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环保增塑剂三甘醇二异辛酸酯的合成新工艺研究

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精细与专用化学品 2024年第7期32卷 48-50,60页

作者：张兴福开封市瑞泓化工有限公司河南开封475000

研究了以异辛酸和三甘醇为原料、钛酸四丁酯为催化剂合成三甘醇二异辛酸酯的最佳工艺,探讨了催化剂用量、反应温度、反应时间以及醇酸物质的量等因素对产品纯度的影响。结果表明:在n(三甘醇)∶n(异辛酸)为1∶2.5、催化剂用量为三甘醇和... 详细信息

研究了以异辛酸和三甘醇为原料、钛酸四丁酯为催化剂合成三甘醇二异辛酸酯的最佳工艺,探讨了催化剂用量、反应温度、反应时间以及醇酸物质的量等因素对产品纯度的影响。结果表明:在n(三甘醇)∶n(异辛酸)为1∶2.5、催化剂用量为三甘醇和异辛酸总质量的0.2%、反应温度为220℃、反应时间为6h、甲苯用量为三甘醇和异辛酸总质量40%的条件下,三甘醇二异辛酸酯的纯度可达到98.00%(气相色谱法)。

关键词：三甘醇二异辛酸酯合成钛酸四丁酯

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碳点在潜在指纹显影中的应用进展

化学研究与应用 2024年第2期36卷 225-234页

作者：李大武张幸福张晓彤李展超痕迹检验鉴定技术公安部重点实验室(中国刑事警察学院刑事科学技术学院) 辽宁沈阳110854 辽宁石油化工大学石油化工学院辽宁抚顺113001 沈阳职业技术学院辽宁沈阳110045

碳点(CDs)是一种尺寸在10 nm以下的新型纳米材料,由于其独特的发光性能、低毒和环保等特点,在潜指纹检测中展现出了巨大的应用潜力。在潜指纹检测中,碳点的荧光特性可以帮助提高潜指纹的成像和识别能力。本文综述了碳点的合成方法、发... 详细信息

碳点(CDs)是一种尺寸在10 nm以下的新型纳米材料,由于其独特的发光性能、低毒和环保等特点,在潜指纹检测中展现出了巨大的应用潜力。在潜指纹检测中,碳点的荧光特性可以帮助提高潜指纹的成像和识别能力。本文综述了碳点的合成方法、发光机理及其在潜指纹检测中的应用。通过合成方法优选、元素掺杂、前驱体调控、表面改性等手段可以调控碳点的荧光发射波长;再将碳点纳米粒子均匀分散在天然或常规材料上,所获得的碳点纳米复合材料可以避免因碳点纳米粒子聚集而引发的荧光淬灭现象,保留碳点的荧光性能,并且更适用于潜在指纹显现的常规操作。本文展望了在潜在指纹显影研究中碳点的未来发展方向,通过不断的改进和创新,期许为刑事科学技术领域的研究工作提供重要参考。

关键词：潜在指纹碳点荧光

Syntheses, Crystal Structures and Biological Activity of the Diorganotin 2-(2-(4-Methoxybenzoyl)hydrazono)-3-phenylpropanoic Carboxylate Complexes

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Chinese Journal of Structural Chemistry 2020年第11期39卷 1965-1972页

作者： WANG Man YU Fei JIANG Wu-Jiu TAN Yu-xing zhang fu-xing KUANG Dai-Zhi Key Laboratory of functional Metal-organic Compounds of Hunan Province Key Laboratory of Functional Organometallic MaterialsUniversity of Hunan ProvinceCollege of Chemistry and Materials ScienceHengyang Normal UniversityHengyangHunan 421008China

