The plant plasma membrane(PM)H^(+)-ATPase is an essential enzyme controlling plant growth and development.It is an important factor in response to abiotic and biotic stresses and is subject to tight regulation.We are ...The plant plasma membrane(PM)H^(+)-ATPase is an essential enzyme controlling plant growth and development.It is an important factor in response to abiotic and biotic stresses and is subject to tight regulation.We are in demand for new sustainable natural growth regulators and as a key enzyme for regulation of transport into the plant cell the PM H^(+)-ATPase is a potential target for these.In this review,we have evaluated the known non-protein natural compounds with regulatory effects on the PM H^(+)-ATPase,focusing on their mechanism of action and their potential as biologicals/growth regulators in plant production of future sustainable agriculture.展开更多
A novel cadmium(Ⅱ) isothiocyanate complex [Cd(N-MeIM)2(SCN)2]n (N-MeIM=N-methylimidazole) has been prepared and characterized by spectroscopic analysis and crystallographic method. The title compound crystallize in t...A novel cadmium(Ⅱ) isothiocyanate complex [Cd(N-MeIM)2(SCN)2]n (N-MeIM=N-methylimidazole) has been prepared and characterized by spectroscopic analysis and crystallographic method. The title compound crystallize in the Triclinic system, space group P1, with lattice parameters a=0.589 50(12) nm, b=0.785 70(16) nm, c=0.882 00(18) nm, α=110.98(3)°, β=106.49(3)°, γ=95.08(3)°, and Z=1. The title compound exhibits an infinite chain structure in which each pair of Cd atoms is bridged by two η-1,3-SCN- groups. The unique Cd atom lies on an inversion centre and the coordination sphere is completed by two N-MeIM N atoms to form a CdS2N4 octahedron. The polymeric chains are further extended into three-dimensional network via π...π stackings interactions between the imidazole rings. The cyclic voltammetry behaviors of the compound on glass carbon electrode showed a typical irreversible process. CCDC: 265283.展开更多
Monocyclic nitrogen-rich 3-(aminomethyl)-4,5-diamine-1,2,4-triazole(1)and fused cyclic 3,7-diamine-6-(aminomethyl)-[1,2,4]triazolo[4,3-b][1,2,4]triazole(9)were synthesized through the convenient cyclization reaction f...Monocyclic nitrogen-rich 3-(aminomethyl)-4,5-diamine-1,2,4-triazole(1)and fused cyclic 3,7-diamine-6-(aminomethyl)-[1,2,4]triazolo[4,3-b][1,2,4]triazole(9)were synthesized through the convenient cyclization reaction from the readily available reactant.Their energetic salts with high nitrogen content were proved to be rare examples of divalent monocyclic/fused cyclic cationic salts according to the single crystal analyses.The structure of intermediate B was also identified and verified by its trivalent cation crystal 17.5H_2O indirectly.Energetic compounds 2-8 and 10-17 were fully characterized by NMR spectroscopy,infrared spectroscopy,differential scanning calorimetry,elemental analysis.These energetic salts exhibit good thermal stability with decomposition temperatures ranged from 182℃to 245℃.The sensitivity of compounds 2,6,10 and 14 is similar or superior to that of RDX while the others were much more insensitive to mechanical stimulate.Furthermore,detonation velocity of 10(8843 m/s)surpass that of RDX(D=8795 m/s).Considering the high gas production volume(≥808 L/kg)of 2,4,10and 12,constant-volume combustion experiments were conduct to evaluate their gas production capacities specifically.These compounds possess much higher maximum gas-production pressures(P_(max):7.88-10.08 MPa)than the commonly used reagent guanidine nitrate(GN:P_(max)=4.20 MPa),which indicate their strong gas production capacity.展开更多
A voltammetric determination of possible organic pollutants such as diol and phenolic compounds in water was studied using ferroceneboronic acid（FBA） as a redox-active marker.A cyclic voltammogram of FBA exhibited a...A voltammetric determination of possible organic pollutants such as diol and phenolic compounds in water was studied using ferroceneboronic acid（FBA） as a redox-active marker.A cyclic voltammogram of FBA exhibited a pair of oxidation and reduction peaks at 230 and 170 mV at pH 7.0,respectively,while another pair of redox peaks was observed in the presence of diol or phenolic compounds tested.The results were rationalized based on the formation of boronate esters of FBA with the added compounds.The changes in the redox peak currents were dependent on the concentration of the additives,suggesting a usefulness of FBA in the electrochemical determination of these compounds in water.展开更多
基金supported by the Novo Nordic Foundatioin grant number NNF19OC0056457the Danish Council for Independent Research,Technology and Production Sciences(FTP)grant no.DFF-4184-00548 COMBAT。
文摘The plant plasma membrane(PM)H^(+)-ATPase is an essential enzyme controlling plant growth and development.It is an important factor in response to abiotic and biotic stresses and is subject to tight regulation.We are in demand for new sustainable natural growth regulators and as a key enzyme for regulation of transport into the plant cell the PM H^(+)-ATPase is a potential target for these.In this review,we have evaluated the known non-protein natural compounds with regulatory effects on the PM H^(+)-ATPase,focusing on their mechanism of action and their potential as biologicals/growth regulators in plant production of future sustainable agriculture.
