A novel cobalt(Ⅱ) coordination polymer, [Co(tdc)(bpmp)(H2O)]n(1), was hydrothermally synthesized using 2,5-thiophenedicarboxylate(tdc) and bis(4-pyridylmethyl)piperazine(bpmp) ligand as the organic li...A novel cobalt(Ⅱ) coordination polymer, [Co(tdc)(bpmp)(H2O)]n(1), was hydrothermally synthesized using 2,5-thiophenedicarboxylate(tdc) and bis(4-pyridylmethyl)piperazine(bpmp) ligand as the organic linkers. X-ray single-crystal diffraction determination reveals that 1 crystallizes in the monoclinic Cc space group, with a = 18.836(2), b = 5.9540(7), c = 20.414(2) A, β = 97.4300(10)°, V = 2270.1(5) A3, Z = 4, Mr = 515.44, Dc = 1.508 Mg/m^3, μ = 0.890 mm-1, F(000) = 1068, the final R = 0.0263 and w R = 0.0665 for 3714 observed reflections with I 2σ(I). In compound 1, the Co(Ⅱ) ions are connected by tdc2- anions to form a 1D double chain, and such chains are further linked by bpmp ligands to form a three-dimensional(3D) structure. Topologically, the structure of 1 represents a uninodal 3D dia(6^6) topology. What's more, powder X-ray diffraction patterns and photocatalytic property for 1 have also been investigated.展开更多
[目的]3-(3′,4′-次甲二氧苯基)-N-正丙基丙烯酰胺是具有广谱抑菌活性的化合物,将其研制成优良环保剂型悬浮剂,可为实现田间应用提供技术依据。[方法]采用湿法研磨制备了12种不同配方的悬浮剂,通过质量指标检测确定最佳配方,测定其表...[目的]3-(3′,4′-次甲二氧苯基)-N-正丙基丙烯酰胺是具有广谱抑菌活性的化合物,将其研制成优良环保剂型悬浮剂,可为实现田间应用提供技术依据。[方法]采用湿法研磨制备了12种不同配方的悬浮剂,通过质量指标检测确定最佳配方,测定其表面张力及其在黄瓜叶面的动态接触角,并开展了防治黄瓜白粉病田间药效试验。[结果]最佳配方为3-(3′,4′-次甲二氧苯基)-N-正丙基丙烯酰胺40%(折百)、S043%、D4252%、W071%、乙二醇3%、硅酸镁铝0.4%、黄原胶0.12%、B150.12%、消泡剂X600.3%、水补足。此悬浮剂在有效成分0.27 g a.i./L时的表面张力以及在黄瓜叶面的动态接触角均小于对照药剂40%苯醚甲环唑SC,表明其具有良好的润湿性能。在有效成分0.27 g a.i./L下的防效为88.38%,与对照药剂25%嘧菌酯SC 0.20 g a.i./L相当,且对黄瓜安全。[结论]制备悬浮剂为类白色均匀悬浮液,流动性好,粒径合格,悬浮率稳定在98.5%左右,pH为4.09,黏度为452 mPa·s,入水分散性合格,热储、低温及冻融稳定性良好,未出现沉淀,各项指标均达标,对黄瓜白粉病防效优良,具有良好的开发应用前景。展开更多
基金supported by the Natural Science Foundation of Henan Province(132300410326)
文摘A novel cobalt(Ⅱ) coordination polymer, [Co(tdc)(bpmp)(H2O)]n(1), was hydrothermally synthesized using 2,5-thiophenedicarboxylate(tdc) and bis(4-pyridylmethyl)piperazine(bpmp) ligand as the organic linkers. X-ray single-crystal diffraction determination reveals that 1 crystallizes in the monoclinic Cc space group, with a = 18.836(2), b = 5.9540(7), c = 20.414(2) A, β = 97.4300(10)°, V = 2270.1(5) A3, Z = 4, Mr = 515.44, Dc = 1.508 Mg/m^3, μ = 0.890 mm-1, F(000) = 1068, the final R = 0.0263 and w R = 0.0665 for 3714 observed reflections with I 2σ(I). In compound 1, the Co(Ⅱ) ions are connected by tdc2- anions to form a 1D double chain, and such chains are further linked by bpmp ligands to form a three-dimensional(3D) structure. Topologically, the structure of 1 represents a uninodal 3D dia(6^6) topology. What's more, powder X-ray diffraction patterns and photocatalytic property for 1 have also been investigated.
文摘[目的]3-(3′,4′-次甲二氧苯基)-N-正丙基丙烯酰胺是具有广谱抑菌活性的化合物,将其研制成优良环保剂型悬浮剂,可为实现田间应用提供技术依据。[方法]采用湿法研磨制备了12种不同配方的悬浮剂,通过质量指标检测确定最佳配方,测定其表面张力及其在黄瓜叶面的动态接触角,并开展了防治黄瓜白粉病田间药效试验。[结果]最佳配方为3-(3′,4′-次甲二氧苯基)-N-正丙基丙烯酰胺40%(折百)、S043%、D4252%、W071%、乙二醇3%、硅酸镁铝0.4%、黄原胶0.12%、B150.12%、消泡剂X600.3%、水补足。此悬浮剂在有效成分0.27 g a.i./L时的表面张力以及在黄瓜叶面的动态接触角均小于对照药剂40%苯醚甲环唑SC,表明其具有良好的润湿性能。在有效成分0.27 g a.i./L下的防效为88.38%,与对照药剂25%嘧菌酯SC 0.20 g a.i./L相当,且对黄瓜安全。[结论]制备悬浮剂为类白色均匀悬浮液,流动性好,粒径合格,悬浮率稳定在98.5%左右,pH为4.09,黏度为452 mPa·s,入水分散性合格,热储、低温及冻融稳定性良好,未出现沉淀,各项指标均达标,对黄瓜白粉病防效优良,具有良好的开发应用前景。
文摘目的:观察葛根芩连汤辅助0.1%糠酸莫米松乳膏及盐酸西替利嗪片治疗特应性皮炎(Atopic dermatitis,AD)患者的临床疗效以及血清中神经生长因子(Nerve growth factor,NGF)和神经营养因子4(Neurotrophin-4,NT-4)水平的影响。方法:选取2021年5月-2023年5月收入笔者医院的AD患者60例,根据治疗方案的差异随机分为对照组(西药治疗)、观察组(西药治疗+中药辅助治疗)每组30例。对照组采用外用糠酸莫米松乳膏,口服盐酸西替利嗪进行干预治疗,观察组在对照组基础上采用葛根芩连汤辅助进行治疗。观察两组患者治疗前、后血清中NGF、NT-4水平、瘙痒视觉模拟评分(Visual analogue scale,VAS)、湿疹面积及严重指数(Eczema area and severity index,EASI)评分,治疗后临床疗效及不良反应发生率。结果:治疗前两组患者血清中NGF、NT-4水平、VAS评分、EASI评分相比差异无统计学意义(P>0.05),经治疗后两组患者血清中NGF、NT-4水平、VAS评分、EASI评分均较同组治疗前显著降低(P<0.05),且观察组优于对照组(P<0.05);经治疗后,观察组患者临床疗效总有效率高于对照组,不良反应发生率低于对照组(P<0.05)。结论:葛根芩连汤辅助西药治疗AD可下调患者血清中NGF、NT-4水平,减轻瘙痒症状及皮损程度,改善临床症状,降低不良事件的发生率,值得临床推广应用。