Diorganotin 2-(2-(4-methoxybenzoyl)hydrazono)-3-phenylpropanoic carboxylate complexes Ⅰ{[p-CH3 O-C6 H4 O(O)C=N-N=C(Ph CH2)COO](n-Bu)2 Sn(CH3 OH)}2 and Ⅱ {[p-CH3 O-C6 H4 O(O)C=NN=C(Ph CH2)COO](Ph CH2)2 Sn(CH3 OH)}2 have been synthesized. The complexes have been characterized by IR, 1 H, 13 C and 119 Sn NMR spectra, HRMS, elemental analysis, thermal stability analysis and the crystal structures have been determined by X-ray diffraction. The crystal of complex I belongs to triclinic system, space group P1 with a = 10.437(2), b = 11.576(3), c = 13.085(3) ?, α = 66.272(2)°, β = 86.920(3)°, γ = 73.367(3)°, Z = 2, V = 1383.3(5) ?3, Dc = 1.381 Mg·m-3, m(Mo Kα) = 0.959 mm-1, F(000) = 592, R = 0.0233 and w R = 0.0644. The crystal of complex Ⅱ is of triclinic system, space group P1 with a = 10.446(1), b = 11.720(1), c = 13.063(2) ?, α = 84.190(1)°, β = 71.610(1)°, γ = 72.624(1)°, Z = 1, V = 1448.3(3) ?3, Dc = 1.475 Mg·m-3, m(Mo Kα) = 0.925 mm-1, F(000) = 656, R = 0.0169 and w R = 0.0432. In vitro antitumor activities of both complexes were evaluated by MTT against three human cancer cell lines(NCI-H460, Hep G2 and MCF7), and two complexes exhibited good antitumor activity. The interaction between complex Ⅰ and calf thymus DNA were studied by UV-vis and fluorescence spectroscopy, the interaction of complex Ⅰ with calf thymus DNA were intercalation.

关键词： diorganotin carboxylate synthesis crystal structure biological activity

Syntheses, Structures and Herbicidal Activity of Bis(5-R-2-hydroxybenzylidene) Thiocarbohydrazide Monobutyltin Complexes [R: H(T1), Me(T2)]

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Chinese Journal of Structural Chemistry 2019年第5期38卷 719-726,668页

作者： FENG Yong-Lan zhang fu-xing KUANG Dai-Zhi Key Laboratory of functional Metal-organic Compounds of Hunan Province Key Laboratory of Functional Organometallic Materials of College of Hunan Province Department of Chemistry and Material Science Hengyang Normal University

The 1,5-disubstituted thiocarbohydrazide ligands were prepared by the condensation of thiocarbohydrazide with salicylaldehyde and 5-methylsalicylaldehyde, respectively. The butyltin complexes,[(5-R-2-hydroxy)ArCH=NNH]2 CS(n-BuSnCl)2, R = H(T1);R = Me(T2), based on the1,5-disubstituted thiocarbohydrazide were obtained by microwave-assisted solvothermal reaction of n-butyltintrichloride precursor with the ligands in methanol environments, which have been structurally characterized by elemental analysis, IR and(1 H, 13 C) NMR spectra. The crystals belong to monoclinic system, space groups C2/c(T1) and Pc(T2), respectively. The Sn atom is six-coordinated with distorted octahedral geometry by O, N and S atoms from ligand, C atom of butyl and two Cl atoms. In the crystal, complex T1 forms three-dimensional supramolecular assembly mediated by noncovalent interactions such as C–H···Cl and π-stacking ***, T2 forms an interesting two-dimensional supramolecular structure by noncovalent interactions(e.g. C–H×××Cl and N–H×××Cl) of one-dimensional band-like chain. These ligands and its butyltin complexes have growth effect on the target plants, such as Portulaca oleracea L.,Amaranthus spinosus L., Cassia tora L., Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee and Amaranthus tricolor L. The ligand L1 has a good inhibitory effect on the growth of Cassia tora L., and complex T2 has selective inhibition on the growth of Portulaca oleracea L. and Amaranthus tricolor L., which can be used as a candidate compound for Cassia tora L., Portulaca oleracea *** Amaranthus tricolor L. herbicide.

