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  Subjects -> CHEMISTRY (Total: 841 journals)
    - ANALYTICAL CHEMISTRY (50 journals)
    - CHEMISTRY (593 journals)
    - CRYSTALLOGRAPHY (21 journals)
    - ELECTROCHEMISTRY (25 journals)
    - INORGANIC CHEMISTRY (41 journals)
    - ORGANIC CHEMISTRY (44 journals)
    - PHYSICAL CHEMISTRY (67 journals)

CHEMISTRY (593 journals)                  1 2 3 | Last

Showing 1 - 200 of 735 Journals sorted alphabetically
2D Materials     Hybrid Journal   (Followers: 8)
Accreditation and Quality Assurance: Journal for Quality, Comparability and Reliability in Chemical Measurement     Hybrid Journal   (Followers: 26)
ACS Catalysis     Full-text available via subscription   (Followers: 34)
ACS Chemical Neuroscience     Full-text available via subscription   (Followers: 18)
ACS Combinatorial Science     Full-text available via subscription   (Followers: 23)
ACS Macro Letters     Full-text available via subscription   (Followers: 23)
ACS Medicinal Chemistry Letters     Full-text available via subscription   (Followers: 39)
ACS Nano     Full-text available via subscription   (Followers: 234)
ACS Photonics     Full-text available via subscription   (Followers: 11)
ACS Synthetic Biology     Full-text available via subscription   (Followers: 21)
Acta Chemica Iasi     Open Access   (Followers: 2)
Acta Chimica Sinica     Full-text available via subscription   (Followers: 1)
Acta Chimica Slovaca     Open Access   (Followers: 1)
Acta Chromatographica     Full-text available via subscription   (Followers: 9)
Acta Facultatis Medicae Naissensis     Open Access  
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 5)
Acta Scientifica Naturalis     Open Access   (Followers: 2)
adhäsion KLEBEN & DICHTEN     Hybrid Journal   (Followers: 5)
Adhesion Adhesives & Sealants     Hybrid Journal   (Followers: 7)
Adsorption Science & Technology     Full-text available via subscription   (Followers: 5)
Advanced Functional Materials     Hybrid Journal   (Followers: 50)
Advanced Science Focus     Free   (Followers: 3)
Advances in Chemical Engineering and Science     Open Access   (Followers: 55)
Advances in Chemical Science     Open Access   (Followers: 13)
Advances in Chemistry     Open Access   (Followers: 14)
Advances in Colloid and Interface Science     Full-text available via subscription   (Followers: 18)
Advances in Drug Research     Full-text available via subscription   (Followers: 22)
Advances in Enzyme Research     Open Access   (Followers: 9)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 15)
Advances in Heterocyclic Chemistry     Full-text available via subscription   (Followers: 8)
Advances in Materials Physics and Chemistry     Open Access   (Followers: 19)
Advances in Nanoparticles     Open Access   (Followers: 15)
Advances in Organometallic Chemistry     Full-text available via subscription   (Followers: 15)
Advances in Polymer Science     Hybrid Journal   (Followers: 41)
Advances in Protein Chemistry     Full-text available via subscription   (Followers: 18)
Advances in Protein Chemistry and Structural Biology     Full-text available via subscription   (Followers: 19)
Advances in Quantum Chemistry     Full-text available via subscription   (Followers: 5)
Advances in Science and Technology     Full-text available via subscription   (Followers: 12)
African Journal of Bacteriology Research     Open Access  
African Journal of Chemical Education     Open Access   (Followers: 2)
African Journal of Pure and Applied Chemistry     Open Access   (Followers: 7)
Agrokémia és Talajtan     Full-text available via subscription   (Followers: 2)
Alkaloids: Chemical and Biological Perspectives     Full-text available via subscription   (Followers: 3)
AMB Express     Open Access   (Followers: 1)
Ambix     Hybrid Journal   (Followers: 3)
American Journal of Biochemistry and Biotechnology     Open Access   (Followers: 69)
American Journal of Biochemistry and Molecular Biology     Open Access   (Followers: 14)
American Journal of Chemistry     Open Access   (Followers: 26)
American Journal of Plant Physiology     Open Access   (Followers: 14)
American Mineralogist     Hybrid Journal   (Followers: 14)
Analyst     Full-text available via subscription   (Followers: 40)
Angewandte Chemie     Hybrid Journal   (Followers: 200)
Angewandte Chemie International Edition     Hybrid Journal   (Followers: 214)
Annales UMCS, Chemia     Open Access   (Followers: 1)
Annals of Clinical Chemistry and Laboratory Medicine     Open Access   (Followers: 2)
Annual Reports in Computational Chemistry     Full-text available via subscription   (Followers: 3)
Annual Reports Section A (Inorganic Chemistry)     Full-text available via subscription   (Followers: 4)
