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1997 Volume 14 Issue 6
1997, 14(6): 1-4
Abstract:
The crystallization behavior and compatibility of linear low density polyethylene/ethylene-acrylic acid copolymer (13.9mol% AA content), LLDPE/EAA, blends have been studied by means of DMA, DSC, PLM, WAXD and mechanical property measurements. The results show that the noncrystalline phases of LLDPE and EAA are partially compatible, but they can not cocrystallize. Both two components have effects on the crystallization behavior of the blends. LLDPE crystallizes faster than EAA in the blends. However, they do not enter into other's crystal cell. LLDPE and EAA are mechanically compatible. The blends with low EAA content(lower than 40%) show good tensile properties.
The crystallization behavior and compatibility of linear low density polyethylene/ethylene-acrylic acid copolymer (13.9mol% AA content), LLDPE/EAA, blends have been studied by means of DMA, DSC, PLM, WAXD and mechanical property measurements. The results show that the noncrystalline phases of LLDPE and EAA are partially compatible, but they can not cocrystallize. Both two components have effects on the crystallization behavior of the blends. LLDPE crystallizes faster than EAA in the blends. However, they do not enter into other's crystal cell. LLDPE and EAA are mechanically compatible. The blends with low EAA content(lower than 40%) show good tensile properties.
1997, 14(6): 5-8
Abstract:
Seventeen noval oximinophosphorothioates containing 1,2,4-triazole were synthesized by reaction of thiophosphoryl chlorides with ketoximes and characterized by 1H NMR, IR, MS and elemental analysis. The preliminary biological tests indicated that some compounds have insecticidal activity.
Seventeen noval oximinophosphorothioates containing 1,2,4-triazole were synthesized by reaction of thiophosphoryl chlorides with ketoximes and characterized by 1H NMR, IR, MS and elemental analysis. The preliminary biological tests indicated that some compounds have insecticidal activity.
1997, 14(6): 9-12
Abstract:
Eighteen oxime esters(ethers) containing 1,2,4-triazoyl group were prepared and their structures were confirmed by 1H NMR, IR and elemental analysis. The preliminary tests showed that some of them have good PGR activities.
Eighteen oxime esters(ethers) containing 1,2,4-triazoyl group were prepared and their structures were confirmed by 1H NMR, IR and elemental analysis. The preliminary tests showed that some of them have good PGR activities.
1997, 14(6): 13-17
Abstract:
Using surface enhanced Raman scattering (SERS) and time-resolved surface enhanced Raman scattering (TRSERS) spectroscopies, the electrochemical coadsorption of 1-allyl-2-thiourea(ATU) with one or two kinds of eletrolyte anions at sliver electrodes in perchloric acid, sulphuric acid, nitric acid medium respectively has been studied. The orientation of ATU on the surface was proposed. The results indicate that these anions can be coadsorbed on the electrode, induced by the protonated amino groups of ATU surface. The order of the coadsorption with ATU was found to be:ClO4- > SO42- > NO3-.
Using surface enhanced Raman scattering (SERS) and time-resolved surface enhanced Raman scattering (TRSERS) spectroscopies, the electrochemical coadsorption of 1-allyl-2-thiourea(ATU) with one or two kinds of eletrolyte anions at sliver electrodes in perchloric acid, sulphuric acid, nitric acid medium respectively has been studied. The orientation of ATU on the surface was proposed. The results indicate that these anions can be coadsorbed on the electrode, induced by the protonated amino groups of ATU surface. The order of the coadsorption with ATU was found to be:ClO4- > SO42- > NO3-.
1997, 14(6): 18-21
Abstract:
The reduction of nitro compounds by the nanometric sodium hydride (NaH*) in the presence of a transition metal salt has been studied. The results show that the reductive activity of the nanometric NaH is greatly enhanced by the addition of a transition metal salt, so that a conversion of nitrobenzene over 90% can be achieved in a short time. It is found that nickel salt is the best promoter for the aniline formation, then is the manganese salt. Different hydrides (LiH*, NaH*, KH*) exhibit different selectivities towards reaction pro-ducts in the reduction of nitrobenzene. The results of reduction of several nitro compounds reveal that the combination of NaH* and a nickel salt is an effective reagent for the reduction of aromatic nitro compounds to their corresponding amines.
