To evaluate the supplementary blue light intensity on growth and health-promoting compounds in pak choi（Brassica campestris ssp.chinensis var.communis）,four blue light intensity treatments（T0,T50,T100 and T150 indi...To evaluate the supplementary blue light intensity on growth and health-promoting compounds in pak choi（Brassica campestris ssp.chinensis var.communis）,four blue light intensity treatments（T0,T50,T100 and T150 indicate 0,50,100,and 150μmol m^（-2） s^（-1）,respectively）were applied 10 days before harvest under greenhouse conditions.Both of cultivars（greenand red-leaf pak choi）under T50 had the highest yield,content of chlorophyll and sugars.With light intensity increasing,antioxidant compounds（vitamin C and carotenoids）significantly increased,while nitrate content showed an opposite trend.The health-promoting compounds（phenolics,flavonoids,anthocyanins,and glucosinolates）were significantly higher under supplementary light treatment than T0,so as the antioxidant capacity（2,2-diphenyl-1-picrylhydrazyl and ferric-reducing antioxidant power）.The species-specific differences in photosynthetic pigment and health-promoting compounds was found in green-and red-leaf pak choi.T50 treatment could be used for yield improvement,whereas T100 treatment could be applied for quality improvement.Results showed that blue light intensity can regulate the accumulation of biomass,morphology and health-promoting compounds in pak choi under greenhouse conditions.展开更多
One new pillared layered zinc hydroxide {Zn4（OH）6（ndc）·2（H2 O）}n,（H2 ndc =2,6-na-phthalenedicarboxylic acid） has been achieved under hydrothermal conditions by using2,6-na-phthalenedicarboxylic acid, 2,4-...One new pillared layered zinc hydroxide {Zn4（OH）6（ndc）·2（H2 O）}n,（H2 ndc =2,6-na-phthalenedicarboxylic acid） has been achieved under hydrothermal conditions by using2,6-na-phthalenedicarboxylic acid, 2,4-diami-6-phenyl-1,3,5-triazine as well as Zn（OAc）2·2 H2 O,and structurally characterized by X-ray single-crystal diffraction, IR spectra, elemental analysis,powder X-ray diffraction（PXRD） and thermogravimetric analysis（TGA）. The X-ray single-crystal diffraction proves that the title compound is in monoclinic system, space group P21/c with a =16.362（8）, b = 9.324（5）, c = 5.364（3） ?, β = 99.081（9）°, V = 808.1（7） ?3, Dc = 2.522 g/cm3, Mr =613.73, Z = 2, F（000） = 608, μ = 5.935 mm-1, GOOF = 1.050, R = 0.0469 and wR（Ⅰ > 2σ（Ⅰ）） =0.1291. In the title compound, the tetrahedral and octahedral zinc atoms are connected by μ3-OH groups to form zinc hydroxide inorganic layers extending parallel to the bc-plane. The adjacent layers are pillared by the connection of Zn2 atoms with ndc2-ligands to construct a three-dimensional（3D） structure; meanwhile, the interactions of five hydrogen bonds make the 3D network structure more stable. Furthermore, the title compound exhibits luminescent property at solid state.展开更多
One new Ni（Ⅱ） complex [Ni（H2L）]Cl（H2O）3 based on one in-situ synthesized Schiff base ligand H3L （H3L = bis（benzyl-2-pyridylidene）-diaminoguanidine） was prepared and structurally characterized by single-crys...One new Ni（Ⅱ） complex [Ni（H2L）]Cl（H2O）3 based on one in-situ synthesized Schiff base ligand H3L （H3L = bis（benzyl-2-pyridylidene）-diaminoguanidine） was prepared and structurally characterized by single-crystal X-ray diffraction method. The complex crystallizes in the monoclinic system, space group C2/c with a = 27.944（7）, b = 7.7405（19）, c = 25.999（7） ,A, β = 115.545（2）°, V = 5074（2） A^3, Mr = 566.69, Z = 8, Dc = 1.484 g/cm^3, F（000） = 2352,μ（MoKα） = 0.912 mm^-1, R = 0.0594 and wR = 0.1477 for 5145 observed reflections （1 〉 2σ（I））. The complex exhibits one mononuclear structure in which the Ni（Ⅱ） atom adopts a [NiN4] pseudo-planar square geometry. Interestingly, along the b axis, each two neighboring [Ni（H2L）]^＋ units by an inverse center form pairs of molecules through the intermolecular benzene-pyridine π…π interactions.展开更多
