Lead-free inorganic copper-silver-bismuth-halide materials have attracted more and more attention due to their environmental friendliness,high element abundance,and low cost.Here,we developed a strategy of one-step ga...Lead-free inorganic copper-silver-bismuth-halide materials have attracted more and more attention due to their environmental friendliness,high element abundance,and low cost.Here,we developed a strategy of one-step gas-solid-phase diffusioninduced reaction to fabricate a series of bandgap-tunable Cu_(a)Agm_(1)Bim_(2)I_(n)/CuI bilayer films due to the atomic diffusion effect for the first time.By designing and regulating the sputtered Cu/Ag/Bi metal film thickness,the bandgap of Cu_(a)Agm_(1)Bim_(2)I_(n)/CuI could be reduced from 2.06 to 1.78 eV.Solar cells with the structure of FTO/TiO_(2)/Cu_(a)Agm_(1)Bim_(2)I_(n)/CuI/carbon were constructed,yielding a champion power conversion efficiency of 2.76%,which is the highest reported for this class of materials owing to the bandgap reduction and the peculiar bilayer structure.The current work provides a practical path for developing the next generation of efficient,stable,and environmentally friendly photovoltaic materials.展开更多
目的研究SOCS1基因的2个标签单核苷酸多态性位点(tag single nucleotide polymorphisms,Tag SNP)rs243327、rs33932899与凉山彝族人群肺结核发生风险的遗传关联性。方法2015年3月至2016年6月在凉山彝族自治州共采集188例彝族肺结核患者...目的研究SOCS1基因的2个标签单核苷酸多态性位点(tag single nucleotide polymorphisms,Tag SNP)rs243327、rs33932899与凉山彝族人群肺结核发生风险的遗传关联性。方法2015年3月至2016年6月在凉山彝族自治州共采集188例彝族肺结核患者(肺结核组)和229例彝族健康人(健康对照组)全血样本。运用直接测序法对rs243327、rs33932899进行基因分型,应用哈-温平衡检验所选样本的群体代表性,采用卡方检验比较肺结核组和健康对照组之间基因型和等位基因频率分布的差异,评价SOCS1基因SNP与肺结核发生风险的关联性。结果 rs243327、rs33932899在肺结核组和健康对照组中的基因型分布均符合哈-温平衡。在rs243327位点处肺结核组CC基因型频率显著高于健康对照组(CC vs CT:OR=1.611,95%CI=1.058-2.453,P=0.026;CC vs CT+TT:OR=1.651,95%CI=1.107-2.461,P=0.014),提示rs243327位点CC基因型可能增加凉山彝族人群肺结核的发生风险,可能是凉山彝族人群肺结核的易感基因型;C等位基因频率亦显著高于健康对照组(C vs T:OR=1.516,95%CI=1.089-2.109,P=0.013),提示C等位基因可能是凉山彝族人群肺结核的易感等位基因。在rs33932899位点处基因型和等位基因分布在肺结核组和健康对照组之间均无统计学差异(GG vs CG:OR=1.148,95%CI=0.762-1.731,P=0.436;GG vs CC:OR=2.184,95%CI=0.874-5.454,P=0.088;GG/CG+CC:OR=1.229,95%CI=0.875-1.928,P=0.193;G vs C:OR=1.290,95%CI=0.932-1.785,P=0.124),提示rs33932899位点可能与凉山彝族人群肺结核的发生风险无相关性。结论 SOCS1基因单核苷酸多态性可能与凉山彝族人群肺结核的发生发展存在遗传关联。展开更多
An operationally simple and inexpensive catalyst system was developed for the cross coupling of potassium thiocyanate with aryl iodides by using CuI as catalyst, 1, 10-phenanthroline as ligand, and tetraethylammonium ...An operationally simple and inexpensive catalyst system was developed for the cross coupling of potassium thiocyanate with aryl iodides by using CuI as catalyst, 1, 10-phenanthroline as ligand, and tetraethylammonium iodide as activator. The procedure is applicable for the synthesis of diverse aryl thiocyanates without any exotic, poisonous reagents.展开更多
"Sheng Qing Yi Hao",a new fruit radish F1 hybrid,which was bred from HSR54 A,a self-bred sterile line,and HS1356,an excellent male parent.The flesh of the roots is emerald green,delicate,sweet and crisp.The ..."Sheng Qing Yi Hao",a new fruit radish F1 hybrid,which was bred from HSR54 A,a self-bred sterile line,and HS1356,an excellent male parent.The flesh of the roots is emerald green,delicate,sweet and crisp.The skin of the roots is little spicy.It takes about 70 d from sowing to maturity.The fleshy roots have a length of 22-27 cm,a diameter of 6-8 cm,and a root weight of 0.8-1.1 kg.The F1 hybrid has stronger resistance to soft rot disease in the field the control group‘Chengyangqing’.It is suitable for cultivation in greenhouse in spring and open field in autumn in north China.展开更多