Annual Reports Section B (Organic Chemistry)     Full-text available via subscription   (Followers: 8)
Annual Review of Chemical and Biomolecular Engineering     Full-text available via subscription   (Followers: 12)
Annual Review of Food Science and Technology     Full-text available via subscription   (Followers: 15)
Anti-Infective Agents     Hybrid Journal   (Followers: 3)
Antiviral Chemistry and Chemotherapy     Hybrid Journal  
Applied Organometallic Chemistry     Hybrid Journal   (Followers: 7)
Applied Spectroscopy     Full-text available via subscription   (Followers: 23)
Applied Surface Science     Hybrid Journal   (Followers: 28)
Arabian Journal of Chemistry     Open Access   (Followers: 6)
ARKIVOC     Open Access   (Followers: 2)
Asian Journal of Biochemistry     Open Access   (Followers: 1)
Atomization and Sprays     Full-text available via subscription   (Followers: 4)
Australian Journal of Chemistry     Hybrid Journal   (Followers: 7)
Autophagy     Hybrid Journal   (Followers: 2)
Avances en Quimica     Open Access   (Followers: 1)
Biochemical Pharmacology     Hybrid Journal   (Followers: 10)
Biochemistry     Full-text available via subscription   (Followers: 293)
Biochemistry Insights     Open Access   (Followers: 6)
Biochemistry Research International     Open Access   (Followers: 6)
BioChip Journal     Hybrid Journal  
Bioinorganic Chemistry and Applications     Open Access   (Followers: 9)
Bioinspired Materials     Open Access   (Followers: 5)
Biointerface Research in Applied Chemistry     Open Access   (Followers: 2)
Biointerphases     Open Access   (Followers: 1)
Biology, Medicine, & Natural Product Chemistry     Open Access   (Followers: 1)
Biomacromolecules     Full-text available via subscription   (Followers: 19)
Biomass Conversion and Biorefinery     Partially Free   (Followers: 10)
Biomedical Chromatography     Hybrid Journal   (Followers: 6)
Biomolecular NMR Assignments     Hybrid Journal   (Followers: 3)
BioNanoScience     Partially Free   (Followers: 4)
Bioorganic & Medicinal Chemistry     Hybrid Journal   (Followers: 123)
Bioorganic & Medicinal Chemistry Letters     Hybrid Journal   (Followers: 98)
Bioorganic Chemistry     Hybrid Journal   (Followers: 10)
Biopolymers     Hybrid Journal   (Followers: 18)
Biosensors     Open Access   (Followers: 2)
Biotechnic and Histochemistry     Hybrid Journal   (Followers: 1)
Bitácora Digital     Open Access  
Boletin de la Sociedad Chilena de Quimica     Open Access  
Bulletin of the Chemical Society of Ethiopia     Open Access   (Followers: 2)
Bulletin of the Chemical Society of Japan     Full-text available via subscription   (Followers: 24)
Bulletin of the Korean Chemical Society     Hybrid Journal   (Followers: 1)
C - Journal of Carbon Research     Open Access   (Followers: 3)
Cakra Kimia (Indonesian E-Journal of Applied Chemistry)     Open Access  
Canadian Association of Radiologists Journal     Full-text available via subscription   (Followers: 3)
Canadian Journal of Chemistry     Hybrid Journal   (Followers: 10)
Canadian Mineralogist     Full-text available via subscription   (Followers: 3)
Carbohydrate Research     Hybrid Journal   (Followers: 26)
Carbon     Hybrid Journal   (Followers: 66)
Catalysis for Sustainable Energy     Open Access   (Followers: 7)
Catalysis Reviews: Science and Engineering     Hybrid Journal   (Followers: 8)
Catalysis Science and Technology     Free   (Followers: 6)
Catalysis Surveys from Asia     Hybrid Journal   (Followers: 3)
Catalysts     Open Access   (Followers: 8)
Cellulose     Hybrid Journal   (Followers: 7)
Cereal Chemistry     Full-text available via subscription   (Followers: 4)
ChemBioEng Reviews     Full-text available via subscription   (Followers: 1)
ChemCatChem     Hybrid Journal   (Followers: 8)
Chemical and Engineering News     Free   (Followers: 13)
Chemical Bulletin of Kazakh National University     Open Access  
Chemical Communications     Full-text available via subscription   (Followers: 71)
Chemical Engineering Research and Design     Hybrid Journal   (Followers: 23)
Chemical Research in Chinese Universities     Hybrid Journal   (Followers: 3)
Chemical Research in Toxicology     Full-text available via subscription   (Followers: 19)
Chemical Reviews     Full-text available via subscription   (Followers: 176)
Chemical Science     Open Access   (Followers: 22)
Chemical Technology     Open Access   (Followers: 16)
Chemical Vapor Deposition     Hybrid Journal   (Followers: 5)
Chemical Week     Full-text available via subscription   (Followers: 8)
Chemie in Unserer Zeit     Hybrid Journal   (Followers: 57)
Chemie-Ingenieur-Technik (Cit)     Hybrid Journal   (Followers: 26)
ChemInform     Hybrid Journal   (Followers: 8)
Chemistry & Biodiversity     Hybrid Journal   (Followers: 6)