The reduction of nitro compounds by the nanometric sodium hydride (NaH*) in the presence of a transition metal salt has been studied. The results show that the reductive activity of the nanometric NaH is greatly enhanced by the addition of a transition metal salt, so that a conversion of nitrobenzene over 90% can be achieved in a short time. It is found that nickel salt is the best promoter for the aniline formation, then is the manganese salt. Different hydrides (LiH*, NaH*, KH*) exhibit different selectivities towards reaction pro-ducts in the reduction of nitrobenzene. The results of reduction of several nitro compounds reveal that the combination of NaH* and a nickel salt is an effective reagent for the reduction of aromatic nitro compounds to their corresponding amines.
1997, 14(6): 22-25
Abstract:
Two anthraquinone derivatives with different substituents were synthesized. Their crystallization temperatures were determined by DSC. The effects of the structure of compounds on their crystallization temperature were studied by means of molecular mechanics. The reflectivity contrast of two compounds at 632.8 nm were 60% and 20% respectively. The morphology of the crystalline and amorphous phase of the films were investigated by SEM.
Two anthraquinone derivatives with different substituents were synthesized. Their crystallization temperatures were determined by DSC. The effects of the structure of compounds on their crystallization temperature were studied by means of molecular mechanics. The reflectivity contrast of two compounds at 632.8 nm were 60% and 20% respectively. The morphology of the crystalline and amorphous phase of the films were investigated by SEM.
1997, 14(6): 26-29
Abstract:
The aN-index based on the quantum theory performs well but it can only be used for saturated hydrocarbons. An extended aN-index called the general aN-index has been developed and a new scheme for its calculation is adapted to obtain a set of parameters of orbital interactions. The general aN-index can be used for almost all kinds of organic compounds including those containing heteroatoms and multiple bonds. The procedure for computing the general aN-index is described and some examples of applications of the general aN-index are given in the paper.
The aN-index based on the quantum theory performs well but it can only be used for saturated hydrocarbons. An extended aN-index called the general aN-index has been developed and a new scheme for its calculation is adapted to obtain a set of parameters of orbital interactions. The general aN-index can be used for almost all kinds of organic compounds including those containing heteroatoms and multiple bonds. The procedure for computing the general aN-index is described and some examples of applications of the general aN-index are given in the paper.
1997, 14(6): 30-33
Abstract:
The liquid crystalline phase micell formed from cetyltrimethylammonium hydro-xide was used as template with simultaneous introduction of a synergistic extractant TOPO-D2EPHA into it. A mesoporous molecular sieve embedded with synergistic extractant MCM-TP was obtained. It is formed through the self-assembly process between the hydrophilic groups of the micell and organic silicate anions. The results from TEM, XRD, and 29Si-MASNMR showed that the sieve had a similar hexagonal arrangement of uniform mesopores as that of MCM-41, but an improved hydrothermal stability with saturation adsorption of 0.015 mmol[Pd]/g.
The liquid crystalline phase micell formed from cetyltrimethylammonium hydro-xide was used as template with simultaneous introduction of a synergistic extractant TOPO-D2EPHA into it. A mesoporous molecular sieve embedded with synergistic extractant MCM-TP was obtained. It is formed through the self-assembly process between the hydrophilic groups of the micell and organic silicate anions. The results from TEM, XRD, and 29Si-MASNMR showed that the sieve had a similar hexagonal arrangement of uniform mesopores as that of MCM-41, but an improved hydrothermal stability with saturation adsorption of 0.015 mmol[Pd]/g.
