The Experts below are selected from a list of 312 Experts worldwide ranked by ideXlab platform
Pengyi Yang - One of the best experts on this subject based on the ideXlab platform.
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selective photodegradation of 1 Methylimidazole 2 thiol by the magnetic and dual conductive imprinted photocatalysts based on tio2 fe3o4 mwcnts
Chemical Engineering Journal, 2014Co-Authors: Yingying Luo, Yinhua Jiang, Dandan Wang, Lili Yang, Pengwei Huo, Xuliang Bai, Xulan Xie, Pengyi YangAbstract:Abstract The magnetic and dual conductive imprinted photocatalysts (MCIPs) were synthesized through the suspension polymerization method. TiO 2 /Fe 3 O 4 /MWCNTs, 1-Methylimidazole-2-thiol and pyrrole were used as supports, template molecule and functional monomer, respectively. The MCIPs were further characterized by X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), scanning electron microscopy (SEM), transmission electron microscope (TEM), UV–visible diffuse reflectance spectra (UV–vis DRS), thermogravimetric analysis (TGA) and vibrating sample magnetometer (VSM). The result revealed that polypyrrole (PPy) was formed and well embedded in the surface imprinted layer of TiO 2 /Fe 3 O 4 /MWCNTs. Owing to PPy and MWCNTs, the MCIPs was equipped with dual conductivity which was particularly useful for photodegradation of 1-Methylimidazole-2-thiol in aqueous solution under ultraviolet irradiation. Through a series investigation of factors, it was obvious that when the polymerization time was 24 h and the adding dose of pyrrole was 8 mmol, the resulting MCIPs obtained the highest photocatalytic ability. In addition, the photodegradation process obeyed the pseudo-first-order kinetic reaction and exhibited an excellent selective degradation ability of 1-Methylimidazole-2-thiol. The degradation intermediate products and mechanism of 1-Methylimidazole-2-thiol were further discussed.
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Selective photodegradation of 1-Methylimidazole-2-thiol by the magnetic and dual conductive imprinted photocatalysts based on TiO2/Fe3O4/MWCNTs
Chemical Engineering Journal, 2014Co-Authors: Yingying Luo, Yinhua Jiang, Dandan Wang, Lili Yang, Pengwei Huo, Xuliang Bai, Xulan Xie, Pengyi YangAbstract:Abstract The magnetic and dual conductive imprinted photocatalysts (MCIPs) were synthesized through the suspension polymerization method. TiO 2 /Fe 3 O 4 /MWCNTs, 1-Methylimidazole-2-thiol and pyrrole were used as supports, template molecule and functional monomer, respectively. The MCIPs were further characterized by X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), scanning electron microscopy (SEM), transmission electron microscope (TEM), UV–visible diffuse reflectance spectra (UV–vis DRS), thermogravimetric analysis (TGA) and vibrating sample magnetometer (VSM). The result revealed that polypyrrole (PPy) was formed and well embedded in the surface imprinted layer of TiO 2 /Fe 3 O 4 /MWCNTs. Owing to PPy and MWCNTs, the MCIPs was equipped with dual conductivity which was particularly useful for photodegradation of 1-Methylimidazole-2-thiol in aqueous solution under ultraviolet irradiation. Through a series investigation of factors, it was obvious that when the polymerization time was 24 h and the adding dose of pyrrole was 8 mmol, the resulting MCIPs obtained the highest photocatalytic ability. In addition, the photodegradation process obeyed the pseudo-first-order kinetic reaction and exhibited an excellent selective degradation ability of 1-Methylimidazole-2-thiol. The degradation intermediate products and mechanism of 1-Methylimidazole-2-thiol were further discussed.
Shigekazu Yamazaki - One of the best experts on this subject based on the ideXlab platform.
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An Effective Procedure for the Synthesis of Acid-Sensitive Epoxides: Use of 1-Methylimidazole as the Additive on Methyltrioxorhenium-Catalyzed Epoxidation of Alkenes with Hydrogen Peroxide.
ChemInform, 2010Co-Authors: Shigekazu YamazakiAbstract:A catalytic system combining MeReO3 and 3-methylpyrazole with 1-Methylimidazole is successfully applied to the epoxidation of various alkenes with hydrogen peroxide.