Chemistry & Biology     Full-text available via subscription   (Followers: 30)
Chemistry & Industry     Hybrid Journal   (Followers: 5)
Chemistry - A European Journal     Hybrid Journal   (Followers: 143)
Chemistry - An Asian Journal     Hybrid Journal   (Followers: 15)
Chemistry and Materials Research     Open Access   (Followers: 18)
Chemistry Central Journal     Open Access   (Followers: 4)
Chemistry Education Research and Practice     Free   (Followers: 5)
Chemistry in Education     Open Access   (Followers: 9)
Chemistry International     Hybrid Journal   (Followers: 2)
Chemistry Letters     Full-text available via subscription   (Followers: 45)
Chemistry of Materials     Full-text available via subscription   (Followers: 260)
Chemistry of Natural Compounds     Hybrid Journal   (Followers: 9)
Chemistry World     Full-text available via subscription   (Followers: 22)
Chemistry-Didactics-Ecology-Metrology     Open Access   (Followers: 1)
ChemistryOpen     Open Access   (Followers: 2)
Chemkon - Chemie Konkret, Forum Fuer Unterricht Und Didaktik     Hybrid Journal  
Chemoecology     Hybrid Journal   (Followers: 3)
Chemometrics and Intelligent Laboratory Systems     Hybrid Journal   (Followers: 15)
Chemosensors     Open Access  
ChemPhysChem     Hybrid Journal   (Followers: 9)
ChemPlusChem     Hybrid Journal   (Followers: 2)
ChemTexts     Hybrid Journal  
CHIMIA International Journal for Chemistry     Full-text available via subscription   (Followers: 2)
Chinese Journal of Chemistry     Hybrid Journal   (Followers: 6)
Chinese Journal of Polymer Science     Hybrid Journal   (Followers: 10)
Chromatographia     Hybrid Journal   (Followers: 24)
Clay Minerals     Full-text available via subscription   (Followers: 10)
Cogent Chemistry     Open Access  
Colloid and Interface Science Communications     Open Access  
Colloid and Polymer Science     Hybrid Journal   (Followers: 10)
Colloids and Surfaces B: Biointerfaces     Hybrid Journal   (Followers: 7)
Combinatorial Chemistry & High Throughput Screening     Hybrid Journal   (Followers: 4)
Combustion Science and Technology     Hybrid Journal   (Followers: 18)
Comments on Inorganic Chemistry: A Journal of Critical Discussion of the Current Literature     Hybrid Journal   (Followers: 2)
Composite Interfaces     Hybrid Journal   (Followers: 6)
Comprehensive Chemical Kinetics     Full-text available via subscription   (Followers: 2)
Comptes Rendus Chimie     Full-text available via subscription  
Comptes Rendus Physique     Full-text available via subscription   (Followers: 1)
Computational and Theoretical Chemistry     Hybrid Journal   (Followers: 9)
Computational Biology and Chemistry     Hybrid Journal   (Followers: 12)
Computational Chemistry     Open Access   (Followers: 2)
Computers & Chemical Engineering     Hybrid Journal   (Followers: 9)
Coordination Chemistry Reviews     Full-text available via subscription   (Followers: 2)
Copernican Letters     Open Access   (Followers: 1)
Critical Reviews in Biochemistry and Molecular Biology     Hybrid Journal   (Followers: 5)
Crystal Structure Theory and Applications     Open Access   (Followers: 3)
CrystEngComm     Full-text available via subscription   (Followers: 12)
Current Catalysis     Hybrid Journal   (Followers: 2)
Current Metabolomics     Hybrid Journal   (Followers: 5)
Current Opinion in Colloid & Interface Science     Hybrid Journal   (Followers: 9)
Current Research in Chemistry     Open Access   (Followers: 8)
Current Science     Open Access   (Followers: 58)
Dalton Transactions     Full-text available via subscription   (Followers: 22)
Detection     Open Access   (Followers: 2)
Developments in Geochemistry     Full-text available via subscription   (Followers: 2)
Diamond and Related Materials     Hybrid Journal   (Followers: 12)
Dislocations in Solids     Full-text available via subscription  
Doklady Chemistry     Hybrid Journal  
Drying Technology: An International Journal     Hybrid Journal   (Followers: 4)
Eclética Química     Open Access   (Followers: 1)
Ecological Chemistry and Engineering S     Open Access   (Followers: 4)
Ecotoxicology and Environmental Contamination     Open Access  
Educación Química     Open Access   (Followers: 1)
Education for Chemical Engineers     Hybrid Journal   (Followers: 5)
EJNMMI Radiopharmacy and Chemistry     Open Access  
Elements     Full-text available via subscription   (Followers: 2)
Environmental Chemistry     Hybrid Journal   (Followers: 9)
Environmental Chemistry Letters     Hybrid Journal   (Followers: 4)
Environmental Science & Technology Letters     Full-text available via subscription   (Followers: 5)
Environmental Science : Nano     Partially Free   (Followers: 1)
Environmental Toxicology & Chemistry     Hybrid Journal   (Followers: 18)