1997, 14(6): 34-37
Abstract:
The phases and compositions of sodium zeolite A, X and Y before and after exchange with lanthanum ions were determined by X-ray, atomic absorbtion spectrometry, differential thermal gravimentric analysis and chemical analysis. The ionic conductivity was measured by alternating impedance spectrograph. The dominant mobile charge carrier in these system is hydrated Na+. The activation energies of sidium zeolite A, X and Y obtained from the relationship between conductivity and temperature are 54.9 kJ/mol, 38.8 kJ/mol and 49.6 kJ/mol respectively. Appropriately exchanged with lanthanum ions, the conductivity apparent activation energies of zeolite LaNaA, LaNaX and LaNaY can be decreased to 34.6 kJ/mol, 27.9 kJ/mol and 41.3 kJ/mol respectively. The effect of exchanged lanthanum contents on the migration of sodium ion of the zeolites has been discussed.
The phases and compositions of sodium zeolite A, X and Y before and after exchange with lanthanum ions were determined by X-ray, atomic absorbtion spectrometry, differential thermal gravimentric analysis and chemical analysis. The ionic conductivity was measured by alternating impedance spectrograph. The dominant mobile charge carrier in these system is hydrated Na+. The activation energies of sidium zeolite A, X and Y obtained from the relationship between conductivity and temperature are 54.9 kJ/mol, 38.8 kJ/mol and 49.6 kJ/mol respectively. Appropriately exchanged with lanthanum ions, the conductivity apparent activation energies of zeolite LaNaA, LaNaX and LaNaY can be decreased to 34.6 kJ/mol, 27.9 kJ/mol and 41.3 kJ/mol respectively. The effect of exchanged lanthanum contents on the migration of sodium ion of the zeolites has been discussed.
1997, 14(6): 38-41
Abstract:
The miscibility and aggregation structure of P(HB-co-HV)/PVPh blends have been investigated by DSC, FTIR, 13C NMR, WAXD, SAXS. The results show that the intermolecular hydrogen bonding formed between the components makes the blends completely miscible in the whole composition range in the melt state. The solid state 13C NMR results show that the blend of P(HB-co-HV)/PVPh(50/50) mixed on a scale smaller than 3.4 nm. The SAXS results show that the long periods of the blends increase with the increase of PVPh content, indicating that the amorphous PVPh was dispersed between the lamellae forming the amorphous part with amorphous P(HB-co-HV).
The miscibility and aggregation structure of P(HB-co-HV)/PVPh blends have been investigated by DSC, FTIR, 13C NMR, WAXD, SAXS. The results show that the intermolecular hydrogen bonding formed between the components makes the blends completely miscible in the whole composition range in the melt state. The solid state 13C NMR results show that the blend of P(HB-co-HV)/PVPh(50/50) mixed on a scale smaller than 3.4 nm. The SAXS results show that the long periods of the blends increase with the increase of PVPh content, indicating that the amorphous PVPh was dispersed between the lamellae forming the amorphous part with amorphous P(HB-co-HV).
1997, 14(6): 42-44
Abstract:
Transparent ceramic film has been prepared by sol-gel method using isopropyl aluminum as raw material. The structure and types of the crystals obtained from Al2O3 gel on heating at 400~1000℃ have been investigated by XRD, XPS and IR techniques.
Transparent ceramic film has been prepared by sol-gel method using isopropyl aluminum as raw material. The structure and types of the crystals obtained from Al2O3 gel on heating at 400~1000℃ have been investigated by XRD, XPS and IR techniques.
1997, 14(6): 45-47
Abstract:
The diazoresin has been prepared by condensation reaction from paraformaldehyde[(CH2O)n] and diphenylamine-4-diazonium salt[-N2+X-] in concentrated sulfuric acid. The effects of stoichiometric ratio, condensation temperature and reaction time on specific viscosity of the diazoresin were studied. With the molar ratio of (CH2O)n/-N2+X-=1.2 at condensation temperature of 0~5℃, diazoresin with fair useful property was obtained.