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An effective procedure for the synthesis of acid-sensitive epoxides: Use of 1-Methylimidazole as the additive on methyltrioxorhenium-catalyzed epoxidation of alkenes with hydrogen peroxide
Organic & biomolecular chemistry, 2010Co-Authors: Shigekazu YamazakiAbstract:An effective method for suppression of ring opening and rearrangement of acid-sensitive epoxides during methyltrioxorhenium(MTO)-catalyzed epoxidation of alkenes with H2O2 by using 1-Methylimidazole as a co-additive has been found. The combined use of 3-methylpyrazole and 1-Methylimidazole as the additives has been found to be an effective procedure that affords excellent yields of acid-sensitive epoxides for MTO-catalyzed epoxidation.
Wenxia Tang - One of the best experts on this subject based on the ideXlab platform.
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Binding of 1-Methylimidazole to cytochrome c: kinetic analysis and resonance assignments by two-dimensional NMR
Biochimica et biophysica acta, 1995Co-Authors: Weiping Shao, Gaohua Liu, Wenxia TangAbstract:The binding of 1-Methylimidazole to the heme iron by displacing Met-80 of cytochrome c has been studied by two-dimensional (2D) exchange spectroscopy. Two components of cytochrome c ligated by 1-Methylimidazole (1-MeIm-cyt c) are first identified, which are related to the sterically hindered orientation of 1-Methylimidazole by the heme pocket. Based on a matrix formalism, the kinetic parameters are calculated from the 2D peak amplitudes. With the known resonance assignments of cytochrome c, some hyperfine shifted resonances arising from heme peripheral protons and two axial ligands, and some side-chain resonances of the aliphatic and aromatic protons of 1-MeIm-cyt c have been straightforwardly assigned, which provide a clue to ligand-induced electronic and molecular structural changes of the protein.
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1H NMR studies of 1-Methylimidazole complex of cytochrome c
Journal of Inorganic Biochemistry, 1995Co-Authors: Weiping Shao, Gaohua Liu, Wenxia TangAbstract:Abstract Some hyperfine shifted 1 H resonances of 1-Methylimidazole complex of horse ferricytochrome c (1-MeIm·cyt c ) have been assigned for the first time using 1D saturation transfer and 2D EXSY exchange correlated spectroscopy) experiments. Kinetic and equilibrium data for 1-MeIm binding to cyt c at a temperature range of 303–319 K have been determined at pH 7.0 by using the NMR method. The observed thermodynamic parameters for 1-MeIm binding are Δ H° = 39.5 kJ·mol −1 , Δ S° = 154 J·mol −1 ·K −1 , and Ea = 142 kJ·mol −1 . The source of the asymmetric spin density distribution in heme groups of 1-MeIm·cyt c and the reason of low affinity of cytochrome c for 1-MeIm are also discussed.
Ai-ping Jin - One of the best experts on this subject based on the ideXlab platform.
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PdCl2(1-Methylimidazole)2-Catalyzed Suzuki—Miyaura and Mizoroki—Heck Reactions Performed in Neat Water.
ChemInform, 2013Co-Authors: Xiao-fang Lin, Meng-yuan Liu, Lu-lu Zhang, Ai-ping JinAbstract:A high yielding Suzuki—Miyaura and Mizoroki—Heck coupling reaction with water as solvent and PdCl2(1-Methylimidazole)2 complex as catalyst is shown.
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pdcl2 1 Methylimidazole 2 catalysed suzuki miyaura and mizoroki heck reactions performed in neat water
Journal of Chemical Research-s, 2013Co-Authors: Xiao-fang Lin, Meng-yuan Liu, Lu-lu Zhang, Ai-ping JinAbstract:PdCl2(1-Methylimidazole)2 was an effective catalyst in neat water for the Suzuki–Miyaura and Mizoroki–Heck reactions of aryl bromides and iodides with, respectively, arylboronic acids and acrylic acid. Under optimal conditions, the products, variously substituted biphenyls and monosubstituted trans-cinnamic acids, respectively, were formed in good to almost quantitative yields.
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PdCl2(1-Methylimidazole)2-catalysed Suzuki–Miyaura and Mizoroki–Heck Reactions Performed in Neat Water:
Journal of Chemical Research, 2013Co-Authors: Xiao-fang Lin, Meng-yuan Liu, Lu-lu Zhang, Ai-ping JinAbstract:PdCl2(1-Methylimidazole)2 was an effective catalyst in neat water for the Suzuki–Miyaura and Mizoroki–Heck reactions of aryl bromides and iodides with, respectively, arylboronic acids and acrylic acid. Under optimal conditions, the products, variously substituted biphenyls and monosubstituted trans-cinnamic acids, respectively, were formed in good to almost quantitative yields.