Using the ligand bis（3-（1H-imidazol-1-yl）-1-phenylpropan-1-one） L, two novel complexes [CuL2（ph））]·H2O 1 and [ZnL2（tp）] 2 （ph = phthalic acid, tp = terephthalic acid） have been synthesized and their cr...Using the ligand bis（3-（1H-imidazol-1-yl）-1-phenylpropan-1-one） L, two novel complexes [CuL2（ph））]·H2O 1 and [ZnL2（tp）] 2 （ph = phthalic acid, tp = terephthalic acid） have been synthesized and their crystal structures were determined by single-crystal X-ray diffraction analysis. Crystal data for 1： triclinic, space group P1^-, a = 9.4300（17）, b = 12.148（2）, c = 13.721（2） A, a = 109.620（2）,β = 94.351（2）, y = 94.830（2）°, C32H30N4O7Cu, Mr = 646.14, V= 1466.2（4） A^3, Z = 2, Dc = 1.464 g/cm3, It（MoKa） = 0.801 mm^-1, F（000） = 670, the final R = 0.0337 and wR = 0.0859 for 5122 observed reflections with I 〉 2σ（I）, And those for 2： monoclinic, space group P2/n, a = 7.1866（11）, b = 14.144（2）, c = 14.407（2）/k, β = 101.427（2）°, C32H28N4O6Zn, Mr = 629.95, V = 1435.4（4） A3, Z = 2, Dc = 1.457 g/cm3, μ（MoKa） = 0.908 mm^-1, F（000） = 652, the final R = 0.0438 and wR= 0.0821 for 2546 observed reflections with I〉 2σ（I）. In 1 and 2, ph or tp ligauds bridge the six-coordinated copper（Ⅱ） or four-coordinated zinc（Ⅱ） ions forming 1D zigzag chains while L ligands act as the terminal monodentate ligand. It is noted that weak non-classical C-H…O plays the important and dominating roles in the formation of 2D supramolecular architectures of 1, but in 2 non-classical C-H…O and aromatic π…π Stacking interactions are quite important and play dominant roles in the self-assembly of 2D supramolecular architectures.展开更多
The detailed mechanism of CuI-catalyzed C-O intramolecular coupling reaction of 2-（2-bromo-4-fluoro-phenyl）-l- cyclohexen-1-yl trifluoromethane-sulfonate was studied with the density functional theory （DFT）. The g...The detailed mechanism of CuI-catalyzed C-O intramolecular coupling reaction of 2-（2-bromo-4-fluoro-phenyl）-l- cyclohexen-1-yl trifluoromethane-sulfonate was studied with the density functional theory （DFT）. The geometries of the reactants, transition states, intermediates and products were optimized at the B3LYP/6-31 ＋G＊ level. Meanwhile, the single point energy of species involved in gas and solvent at B3LYP/6-31 I＋G＊ level was individually investigated. Polarizable continuum models （PCM） were applied to the dioxane and water solutions at the same level, respectively. Results show that the rate-limiting step, M3→TS3, does not change in different solutions. However, the activation energy in a dioxane solution is lower than that in water, which explains the previous experimental results. Compared with the non-catalyzed reaction process, the activation energy of the rate- limiting step is reduced by 56.53 kJ mo1-1 in gas and 44.84 kJ mol-l in solvent, demonstrating a high catalytic efficiency of CuI.展开更多
基金supported by National Natural Science Foundation of China(Grant No.52072327,62074052,61874159)Zhongyuan Thousand Talents(Zhongyuan Scholars)Program of Henan Province(202101510004)+6 种基金Higher Education and Teaching Reformation Project(2014SJGLX064)Academic Degrees&Graduate Education Reform Project of Henan Province(2021SJGLX060Y)Key research and development projects of Universities in Henan Province(20A140026)the Scientific Research Innovation Team of Xuchang University(2022CXTD008)Science and Technology Project of Henan Province(222102230009).L.Ding thanks the National Key Research and Development Program of China(2022YFB3803300)the open research fund of Songshan Lake Materials Laboratory(2021SLABFK02)the National Natural Science Foundation of China(21961160720).