        1 2 3 | Last

Journal Cover Bulletin of the Korean Chemical Society
  [SJR: 0.297]   [H-I: 44]   [1 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Online) 1229-5949
   Published by John Wiley and Sons Homepage  [1577 journals]
  • Formulation and Analgesic Effect of Sodium Hyaluronate and Magnesium
           Sulfate Combination in Rats Following Intra-articular Injection
    • Authors: Myoung Jin Ho; Dae Ro Lee, Hyuck Jun Jung, Woo Heon Song, Jun Sang Park, Myung Joo Kang
      Abstract: The objective of this study was to formulate hyaluronate (HA) combined with magnesium sulfate (MS) for intra-articular (IA) injection, to provide rapid and profound analgesia in the treatment of osteoarthritis (OA). The injectable HA/MS combination was optimized with respect to the kinds and amounts of buffering agent (10 mM histidine, pH 7.0) and stabilizer (10 mM sodium citrate), by evaluating changes in the appearance, pH, and intrinsic viscosity at 60°C. Increasing concentrations of sodium citrate significantly inhibited the decline in intrinsic viscosity, denoting the depolymerization of HA, preserving over 91% of initial value. In an efficacy study in iodoacetate-induced OA rats, treatment with the HA/MS combination (1/2% w/v) significantly reduced joint swelling and pain, compared to the vehicle- and HA-treated groups (p 
      PubDate: 2017-04-24T20:32:30.52332-05:0
      DOI: 10.1002/bkcs.11128
       
  • Optimization of Benzimidazole Scaffold with a trans-Phenylcyclohexyl
           Acetic Acid as Diacylglycerol Acyltransferase-1 Inhibitors
    • Authors: Yu Mi Pyun; Joon Hyun Oh, Hyun Jung Kwak, Ji Young Kim, Seo-Jung Han, Gwi Bin Lee, Suvarna H. Pagire, Haushabhau S. Pagire, Ki Young Kim, Won Hoon Jung, Sang Dal Rhee, Duck Hyung Lee, Jin Hee Ahn
      PubDate: 2017-04-24T20:25:31.934228-05:
      DOI: 10.1002/bkcs.11121
       
  • Synthesis of Ring-fused Tetrahydroquinoline Derivatives via [1,5]-Hydride
           Transfer/Cyclization Sequences
    • Authors: Yeon Joo Kim; Yubin Kim, Dae Young Kim
      PubDate: 2017-04-24T20:25:27.813373-05:
      DOI: 10.1002/bkcs.11126
       
  • Synthesis of Functionalized 4H-3,1-Benzoxazines through Chemoselective
           Reduction of Benzoxazin-4-Ones
    • Authors: Koteswara R. Kamma; Sun-Ah Lee, In-Taek Hwang, Yohan Han, Kee-In Lee
      PubDate: 2017-04-20T03:10:47.79455-05:0
      DOI: 10.1002/bkcs.11122
       
  • Site-specific Protein Modification by Radical-mediated CC Bond Formation
    • Authors: Jieun Choi; Hyun-Joon Ha
      PubDate: 2017-04-19T03:42:05.98801-05:0
      DOI: 10.1002/bkcs.11124
       
  • One-Pot Synthesis of 3-(Benzo[e]indol-2-yl)-2-oxindoles from
           Isatin-derived Propargylic Alcohols and N-Acetyl-2-aminonaphthalenes
    • Authors: Hwa Jung Roh; Da Young Seo, Ji Yeon Ryu, Junseong Lee, Jae Nyoung Kim
      PubDate: 2017-04-19T03:42:03.78709-05:0
      DOI: 10.1002/bkcs.11127
       