基金supported by the National Key Research and Development Program of China (2017YFD0701500)the Teamwork Projects Funded by Guangdong Natural Science Foundation, China (S2013030012842)+1 种基金the Guangdong Provincial Science & Technology Project, China (2015A020209146, 2015B090903074)the Guangzhou Science & Technology Project, China (201605030005, 201704020058)
文摘To evaluate the supplementary blue light intensity on growth and health-promoting compounds in pak choi（Brassica campestris ssp.chinensis var.communis）,four blue light intensity treatments（T0,T50,T100 and T150 indicate 0,50,100,and 150μmol m^（-2） s^（-1）,respectively）were applied 10 days before harvest under greenhouse conditions.Both of cultivars（greenand red-leaf pak choi）under T50 had the highest yield,content of chlorophyll and sugars.With light intensity increasing,antioxidant compounds（vitamin C and carotenoids）significantly increased,while nitrate content showed an opposite trend.The health-promoting compounds（phenolics,flavonoids,anthocyanins,and glucosinolates）were significantly higher under supplementary light treatment than T0,so as the antioxidant capacity（2,2-diphenyl-1-picrylhydrazyl and ferric-reducing antioxidant power）.The species-specific differences in photosynthetic pigment and health-promoting compounds was found in green-and red-leaf pak choi.T50 treatment could be used for yield improvement,whereas T100 treatment could be applied for quality improvement.Results showed that blue light intensity can regulate the accumulation of biomass,morphology and health-promoting compounds in pak choi under greenhouse conditions.
基金Supported by the National Natural Science Foundation of China(U1504209,21403053)Young Backbone Teacher Project of Henan Colleges and Universities(2016GGJS-023)Foundation of Henan University(0000A40478)
文摘One new pillared layered zinc hydroxide {Zn4（OH）6（ndc）·2（H2 O）}n,（H2 ndc =2,6-na-phthalenedicarboxylic acid） has been achieved under hydrothermal conditions by using2,6-na-phthalenedicarboxylic acid, 2,4-diami-6-phenyl-1,3,5-triazine as well as Zn（OAc）2·2 H2 O,and structurally characterized by X-ray single-crystal diffraction, IR spectra, elemental analysis,powder X-ray diffraction（PXRD） and thermogravimetric analysis（TGA）. The X-ray single-crystal diffraction proves that the title compound is in monoclinic system, space group P21/c with a =16.362（8）, b = 9.324（5）, c = 5.364（3） ?, β = 99.081（9）°, V = 808.1（7） ?3, Dc = 2.522 g/cm3, Mr =613.73, Z = 2, F（000） = 608, μ = 5.935 mm-1, GOOF = 1.050, R = 0.0469 and wR（Ⅰ > 2σ（Ⅰ）） =0.1291. In the title compound, the tetrahedral and octahedral zinc atoms are connected by μ3-OH groups to form zinc hydroxide inorganic layers extending parallel to the bc-plane. The adjacent layers are pillared by the connection of Zn2 atoms with ndc2-ligands to construct a three-dimensional（3D） structure; meanwhile, the interactions of five hydrogen bonds make the 3D network structure more stable. Furthermore, the title compound exhibits luminescent property at solid state.
基金This research was supported by the State Key Laboratory of Structural Chemistry, the Chinese Academy of Sciences (CAS), the National Science and Technology of China (001CB1089), the NNSFC (20273073, 20333070, 90206040) and NSF of Fujian Province (2005HZ01-1, 2004HZ01-1, 2003J042 and 2004J041)
文摘One new Ni（Ⅱ） complex [Ni（H2L）]Cl（H2O）3 based on one in-situ synthesized Schiff base ligand H3L （H3L = bis（benzyl-2-pyridylidene）-diaminoguanidine） was prepared and structurally characterized by single-crystal X-ray diffraction method. The complex crystallizes in the monoclinic system, space group C2/c with a = 27.944（7）, b = 7.7405（19）, c = 25.999（7） ,A, β = 115.545（2）°, V = 5074（2） A^3, Mr = 566.69, Z = 8, Dc = 1.484 g/cm^3, F（000） = 2352,μ（MoKα） = 0.912 mm^-1, R = 0.0594 and wR = 0.1477 for 5145 observed reflections （1 〉 2σ（I））. The complex exhibits one mononuclear structure in which the Ni（Ⅱ） atom adopts a [NiN4] pseudo-planar square geometry. Interestingly, along the b axis, each two neighboring [Ni（H2L）]^＋ units by an inverse center form pairs of molecules through the intermolecular benzene-pyridine π…π interactions.