关键词： bis(2-hydroxybenzylidene)thiocarbohydrazide butyltin microwave solvothermal synthesis crystal structure herbicidal activity

Study of Mechanisms of CO and NO2O xidation on Zn–CNT(6,0) and Zn–BNNT(6,0),Mn–B38N38 and Mn–C76

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Chinese Journal of Structural Chemistry 2020年第1期39卷 41-47,2页

作者： ZENG Zhi-Wen LI Xiang zhang fu-xing NAJAFI Meysam Department of Basic Courses Hunan Polytechnic of Environment and BiologyHengyang 421005China Department of Medical and Technical Hunan Polytechnic of Environment and BiologyHengyang 421005China Department of Chemistry and Material Science Hengyang Normal UniversityHengyang 421008China Medical Biology Research Center Health Technology InstituteKermanshah University of Medical SciencesKermanshah 67149-67346Iran

The abilities and performances of Mn–C76,Mn–B38N38,Zn–CNT(6,0)and Zn–BNNT(6,0)to the oxidation of NO2 and CO are *** oxidation reactions of NO2 and CO through the Langmuir-Hinshelwood(LH)and Eley-Rideal(ER)mechanisms by theoretical methods are *** most stable intermediates of oxidation reactions of NO2 and CO on Mn–C76,Mn–B38N38,Zn–CNT(6,0)and Zn–BNNT(6,0)are obtained from thermodynamics view *** the LH pathway,Mn–C76,Mn–B38N38,Zn–CNT(6,0)and Zn–BNNT(6,0)catalysts are deactivated via the second NO2 and CO *** the ER pathway,the second NO3 and CO2 molecules are ***,the Mn–C76,Mn–B38N38,Zn–CNT(6,0)and Zn–BNNT(6,0)are proposed to oxidize NO2 and CO molecules with high performances at room temperature.

关键词： NO2 CO2 catalyst mechanism nano Mn and Zn

Syntheses, Crystal Structures and in vitro Anticancer Activities of Dibenzyltin Compounds Based on the N-(2-Phenylacetic acid)-aroyl Hydrazone

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Chinese Journal of Structural Chemistry 2020年第4期39卷 673-681页

作者： JIANG Wu-Jiu MO Tian-Zi zhang fu-xing KUANG Dai-Zhi TAN Yu-xing Key Laboratory of functional Metal-organic Compounds of Hunan Province Key Laboratory of Functional Organometallic MaterialsUniversity of Hunan ProvinceCollege of Chemistry and Materials ScienceHengyang Normal UniversityHengyangHunan 421008China

Two dibenzyltin compounds,{[C6H5O(O)C=N-N=C(Ph)COO](m-Cl-C6H4CH2)2-Sn(CH3OH)}2(1)and{[p-Me-C6H4O(O)C=N-N=C(Ph)COO](m-Cl-C6H4CH2)2Sn(CH3OH)}2(2),have been synthesized by microwave“one pot”reaction with benzoylhydrazine(or p-methyl benzhydrazine),phenylglyoxylic acid and di-m-chlorobenzyltin *** 2 contains two crystals 2a and *** compounds have been characterized with IR,elemental analysis,1H,13C and 119Sn NMR spectra,H *** crystals are all binuclear molecules with a Sn2O2 four-membered ring plane,and each Sn atom center is seven-coordinated with[SnO4C2N]to form a distorted pentagonal bipyramidal *** vitro antitumor activities of all compounds and carboplatin were evaluated by MTT against three human cancer cells such as NCI-H460(lung cancer cells),HepG2(liver cancer cells)and MCF7(breast cancer cells),and compound 2 exhibited better antitumor activity.

关键词： organotin complex hydrazine synthesis crystal structure biological activity

Microwave irradiation-induced alterations in physicochemical properties and methane adsorption capability of coals:An experimental study using carbon molecular sieve

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Chinese Journal of Chemical Engineering 2024年第4期68卷 165-180页

作者： Xuexiang fu xing Tang Yi Xu Xintao Zhou Dengfeng zhang Faculty of Chemical Engineering Kunming University of Science and TechnologyKunming 650500China