The diazoresin has been prepared by condensation reaction from paraformaldehyde[(CH2O)n] and diphenylamine-4-diazonium salt[-N2+X-] in concentrated sulfuric acid. The effects of stoichiometric ratio, condensation temperature and reaction time on specific viscosity of the diazoresin were studied. With the molar ratio of (CH2O)n/-N2+X-=1.2 at condensation temperature of 0~5℃, diazoresin with fair useful property was obtained.
1997, 14(6): 48-50
Abstract:
Two indodicarbocyanine and indotricarbocyanine dyes were synthesized. The structure of dyes were confirmed by elemental analysis, IR and 1H NMR measurements. The film medium containing cyanine dye and polymer on a substrate were perpared by spin-coating process. Both of the optical absorption spectra and optical constants of the film were investigated. At optimum recording condition, 58 dB CNR was obtained. The film is applicable for the optical disk storage medium working at 830 nm wavelength.
Two indodicarbocyanine and indotricarbocyanine dyes were synthesized. The structure of dyes were confirmed by elemental analysis, IR and 1H NMR measurements. The film medium containing cyanine dye and polymer on a substrate were perpared by spin-coating process. Both of the optical absorption spectra and optical constants of the film were investigated. At optimum recording condition, 58 dB CNR was obtained. The film is applicable for the optical disk storage medium working at 830 nm wavelength.
1997, 14(6): 51-53
Abstract:
The aggregation behaviour of mixed surfactants, sodium bis(2-ethylhexyl) sulfosuccinate and Brij30, in n-heptane has been investigated by iodine spectrometric method. The results showed that the CMC of the mixed surfactants firstly decreased and then increased with the increase of the proportion of nonionic surfactant Brij30 due to electric interaction and geometry of the surfactants. The water solubilization investigation indicated that at lower surfactant concentration the solubilizing capacity of the mixed reverse micelles firstly increased and then decreased with the increase of the proportion of Brij30. The difference of CMC values determined by iodine spectrometric method and water solubilization has been discussed.
The aggregation behaviour of mixed surfactants, sodium bis(2-ethylhexyl) sulfosuccinate and Brij30, in n-heptane has been investigated by iodine spectrometric method. The results showed that the CMC of the mixed surfactants firstly decreased and then increased with the increase of the proportion of nonionic surfactant Brij30 due to electric interaction and geometry of the surfactants. The water solubilization investigation indicated that at lower surfactant concentration the solubilizing capacity of the mixed reverse micelles firstly increased and then decreased with the increase of the proportion of Brij30. The difference of CMC values determined by iodine spectrometric method and water solubilization has been discussed.
Synthesis of the Second-Order Nonlinear Optical Polymers Based on Crosslinked Multihydroxyloligomers
1997, 14(6): 54-56
Abstract:
p-Nitroaniline and 4-amino-4'-nitrobiphenyl were reacted separately with diglycidylbisphenol A to gain multihydroxyl oligomers. The two oligomers were crosslinked with o-phthaloxyl dichloride and toluene-2,4-diisocyanate to produce corresponding cross-linking polymers. Poling and crosslinking were carried out at the same time. The crosslinking reactions were studied by FT-IR. The orientation and stability of the crosslinked poled polymers were studied by UV-Vis spectra. The crosslinked polymers based on nitro-biphenyl amine unit exhibit lower original orientation degree, but better orientational stability at 80℃.
p-Nitroaniline and 4-amino-4'-nitrobiphenyl were reacted separately with diglycidylbisphenol A to gain multihydroxyl oligomers. The two oligomers were crosslinked with o-phthaloxyl dichloride and toluene-2,4-diisocyanate to produce corresponding cross-linking polymers. Poling and crosslinking were carried out at the same time. The crosslinking reactions were studied by FT-IR. The orientation and stability of the crosslinked poled polymers were studied by UV-Vis spectra. The crosslinked polymers based on nitro-biphenyl amine unit exhibit lower original orientation degree, but better orientational stability at 80℃.