  • Advances in Multifunctional Surface Coating Using Metal-Phenolic Networks
    • Authors: Sanghoon Kim; Andreea Pasc
      PubDate: 2017-04-07T06:12:16.074647-05:
      DOI: 10.1002/bkcs.11123
       
  • Regioselective Synthesis of the FXR Antagonist E-Guggulsterone from Three
           Natural Steroids
    • Authors: Jungwook Chin; Dongyup Hahn, Dong Hwan Won, Sung Jin Cho, Kyung-Hee Kim, Jungyeob Ham, Heonjoong Kang
      Abstract: In our attempt to develop a method to synthesize E- and Z-guggulsterones [antagonists of farnesoid X receptor (FXR)], we have succeeded in synthesizing E-guggulsterone selectively from three steroids, viz, 4-androsten-3, 17-dione (2), 5-androsten-3β-ol-17-one (DHEA) (3), and testosterone (4), in 68, 86 and 62% overall yield, respectively. We also investigated the biological effects of the synthetic E- and Z-guggulsterones and found that E-guggulsterone was more potent than Z-guggulsterone in inhibiting FXR transactivation
      PubDate: 2017-04-07T06:12:09.358374-05:
      DOI: 10.1002/bkcs.11120
       
  • New 1,7-Disubstituted Perylenediimides as Molecular Acceptors for Organic
           Solar Cells
    • Authors: Hea Jung Park; Mi-Jeong Kim, Jong Baek Park, In-Nam Kang, Ung Chan Yoon, Do-Hoon Hwang
      Abstract: Two perylenediimides (PDIs), PT and PT2, functionalized with thiophene heterocycles on the 1,7-positions of the bay region were synthesized and utilized in inverted bulk-heterojunction (BHJ) polymer solar cells as acceptors in the photoactive layer. The synthesized PDIs were thermally stable up to 453°C and soluble in chlorinated solvents such as dichloromethane and chloroform. PT or PT2 was blended with poly[4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b′]bithiophene-co-3-fluorothieno[3,4-b]thiophene-2-carboxylate] (PCE-10) as a donor material. The inverted BHJ solar cell fabricated using the PCE-10:PT photoactive layer showed the highest power conversion efficiency (PCE) of 2.06%. Film morphology studies of PCE-10:PDI blends revealed a relationship between the film nanostructure and device performance.
      PubDate: 2017-03-30T04:31:15.772358-05:
      DOI: 10.1002/bkcs.11118
       
  • Photoluminescence Characteristics of Green-emitting ZnGa2S4:Eu and EuGa2S4
           Phosphors
    • Authors: Young-Sik Cho; Young-Duk Huh
      Abstract: Zn(1−x)Ga2S4:xEu (x = 0.03, 0.06, 0.09, 0.12, 0.15, 0.25, 0.50, 0.75, 1.0) phosphors were synthesized by performing a solid-state reaction. ZnGa2S4:Eu and EuGa2S4 crystal structures were confirmed by the XRD data. The photoluminescence (PL) spectra of the Zn(1−x)Ga2S4:xEu phosphors were examined. Zn(1−x)Ga2S4:xEu phosphor had a strong absorption near 465 nm, which was equal to the emission wavelength of the commercial blue-emitting diode. Zn(1−x)Ga2S4:xEu phosphor produced a single emission band between 520 and 580 nm. The feasibility of Zn(1−x)Ga2S4:xEu as a green-emitting phosphor pumped by the blue-emitting diode was investigated. A three-band white emission was obtained by coating a mixture of Zn(1−x)Ga2S4:xEu and CaS:Eu phosphors onto the surface of a blue-emitting diode.
      PubDate: 2017-03-27T05:08:15.944269-05:
      DOI: 10.1002/bkcs.11119
       
  • Reaction at the Electrolyte–Electrode Interface in a Li-Ion Battery
           Studied by In Situ Raman Spectroscopy
    • Authors: Yeonju Park; Yeseul Kim, Soo Min Kim, Sila Jin, In Kee Han, Sung Man Lee, Young Mee Jung
      Abstract: Monitoring the reaction on the electrolyte–electrode interface using in situ Raman spectroscopy during the second charging process: the mechanism of the surface reaction during the second charging process by two-dimensional Raman correlation spectroscopy is discussed in the manuscript.
      PubDate: 2017-03-27T05:02:16.905336-05:
      DOI: 10.1002/bkcs.11117
       