文摘Lead-free inorganic copper-silver-bismuth-halide materials have attracted more and more attention due to their environmental friendliness,high element abundance,and low cost.Here,we developed a strategy of one-step gas-solid-phase diffusioninduced reaction to fabricate a series of bandgap-tunable Cu_(a)Agm_(1)Bim_(2)I_(n)/CuI bilayer films due to the atomic diffusion effect for the first time.By designing and regulating the sputtered Cu/Ag/Bi metal film thickness,the bandgap of Cu_(a)Agm_(1)Bim_(2)I_(n)/CuI could be reduced from 2.06 to 1.78 eV.Solar cells with the structure of FTO/TiO_(2)/Cu_(a)Agm_(1)Bim_(2)I_(n)/CuI/carbon were constructed,yielding a champion power conversion efficiency of 2.76%,which is the highest reported for this class of materials owing to the bandgap reduction and the peculiar bilayer structure.The current work provides a practical path for developing the next generation of efficient,stable,and environmentally friendly photovoltaic materials.
文摘目的研究SOCS1基因的2个标签单核苷酸多态性位点(tag single nucleotide polymorphisms,Tag SNP)rs243327、rs33932899与凉山彝族人群肺结核发生风险的遗传关联性。方法2015年3月至2016年6月在凉山彝族自治州共采集188例彝族肺结核患者(肺结核组)和229例彝族健康人(健康对照组)全血样本。运用直接测序法对rs243327、rs33932899进行基因分型,应用哈-温平衡检验所选样本的群体代表性,采用卡方检验比较肺结核组和健康对照组之间基因型和等位基因频率分布的差异,评价SOCS1基因SNP与肺结核发生风险的关联性。结果 rs243327、rs33932899在肺结核组和健康对照组中的基因型分布均符合哈-温平衡。在rs243327位点处肺结核组CC基因型频率显著高于健康对照组(CC vs CT:OR=1.611,95%CI=1.058-2.453,P=0.026;CC vs CT+TT:OR=1.651,95%CI=1.107-2.461,P=0.014),提示rs243327位点CC基因型可能增加凉山彝族人群肺结核的发生风险,可能是凉山彝族人群肺结核的易感基因型;C等位基因频率亦显著高于健康对照组(C vs T:OR=1.516,95%CI=1.089-2.109,P=0.013),提示C等位基因可能是凉山彝族人群肺结核的易感等位基因。在rs33932899位点处基因型和等位基因分布在肺结核组和健康对照组之间均无统计学差异(GG vs CG:OR=1.148,95%CI=0.762-1.731,P=0.436;GG vs CC:OR=2.184,95%CI=0.874-5.454,P=0.088;GG/CG+CC:OR=1.229,95%CI=0.875-1.928,P=0.193;G vs C:OR=1.290,95%CI=0.932-1.785,P=0.124),提示rs33932899位点可能与凉山彝族人群肺结核的发生风险无相关性。结论 SOCS1基因单核苷酸多态性可能与凉山彝族人群肺结核的发生发展存在遗传关联。
基金Supported by National Natural Science Foundation of China(20872001)the Natural Science Foundation of Education Administration of Anhui Province(KJ2008A064)
文摘An operationally simple and inexpensive catalyst system was developed for the cross coupling of potassium thiocyanate with aryl iodides by using CuI as catalyst, 1, 10-phenanthroline as ligand, and tetraethylammonium iodide as activator. The procedure is applicable for the synthesis of diverse aryl thiocyanates without any exotic, poisonous reagents.