1997, 14(6): 57-59
Abstract:
The SCC susceptibility of 1Cr18Ni9Ti austenitic stainless steel in 0.5 mol/L HCl+0.5 mol/L NaCl solution and the inhibiting effects of propargyl alcohol(PA) on SCC and general corrosion were investigated by slow strain rate tests(SSRT), polarization curves and electrochemical impedance spectroscopy(EIS). The results indicated that the inhibitive action of PA can be attributed to its adsorption and inhibiting effects on the anodic reaction of metal dissolution due to the effect of blocking the active sites on metal surface.
The SCC susceptibility of 1Cr18Ni9Ti austenitic stainless steel in 0.5 mol/L HCl+0.5 mol/L NaCl solution and the inhibiting effects of propargyl alcohol(PA) on SCC and general corrosion were investigated by slow strain rate tests(SSRT), polarization curves and electrochemical impedance spectroscopy(EIS). The results indicated that the inhibitive action of PA can be attributed to its adsorption and inhibiting effects on the anodic reaction of metal dissolution due to the effect of blocking the active sites on metal surface.
1997, 14(6): 60-62
Abstract:
A porrous support has been obtained from spherical fused iron catalyst after its potassium ions were dissoluted out by water. Impregnation such a dried porrous support with a mixture of Ce(NO3)3 and KNO3 gave a catalyst with a higher activity for ammonia synthesis. The presence of CeO2 in the catalyze after calcination was confirmed by X-ray analysis. The results showed that the optimum ratio of K+ to Ce3+ in impregnation mixture was 1:1.
A porrous support has been obtained from spherical fused iron catalyst after its potassium ions were dissoluted out by water. Impregnation such a dried porrous support with a mixture of Ce(NO3)3 and KNO3 gave a catalyst with a higher activity for ammonia synthesis. The presence of CeO2 in the catalyze after calcination was confirmed by X-ray analysis. The results showed that the optimum ratio of K+ to Ce3+ in impregnation mixture was 1:1.
1997, 14(6): 63-65
Abstract:
Nine title compounds used in ferroelectric liquid crystal materials as doping agents were synthesized and characterized.
Nine title compounds used in ferroelectric liquid crystal materials as doping agents were synthesized and characterized.
1997, 14(6): 66-68
Abstract:
The high-performance liquid chromatography(HPLC) has been used for quantitative determination of o,m,p-chlorodiphenylmethane(CDPM) from the reaction products of benzene with p-chlorobenzyl chloride for p-CDPM preparation. The detection limits of the method for o,m,p-CDPM were 0.35, 0.40 and 0.32 mg/L, respectively. The method was applied to gain the optimum constitution of the catalysts used in the preparation. The results showed that nitro compounds could prevent the decomposition of diphenylmethane and its chloride. The yield of p-CDPM was higher than 96%, when AlCl3(4 g)+EtNO2(1.5 mL) were used as catalyst.
The high-performance liquid chromatography(HPLC) has been used for quantitative determination of o,m,p-chlorodiphenylmethane(CDPM) from the reaction products of benzene with p-chlorobenzyl chloride for p-CDPM preparation. The detection limits of the method for o,m,p-CDPM were 0.35, 0.40 and 0.32 mg/L, respectively. The method was applied to gain the optimum constitution of the catalysts used in the preparation. The results showed that nitro compounds could prevent the decomposition of diphenylmethane and its chloride. The yield of p-CDPM was higher than 96%, when AlCl3(4 g)+EtNO2(1.5 mL) were used as catalyst.
1997, 14(6): 69-71
Abstract:
The results of experiments on cytoxicity and activity of anti-influenza virus using cell-cultivation method showed that three of the ten heteropoly compounds i.e. K7SiV3W9O40·nH2O, K6BVW11O40·nH2O and K6GeVW11O40·nH2O had good inhibition effect to influenza virus.
The results of experiments on cytoxicity and activity of anti-influenza virus using cell-cultivation method showed that three of the ten heteropoly compounds i.e. K7SiV3W9O40·nH2O, K6BVW11O40·nH2O and K6GeVW11O40·nH2O had good inhibition effect to influenza virus.