  • Synthesis and Characterization of Pt-loaded Carbon Nanostructures Derived
           from Polyaniline Nanotubes
    • Authors: Gong-Da Xu; Pil Kim, Youn-Sik Lee
      PubDate: 2017-03-22T02:47:12.691378-05:
      DOI: 10.1002/bkcs.11108
       
  • High-Resolution NMR Spectroscopy for the Classification of Beer
    • Authors: Ji-Ho Jeong; Sung-Jin Cho, Yongae Kim
      Abstract: High-resolution Nuclear Magnetic Resonance (NMR) spectroscopy has many applications in the analysis of food and beverage products, especially in combination with multivariate analysis. Most studies have focused on the composition, raw materials, geographical origin, and quality control of these products. Since the 1H NMR spectrum of beer contains huge water and ethanol resonances with higher signal intensities of them than those of the compounds of interest, it becomes problematic to assign a spectrum. So, these obstacles must be overcome in order to define chemical components in beer and to analyze or obtain meaningful data. In this paper, we will analyze the 1H NMR spectra of different lagers and ales with principal component analysis (PCA) and partial least squares (PLS) methods. The results of multivariate analysis of 1H NMR spectra of lyophilized and raw samples obtained using a standard solvent suppression pulse program are compared and discussed for more exact technique as an informative quality control tool.
      PubDate: 2017-03-22T02:47:07.133226-05:
      DOI: 10.1002/bkcs.11113
       
  • GC-MS Analysis of Various Phytoestrogens in Health Functional Foods
    • Authors: Yu Ra Kim; Hee Soo Pyo, Bong Chul Chung, Myeong Hee Moon, Jeongae Lee
      Abstract: This study aimed to measure phytoestrogen contents in health functional foods (HFFs) to alleviate menopausal symptoms that are commercially available in South Korea. A sensitive and selective method using gas chromatography–mass spectrometry (GC-MS) for the monitoring of 21 phytoestrogens was developed and fully validated. Phytoestrogens were extracted by liquid–liquid extraction using methyl tert-butylether as the solvent. Food samples were enzymatically hydrolyzed with β-glucuronidase/arylsulfatase. Before GC-MS, the analytes were derivatized to their trimethylsilyl derivatives by incubation with N,O-bis(trimethylsilyl)trifluoroacetamide with 1% trimethylchlorosilane for 30 min at 80°C. The calibration curves showed good linearity (r2 > 0.99) in the range of interest for each analyte. The limits of detection and quantification of the 21 phytoestrogens were in the ranges of 0.5–20 and 1–50 ng/mL, respectively. The intra- and inter-day precisions were all below 15.7%. These multivariate procedures were efficient in determining the optimal conditions using peak heights as responses.
      PubDate: 2017-03-22T02:47:03.017657-05:
      DOI: 10.1002/bkcs.11111
       
  • Toxicological Assessment of Microcystin-LR to Zebrafish (Danio rerio)
           Using Metabolomics
    • Authors: Dahye Yoon; Hyeonsoo Choi, Hyeonkyung Noh, Young Jun Ok, Sangah Oh, Seohee Ma, Changshin Yoon, Suhkmann Kim
      Abstract: Microcystins are one of the most frequently found hepatotoxic cyclic peptides in fresh- and brackish-water. Zebrafish (Danio rerio) were exposed to 20 ppb of microcystin-LR (MCLR) for 72 h in order to investigate the metabolic responses. Proton nuclear magnetic resonance (1H-NMR) spectroscopy was used to analyze the metabolic profiles. As a result, male and female zebrafish showed different patterns of metabolic perturbation in relation to their detoxification profiles. Glutathione was reduced for the MCLR excretion, and fumarate and creatine were increased for the energy demands required for detoxification in the male zebrafish. The correlation of metabolites in the metabolic pathway network was changed due to MCLR exposure. The correlations connected with myo-inositol, betaine, and NADPH considerably altered in the MCLR-exposed group.
      PubDate: 2017-03-07T21:36:05.437036-05:
      DOI: 10.1002/bkcs.11112
       
  • Post-Synthetic Modification of Mesoporous Zinc-Adeninate Framework with
           Tris(2,2′-bipyridine) Ruthenium(II) Complex and its
           Electrochemiluminescence
    • Authors: Ji-Eun Park; Hyojae Oh, Jihyun An, Ik-Soo Shin
      Abstract: Herein we report a redox-active metal-organic framework (MOF) via post-synthetic cation exchange with tris(2,2′-biprydine) ruthenium(II) complex (Ru(bpy)32+). A porous anionic zinc-adeninate framework (bMOF-100) is spacious enough to easily entrap 2.43 of Ru(bpy)32+ cations within the mesopore. The encapsulation supported the framework structure preventing any distortion from a rapid solvent evaporation under SEM observation. Ru(bpy)32+@bMOF-100 was then immobilized on the surface of glassy carbon electrode, and its electrocatalytic and electrochemiluminescent (ECL) properties were investigated in aqueous and organic solution. Especially, Ru(bpy)32+@bMOF-100 showed the excellent electrochemical properties of Ru(bpy)32+, but gradual decomposition of the MOF structure was observed under electrochemical measurements because of the sluggish oxidation of adeninate ligand.
      PubDate: 2017-03-07T21:36:00.679785-05:
      DOI: 10.1002/bkcs.11115
       