In order to comprehend the applicability of microwave irradiation for recovering coalbed methane,it is necessary to evaluate the microwave irradiation-induced alterations in coals with varying levels of *** this work,the carbon molecular sieve combined with KMnO_(4)oxidation was selected to fabricate carbon molecular sieve with diverse oxidation degrees,which can serve as model substances toward ***,the microwave irradiation dependences of pores,functional groups,and highpressure methane adsorption characteristics of model substances were *** results indicated that microwave irradiation causes rearrangement of oxygen-containing functional groups,which could block the micropores with a size of 0.40-0.60 nm in carbon molecular sieve;meanwhile,naphthalene and phenanthrene generated by macro-molecular structure pyrolysis due to microwave irradiation could block the micropores with a size of 0.70-0.90 *** alterations in micropore structure weaken the saturated methane adsorption capacity of oxidized carbon molecular sieve by 2.91%-23.28%,suggesting that microwave irradiation could promote methane ***,the increased mesopores found for oxidized carbon molecular sieve after microwave irradiation could benefit CH4 *** summary,the oxidized carbon molecular sieve can act as model substances toward coals with different ***,microwave irradiation is a promising technology to enhance coalbed methane recovery.

关键词： Microwave irradiation Physicochemical property Coal matrix Adsorption Carbon molecular sieve

健脾养肺汤治疗肺脾两虚型卒中相关性肺炎临床观察

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山西中医 2024年第1期40卷 19-21页

作者：杜丰洪峰张幸福周璇周大勇张安雅安徽中医药大学合肥230000 安徽中医药大学第一附属医院

目的:观察健脾养肺汤治疗肺脾两虚型卒中相关性肺炎的临床疗效。方法:选取肺脾两虚型卒中相关性肺炎患者共60例,随机分为两组各30例。两组均予西医常规治疗,治疗组另予健脾养肺汤治疗。分别观察两组治疗前及治疗后第7天、第14天的感染... 详细信息

目的:观察健脾养肺汤治疗肺脾两虚型卒中相关性肺炎的临床疗效。方法:选取肺脾两虚型卒中相关性肺炎患者共60例,随机分为两组各30例。两组均予西医常规治疗,治疗组另予健脾养肺汤治疗。分别观察两组治疗前及治疗后第7天、第14天的感染指标、氧合指数、临床肺部感染评分(CPIS)、肺部超声评分(LUS)。结果:治疗后,两组感染指标水平、CPIS评分、LUS评分均较治疗前降低(P<0.05),且治疗组优于对照组(P<0.05);两组氧合指数水平均较治疗前升高(P<0.05),且治疗组优于对照组(P<0.05)。结论:健脾养肺汤结合西医常规治疗治疗肺脾两虚型卒中相关性肺炎,可改善患者的临床症状,降低炎症指标水平,改善肺部感染情况,增加机体氧供,提高临床疗效。

关键词：卒中相关性肺炎健脾养肺汤中医药疗法

Synthesis and Crystal Structure of the Ladder-like Organotin Complex: μ-pentaoxygen bridged penta(bis-benzyltin) bis-salicylate

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Chinese Journal of Structural Chemistry 2005年第12期24卷 1387-1392页

作者： WANG Jian-Qiu CHEN Zhi-Min ZENG Rong-Ying KUANG Dai-Zhi FENG Yong-Lan zhang fu-xing Department of Chemistry and Material Science Hengyang Normal University Hengyang 421008 China

A novel organotin complex of μ-pentaoxygen bridged penta（bis-benzyltin） bissalicylate has been synthesized by the reaction of bis-benzyltin oxide and salicylic acid and its structure has been determined by X-ray diffraction. The crystal belongs to monoclinic, space group P21/n with a = 1.7206（5）, b = 2.1401（6）, c = 2.1488（6）nm, β= 93.325（5）°, V = 7.899（4） nm^3, Z = 4, Dc = 1.564 g/cm^3,μ（MoKα） = 16.17cm^-1, Mr = 1859.94, F（000） = 3692, R1= 0.0755 and wR2= 0.1557. According to structural analysis, the coordination geometry of tin is a distorted trigonal bipyramid, and the ladder-like structure is shaped by four Sn2O2 planar four-membered rings.

关键词： μ-pentaoxygen bridged penta(bis-benzyltin) bis-salicylate synthesis crystal structure