1997, 14(6): 72-74
Abstract:
A novel type of azaaromatic quaternary salt, imidazolium estrogens were synthesized from estradiol by bromoethylation, imidazolylation and coupling reactions. All compounds obtained were confirmed by MS, 1H NMR, IR measurements and elemental analysis.
A novel type of azaaromatic quaternary salt, imidazolium estrogens were synthesized from estradiol by bromoethylation, imidazolylation and coupling reactions. All compounds obtained were confirmed by MS, 1H NMR, IR measurements and elemental analysis.
1997, 14(6): 75-77
Abstract:
The adsorption of low concentration of free acid by regenerable chitin was followed by electric conductance measurement. The effect of media such as foreign organic solvent on adsorption was discussed. Experimental results shew that the apparent adsorption constants decreases with decreasing dielectric constant(X) in an adsorption system.
The adsorption of low concentration of free acid by regenerable chitin was followed by electric conductance measurement. The effect of media such as foreign organic solvent on adsorption was discussed. Experimental results shew that the apparent adsorption constants decreases with decreasing dielectric constant(X) in an adsorption system.
1997, 14(6): 78-80
Abstract:
Two ternary complexes Eu(TTA)3L and Eu(BTA)3L (where TTA=thenoyltrifluoroacetone, BTA=benzoyltrifluoroacetone, L=4,5 diazafluorene 9 one) have been synthesized and characterized by elemental analysis, IR, UV and fluorescence spectrum analyses. The results showed that in methyl cyanide the complexes gave a higher fluorescence intensity.
Two ternary complexes Eu(TTA)3L and Eu(BTA)3L (where TTA=thenoyltrifluoroacetone, BTA=benzoyltrifluoroacetone, L=4,5 diazafluorene 9 one) have been synthesized and characterized by elemental analysis, IR, UV and fluorescence spectrum analyses. The results showed that in methyl cyanide the complexes gave a higher fluorescence intensity.
1997, 14(6): 81-83
Abstract:
The rodlike liquid crystalline compound of U-diketone and its complex with terminal carbonyl rhodium were synthesized and characterized by elemental analysis, IR, UV and 1H NMR. Its property was studied by DSC and polarizing microscope. The complex was shown to be a nematic thermotropical liquid crystal.
The rodlike liquid crystalline compound of U-diketone and its complex with terminal carbonyl rhodium were synthesized and characterized by elemental analysis, IR, UV and 1H NMR. Its property was studied by DSC and polarizing microscope. The complex was shown to be a nematic thermotropical liquid crystal.
1997, 14(6): 84-86
Abstract:
The lowest triplet state energies of phthalic acids were determined by measuring the luminescence spectra of their corresponding gadolinium complexes as model compounds. According to the energy match principle, then a series of terbium homopolynuclear and heteropolynuclear complexes with phthalic acids were synthesized and characterized. The luminescence properties of terbium complexes and the influences of inert rare earth ions (La3+, Gd3+, Y3+) on the luminescence properties of these complexes have been studied.
The lowest triplet state energies of phthalic acids were determined by measuring the luminescence spectra of their corresponding gadolinium complexes as model compounds. According to the energy match principle, then a series of terbium homopolynuclear and heteropolynuclear complexes with phthalic acids were synthesized and characterized. The luminescence properties of terbium complexes and the influences of inert rare earth ions (La3+, Gd3+, Y3+) on the luminescence properties of these complexes have been studied.
1997, 14(6): 87-89
Abstract:
Isobutyric acid has been synthesized by oxidation of isobutyl alcohol using tetrabutylammonium hydrosulfate as phase transfer catalyst in sulfuric acid. The oxidant Cr(Ⅵ) was obtained electrolytically from Cr(Ⅲ) salt solution resulted from above oxidation reaction.
Isobutyric acid has been synthesized by oxidation of isobutyl alcohol using tetrabutylammonium hydrosulfate as phase transfer catalyst in sulfuric acid. The oxidant Cr(Ⅵ) was obtained electrolytically from Cr(Ⅲ) salt solution resulted from above oxidation reaction.