  • Effects of Grain Boundaries at the Electrolyte/Cathode Interfaces on
           Oxygen Reduction Reaction Kinetics of Solid Oxide Fuel Cells
    • Authors: Mingi Choi; Ja Yang Koo, Minwoo Ahn, Wonyoung Lee
      Abstract: We systematically investigated the effects of grain boundaries (GBs) at the electrolyte/cathode interface of two conventional electrolyte materials, i.e., yttria-stabilized zirconia (YSZ) and gadolinia-doped ceria (GDC). We deposited additional layers by pulsed laser deposition to control the GB density on top of the polycrystalline substrates, obtaining significant improvements in peak power density (two-fold for YSZ and three-fold for GDC). The enhanced performance at high GB density in the additional layer could be ascribed to the accumulation of oxygen vacancies, which are known to be more active sites for oxygen reduction reactions (ORR) than grain cores. GDC exhibited a higher enhancement than YSZ, due to the easier formation, and thus higher concentration, of oxygen vacancies for ORR. The strong relation between the concentration of oxygen vacancies and the surface exchange characteristics substantiated the role of GBs at electrolyte/cathode interfaces on ORR kinetics, providing new design parameters for highly performing solid oxide fuel cells.
      PubDate: 2017-03-07T21:35:48.236087-05:
      DOI: 10.1002/bkcs.11102
       
  • Enhancement of the Dispersion of Asphaltenes in Heavy Crude Oil by the
           Addition of Poly(Butylene Succinic Anhydride)-based Dispersants
    • Authors: Jeong-Mae Son; Jihoon Shin, Youngdo Yang, Joon-Seop Kim, Young-Wun Kim
      Abstract: In this work, two sets of dispersants based on poly(butylene succinic anhydride) reacted with various alkylamines and poly(ethyleneamine)s were prepared to enhance the dispersion properties of asphaltenes in heavy crude oil. It was found that the dispersants containing poly(ethyleneamine) moieties showed better dispersion properties than those containing alkylamine moieties. In addition, it was also observed that the dispersion of the asphaltenes was improved by the increase in the length of the ethyleneamine chain. Thus, it was proposed that the functional groups of the dispersant interacted with those of the asphaltenes to form complexes, by which the asphaltene aggregation would be interrupted. Furthermore, the dispersants containing comparable amounts of amide and imide forms exhibited better dispersion, but the dispersants containing salt form showed less effective dispersion. This might be possibly due to the ionic interactions between the salt form dispersants.
      PubDate: 2017-03-07T21:35:41.08568-05:0
      DOI: 10.1002/bkcs.11103
       
  • One-Pot Synthesis of Cu2O Octahedron Particles and Their Catalytic
           Application
    • Authors: Biao Li; Dan Li, Lei Mu, Sung Ik Yang
      Abstract: We report a facile one-step synthesis method of cuprous oxide (Cu2O) hollow octahedrons with controllable size Cu2O exhibited a great catalytic activity for the reduction of methylene blue by N2H4 as well as NABH4.
      PubDate: 2017-03-07T21:35:27.814254-05:
      DOI: 10.1002/bkcs.11105
       
  • Production of Alginate Sub-micron Particles and Their Biological
           Application
    • Authors: Yo Han Choi; Chang Beom Kim, Hyo Bong Hong, Woon Seob Lee
      PubDate: 2017-03-07T20:20:32.559926-05:
      DOI: 10.1002/bkcs.11110
       
  • Thiourea-catalyzed 1,5-Hydride Transfer and Cyclization Sequences:
           Synthesis of Tetrahydroquinoline Derivatives
    • Authors: Hye Im Jeong; Tae Ho Youn, Dae Young Kim
      PubDate: 2017-03-07T20:20:27.06262-05:0
      DOI: 10.1002/bkcs.11114
       
  • Quantum Effects in Plasmon Coupling Across Subnanometer Gaps
    • Authors: Sungwoon Lee; Sangwoon Yoon
      PubDate: 2017-03-07T20:15:31.162264-05:
      DOI: 10.1002/bkcs.11109
       