文摘"Sheng Qing Yi Hao",a new fruit radish F1 hybrid,which was bred from HSR54 A,a self-bred sterile line,and HS1356,an excellent male parent.The flesh of the roots is emerald green,delicate,sweet and crisp.The skin of the roots is little spicy.It takes about 70 d from sowing to maturity.The fleshy roots have a length of 22-27 cm,a diameter of 6-8 cm,and a root weight of 0.8-1.1 kg.The F1 hybrid has stronger resistance to soft rot disease in the field the control group‘Chengyangqing’.It is suitable for cultivation in greenhouse in spring and open field in autumn in north China.
基金Fund for Central Universities (ZXH2009D011)Natural Science Foundation of Tianjin (09JCYBJC04200)+1 种基金National Natural Science Foundation of China Civil Aviation Administration of China (61079010) Scientific Research Foundation of Civil Aviation University of China (2011KYS05)
文摘Using the ligand bis（3-（1H-imidazol-1-yl）-1-phenylpropan-1-one） L, two novel complexes [CuL2（ph））]·H2O 1 and [ZnL2（tp）] 2 （ph = phthalic acid, tp = terephthalic acid） have been synthesized and their crystal structures were determined by single-crystal X-ray diffraction analysis. Crystal data for 1： triclinic, space group P1^-, a = 9.4300（17）, b = 12.148（2）, c = 13.721（2） A, a = 109.620（2）,β = 94.351（2）, y = 94.830（2）°, C32H30N4O7Cu, Mr = 646.14, V= 1466.2（4） A^3, Z = 2, Dc = 1.464 g/cm3, It（MoKa） = 0.801 mm^-1, F（000） = 670, the final R = 0.0337 and wR = 0.0859 for 5122 observed reflections with I 〉 2σ（I）, And those for 2： monoclinic, space group P2/n, a = 7.1866（11）, b = 14.144（2）, c = 14.407（2）/k, β = 101.427（2）°, C32H28N4O6Zn, Mr = 629.95, V = 1435.4（4） A3, Z = 2, Dc = 1.457 g/cm3, μ（MoKa） = 0.908 mm^-1, F（000） = 652, the final R = 0.0438 and wR= 0.0821 for 2546 observed reflections with I〉 2σ（I）. In 1 and 2, ph or tp ligauds bridge the six-coordinated copper（Ⅱ） or four-coordinated zinc（Ⅱ） ions forming 1D zigzag chains while L ligands act as the terminal monodentate ligand. It is noted that weak non-classical C-H…O plays the important and dominating roles in the formation of 2D supramolecular architectures of 1, but in 2 non-classical C-H…O and aromatic π…π Stacking interactions are quite important and play dominant roles in the self-assembly of 2D supramolecular architectures.
文摘The detailed mechanism of CuI-catalyzed C-O intramolecular coupling reaction of 2-（2-bromo-4-fluoro-phenyl）-l- cyclohexen-1-yl trifluoromethane-sulfonate was studied with the density functional theory （DFT）. The geometries of the reactants, transition states, intermediates and products were optimized at the B3LYP/6-31 ＋G＊ level. Meanwhile, the single point energy of species involved in gas and solvent at B3LYP/6-31 I＋G＊ level was individually investigated. Polarizable continuum models （PCM） were applied to the dioxane and water solutions at the same level, respectively. Results show that the rate-limiting step, M3→TS3, does not change in different solutions. However, the activation energy in a dioxane solution is lower than that in water, which explains the previous experimental results. Compared with the non-catalyzed reaction process, the activation energy of the rate- limiting step is reduced by 56.53 kJ mo1-1 in gas and 44.84 kJ mol-l in solvent, demonstrating a high catalytic efficiency of CuI.