1997, 14(6): 90-92
Abstract:
The Co species in Co/HZSM-5 appeared to be in the phase of Co3O4, CoO, CoAl2O4 spinel, exchanged Co species and metal Co, depending on the calcination and reduction temperature. Co species in the phase of Co3O4, CoO and exchanged Co were the active sites on styrene formation, but in the formation of styrene over metal Co phase the crystal plane of the catalyst plays an important role.
The Co species in Co/HZSM-5 appeared to be in the phase of Co3O4, CoO, CoAl2O4 spinel, exchanged Co species and metal Co, depending on the calcination and reduction temperature. Co species in the phase of Co3O4, CoO and exchanged Co were the active sites on styrene formation, but in the formation of styrene over metal Co phase the crystal plane of the catalyst plays an important role.
1997, 14(6): 93-95
Abstract:
Disodium polyoxyethylene/polyoxypropylene fatty acid ethanolamide sulfosuccinates were prepared and some of their surfactancies investigated. With the increase in the polymerization number of oxyalkylene or in the carbon atom number of fatty acid, the critical micelle concentration decreased, the foaming ability reduced, the wetting power of the former reduced and that of the latter tended to enhance. The former was inferior in wetting power to the latter, whereas their difference in foaming ability was insignificant. Used as emulsifiers, the prepared sulfosuccinates showed better emulsion stability compared to sodium lauryl sulfate.
Disodium polyoxyethylene/polyoxypropylene fatty acid ethanolamide sulfosuccinates were prepared and some of their surfactancies investigated. With the increase in the polymerization number of oxyalkylene or in the carbon atom number of fatty acid, the critical micelle concentration decreased, the foaming ability reduced, the wetting power of the former reduced and that of the latter tended to enhance. The former was inferior in wetting power to the latter, whereas their difference in foaming ability was insignificant. Used as emulsifiers, the prepared sulfosuccinates showed better emulsion stability compared to sodium lauryl sulfate.
1997, 14(6): 96-97
Abstract:
Ten azo urea compounds have been synthesized by using DMF-NOx as oxidant in excellent yield under mild condition. Their structure were confirmed by elemental analysis, UV, IR and 1H NMR spectrometry measurements.
Ten azo urea compounds have been synthesized by using DMF-NOx as oxidant in excellent yield under mild condition. Their structure were confirmed by elemental analysis, UV, IR and 1H NMR spectrometry measurements.
1997, 14(6): 98-100
Abstract:
Five novel bis-schiff base complexes M(PMαFP)2 en have been synthesized, where (HPMαFP)2 en=N,N'-bis[(1-phenyl-3-methyl-5-oxo-4-pyrazolinyl)α-furylmethylidyne] ethylenediimine, M=Cu(Ⅱ), Ni(Ⅱ), Co(Ⅱ), Pd(Ⅱ), Pt(Ⅱ). They were characterized by elemental analysis, IR, UV-vis, 1H NMR, 13C NMR, magnetic moment and molar conductance measurements. The results showed that the complexes are all of quadricoordinate square-planar geometry. The antibacterial experiment indicated that they have high antibacterial activities against S. aureus, B.subtillis, E.coli, E.carotovora and C.flaccumfaciens.
Five novel bis-schiff base complexes M(PMαFP)2 en have been synthesized, where (HPMαFP)2 en=N,N'-bis[(1-phenyl-3-methyl-5-oxo-4-pyrazolinyl)α-furylmethylidyne] ethylenediimine, M=Cu(Ⅱ), Ni(Ⅱ), Co(Ⅱ), Pd(Ⅱ), Pt(Ⅱ). They were characterized by elemental analysis, IR, UV-vis, 1H NMR, 13C NMR, magnetic moment and molar conductance measurements. The results showed that the complexes are all of quadricoordinate square-planar geometry. The antibacterial experiment indicated that they have high antibacterial activities against S. aureus, B.subtillis, E.coli, E.carotovora and C.flaccumfaciens.