  • Electrochemically Active Thickness of Solid Oxide Fuel Cell Electrodes:
           Effectiveness Model Prediction
    • Authors: Jin Hyun Nam
      Abstract: The three-phase boundaries (TPBs) in the electrodes of solid oxide fuel cells (SOFCs) have different activity because of the distributed nature of the electrochemical reactions. The electrochemically active thickness (EAT) is a good measure to evaluate the extension of the active reaction zone into the electrode and the effective utilization of TPBs. In this study, an electrochemical reaction/charge conduction problem is formulated based on the Butler–Volmer reaction kinetics and then numerically solved to determine the EATs for the active electrode layers of SOFCs with various microstructural, dimensional, and property parameters. Thus, the EAT data and correlations presented in this study are expected to provide useful information for designing efficient electrodes of SOFCs.
      PubDate: 2017-03-06T03:11:13.040707-05:
      DOI: 10.1002/bkcs.11116
       
  • High-Density Carbon Nanotube Wet-laid Buckypapers with Enhanced Strength
           and Conductivity Using a High-pressure Homogenization Process
    • Authors: Jun Choi; Si-hoon Jang, Jun Young Oh, Seung Jae Yang, No-hyung Park, Wonyoung Jeong, Dae Young Lim
      Abstract: In this work, we prepared homogeneously dispersed carbon nanotubes in water using a high-pressure homogenizer, while high-density carbon nanotube buckypapers were prepared by wet-laid process. The strength and conductivity of the buckypaper were increased dramatically after the high-pressure homogenization because of the increased density and uniformity of the paper. In addition, the buckypapers containing various additives and treated with SOCl2 exhibited further increase of strength and conductivity resulting from the binding and the p-type doping effect. The buckypapers with high electrical conductivity exhibited superior electromagnetic interference shielding effectiveness that could be applied for structural shielding materials.
      PubDate: 2017-02-28T03:05:45.542321-05:
      DOI: 10.1002/bkcs.11104
       
  • Structural Characterization of RNA Recognition Motif-2 Domain of SART3
    • Authors: Kyeong-Mi Bang; Na Youn Cho, Won-Je Kim, Ae-Ryung Kim, Hyun Kyu Song, Eunice EunKyeong Kim, Nak-Kyoon Kim
      Abstract: Squamous cell carcinoma antigen recognized by T-cells 3 (SART3) is an essential recycling factor in pre-mRNA splicing, which is required for association of U4/U6 small nuclear ribonucleoprotein (snRNP). SART3 contains two RNA recognition motifs (RRMs), and they are responsible for the tertiary interaction with U6 small nuclear RNA. Despite the importance of structural studies for understanding complicate U4/U6 snRNP recycling mechanism, only a few of them have been performed for SART3. Here, the structure of SART3 RRM2 was characterized by heteronuclear multi-dimensional nuclear magnetic resonance experiments. Nearly complete 1H, 15N, and 13C chemical shifts of the backbone residues of RRM2 were assigned. In addition, the secondary structure of RRM2 were predicted by the chemical shift index and TALOS+ analyses, and the results showed that RRM2 forms a “β1-α1-β2-β3-α2-β4-β5” structure, where β4 is not common in the canonical RRM domain structures. Our results will provide structural basis for investigation of SART3-mediated U4/U6 snRNP complex formation.
      PubDate: 2017-02-28T03:05:28.945658-05:
      DOI: 10.1002/bkcs.11106
       
  • Retraction: ‘Influencing Factors on Wet Grip and Rolling Resistance
           Properties of Styrene-Butadiene Rubber Composites’ by Choi, S.-S., Kwon,
           H.-M., Kim, Y., Ko, E. and Lee, K.-S.
    • Abstract: The above article in Bulletin of the Korean Chemical Society, published online on February 23, 2017, in Wiley Online Library (onlinelibrary.wiley.com,
      DOI : 10.1002/bkcs.11086), has been retracted by agreement between the authors, the journal Editor, B. Moon Kim, the Korean Chemical Society and Wiley-VCH Verlag GmbH & Co. KGaA. The retraction has been agreed as the sample codes of the experiments in the tables and figures were mixed up, thus invalidating the conclusions.
      PubDate: 2017-02-23T19:30:38.894309-05:
       
  • Cover BKCS 4/2017
    • Pages: 415 - 415
      PubDate: 2017-04-11T00:28:31.937904-05:
      DOI: 10.1002/bkcs.10940
       
  • Masthead BKCS 4/2017
    • Pages: 417 - 418
      PubDate: 2017-04-11T00:28:32.821451-05:
      DOI: 10.1002/bkcs.10941
       
 
 
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