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N-Heterocyclic carbene-palladium(II)-1-Methylimidazole complex catalyzed Mizoroki-Heck reaction of aryl chlorides with styrenes.
Beilstein journal of organic chemistry, 2012Co-Authors: Ting-ting Gao, Ai-ping Jin, Li-xiong ShaoAbstract:A well-defined N-heterocyclic carbene–palladium(II)-1-Methylimidazole [NHC-Pd(II)-Im] complex 1 was found to be an effective catalyst for the Mizoroki–Heck reaction of a variety of aryl chlorides with styrenes. Both activated and deactivated aryl chlorides work well to give the corresponding coupling products in good to excellent yields by using tetrabutylammonium bromide (TBAB) as the ionic liquid.
Yingying Luo - One of the best experts on this subject based on the ideXlab platform.
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selective photodegradation of 1 Methylimidazole 2 thiol by the magnetic and dual conductive imprinted photocatalysts based on tio2 fe3o4 mwcnts
Chemical Engineering Journal, 2014Co-Authors: Yingying Luo, Yinhua Jiang, Dandan Wang, Lili Yang, Pengwei Huo, Xuliang Bai, Xulan Xie, Pengyi YangAbstract:Abstract The magnetic and dual conductive imprinted photocatalysts (MCIPs) were synthesized through the suspension polymerization method. TiO 2 /Fe 3 O 4 /MWCNTs, 1-Methylimidazole-2-thiol and pyrrole were used as supports, template molecule and functional monomer, respectively. The MCIPs were further characterized by X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), scanning electron microscopy (SEM), transmission electron microscope (TEM), UV–visible diffuse reflectance spectra (UV–vis DRS), thermogravimetric analysis (TGA) and vibrating sample magnetometer (VSM). The result revealed that polypyrrole (PPy) was formed and well embedded in the surface imprinted layer of TiO 2 /Fe 3 O 4 /MWCNTs. Owing to PPy and MWCNTs, the MCIPs was equipped with dual conductivity which was particularly useful for photodegradation of 1-Methylimidazole-2-thiol in aqueous solution under ultraviolet irradiation. Through a series investigation of factors, it was obvious that when the polymerization time was 24 h and the adding dose of pyrrole was 8 mmol, the resulting MCIPs obtained the highest photocatalytic ability. In addition, the photodegradation process obeyed the pseudo-first-order kinetic reaction and exhibited an excellent selective degradation ability of 1-Methylimidazole-2-thiol. The degradation intermediate products and mechanism of 1-Methylimidazole-2-thiol were further discussed.
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Selective photodegradation of 1-Methylimidazole-2-thiol by the magnetic and dual conductive imprinted photocatalysts based on TiO2/Fe3O4/MWCNTs
Chemical Engineering Journal, 2014Co-Authors: Yingying Luo, Yinhua Jiang, Dandan Wang, Lili Yang, Pengwei Huo, Xuliang Bai, Xulan Xie, Pengyi YangAbstract:Abstract The magnetic and dual conductive imprinted photocatalysts (MCIPs) were synthesized through the suspension polymerization method. TiO 2 /Fe 3 O 4 /MWCNTs, 1-Methylimidazole-2-thiol and pyrrole were used as supports, template molecule and functional monomer, respectively. The MCIPs were further characterized by X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), scanning electron microscopy (SEM), transmission electron microscope (TEM), UV–visible diffuse reflectance spectra (UV–vis DRS), thermogravimetric analysis (TGA) and vibrating sample magnetometer (VSM). The result revealed that polypyrrole (PPy) was formed and well embedded in the surface imprinted layer of TiO 2 /Fe 3 O 4 /MWCNTs. Owing to PPy and MWCNTs, the MCIPs was equipped with dual conductivity which was particularly useful for photodegradation of 1-Methylimidazole-2-thiol in aqueous solution under ultraviolet irradiation. Through a series investigation of factors, it was obvious that when the polymerization time was 24 h and the adding dose of pyrrole was 8 mmol, the resulting MCIPs obtained the highest photocatalytic ability. In addition, the photodegradation process obeyed the pseudo-first-order kinetic reaction and exhibited an excellent selective degradation ability of 1-Methylimidazole-2-thiol. The degradation intermediate products and mechanism of 1-Methylimidazole-2-thiol were further discussed.