文摘A novel cadmium(Ⅱ) isothiocyanate complex [Cd(N-MeIM)2(SCN)2]n (N-MeIM=N-methylimidazole) has been prepared and characterized by spectroscopic analysis and crystallographic method. The title compound crystallize in the Triclinic system, space group P1, with lattice parameters a=0.589 50(12) nm, b=0.785 70(16) nm, c=0.882 00(18) nm, α=110.98(3)°, β=106.49(3)°, γ=95.08(3)°, and Z=1. The title compound exhibits an infinite chain structure in which each pair of Cd atoms is bridged by two η-1,3-SCN- groups. The unique Cd atom lies on an inversion centre and the coordination sphere is completed by two N-MeIM N atoms to form a CdS2N4 octahedron. The polymeric chains are further extended into three-dimensional network via π...π stackings interactions between the imidazole rings. The cyclic voltammetry behaviors of the compound on glass carbon electrode showed a typical irreversible process. CCDC: 265283.
基金supported by the National Natural Science Foundation of China(No.21875110,22075143)the Science Challenge Project(No.TZ2018004)the Qing Lan Project for the grant。
文摘Monocyclic nitrogen-rich 3-(aminomethyl)-4,5-diamine-1,2,4-triazole(1)and fused cyclic 3,7-diamine-6-(aminomethyl)-[1,2,4]triazolo[4,3-b][1,2,4]triazole(9)were synthesized through the convenient cyclization reaction from the readily available reactant.Their energetic salts with high nitrogen content were proved to be rare examples of divalent monocyclic/fused cyclic cationic salts according to the single crystal analyses.The structure of intermediate B was also identified and verified by its trivalent cation crystal 17.5H_2O indirectly.Energetic compounds 2-8 and 10-17 were fully characterized by NMR spectroscopy,infrared spectroscopy,differential scanning calorimetry,elemental analysis.These energetic salts exhibit good thermal stability with decomposition temperatures ranged from 182℃to 245℃.The sensitivity of compounds 2,6,10 and 14 is similar or superior to that of RDX while the others were much more insensitive to mechanical stimulate.Furthermore,detonation velocity of 10(8843 m/s)surpass that of RDX(D=8795 m/s).Considering the high gas production volume(≥808 L/kg)of 2,4,10and 12,constant-volume combustion experiments were conduct to evaluate their gas production capacities specifically.These compounds possess much higher maximum gas-production pressures(P_(max):7.88-10.08 MPa)than the commonly used reagent guanidine nitrate(GN:P_(max)=4.20 MPa),which indicate their strong gas production capacity.
基金supported in part by a Grant-in-Aid (Asia-Africa Program) from Tohoku University
文摘A voltammetric determination of possible organic pollutants such as diol and phenolic compounds in water was studied using ferroceneboronic acid（FBA） as a redox-active marker.A cyclic voltammogram of FBA exhibited a pair of oxidation and reduction peaks at 230 and 170 mV at pH 7.0,respectively,while another pair of redox peaks was observed in the presence of diol or phenolic compounds tested.The results were rationalized based on the formation of boronate esters of FBA with the added compounds.The changes in the redox peak currents were dependent on the concentration of the additives,suggesting a usefulness of FBA in the electrochemical determination of these compounds in water.
