrasubstituted Phthalic Anhydride Using Organometalics

    • Authors: Pizush Kanti Biswas, Enamul Huq, MT Rahman, Husna Parvin Nur
      Pages: 186 - 193
      Abstract: The reactions of phenylcoppermagnesium and phenylmagnesium bromide reagents with perchlorophthalic anhydride were investigated. Along with 2-benzoyl-3,4,5,6- tetrachlorobenzoic acid, five other substituted products were isolated and their structure were determined by detailed spectroscopic studies. Journal of Bangladesh Chemical Society, Vol. 25(2), 186-193, 2012
      DOI : http://dx.doi.org/10.3329/jbcs.v25i2.15085
      PubDate: 2013-05-27
      Issue No: Vol. 25, No. 2 (2013)
       
  • Self-Assemble Monolayer Dependent Field Effect Transistor’s Performance
           Based On Tetracene Single-Crystal

    • Authors: Md. Minarul Islam
      Pages: 194 - 199
      Abstract: Organic field effect transistors with an active layer based on the tetracene single-crystal were fabricated. It was found that organosilane self-assemble monolayer (SAM) modified device with tetracene single-crystals gave higher mobility and on/off ratio rather than untreated device. SAM modified tetracene single-crystal transistors with parylene gate insulator showed the highest mobility of 0.66 cm2 V-1 s-1 and high on/off ratio of ~104. This finding demonstrates that SAM treatment decrease the charge leakage between source and drain which help to decrease the off current with greater extent and increase the on current slightly of the tetracene single-crystal field-effect transistors. Journal of Bangladesh Chemical Society, Vol. 25(2), 194-199, 2012
      DOI : http://dx.doi.org/10.3329/jbcs.v25i2.15086
      PubDate: 2013-05-27
      Issue No: Vol. 25, No. 2 (2013)
       
  • Studies Of Dissipation Pattern Of Cypermethrin In Tomato

    • Authors: Nilfur Nahar, Mohammad Shoeb, M Iqbal Rouf Mamun, Sultan Ahmed, Mir Mahadi Hasan, Ahmedul Kabir
      Pages: 200 - 203
      Abstract: Dissipation pattern of cypermethrin (Ripcord 10EC) on tomato plants sprayed at recommended and double the recommended doses followed first order kinetics. In both the doses residues were found below the maximum residue level (0.5 ppm) after one day of application. Recoveries were found to be 80.88% &77.09% spiked at 0.2 & 0.5 ppm, respectively. LOD and LOQ were found to be 0.01 and 0.06 ppm, respectively. Journal of Bangladesh Chemical Society, Vol. 25(2), 200-203, 2012
      DOI : http://dx.doi.org/10.3329/jbcs.v25i2.15087
      PubDate: 2013-05-27
      Issue No: Vol. 25, No. 2 (2013)
       
 
 
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