11 research outputs found

    Benzene-Acetylene Combustion Synthesis of Fullerenes and Their Derivatives

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    自1985年C60发现以来,违背“独立五元环”规则(IPR)的富勒烯就引起了科学界的广泛关注。然而,包含相邻五元环的富勒烯本身所具有的高度活泼性造成了其合成、分离与化学修饰上的困难。到目前为止,non-IPR富勒烯主要是通过内嵌和外接的方法来稳定。 这一类non-IPR富勒烯化合物主要是通过石墨电弧放电法合成得到的,但在富勒烯的宏量合成方面,石墨电弧放电法的合成效率远低于火焰燃烧法。后者在合成的可操作性、富勒烯的产量以及可持续性等方面具有前者不能比拟的优势。 本文的工作主要是通过火焰燃烧法合成了一系列富勒烯及其衍生物,分离并明确表征了氢化富勒烯-C60H8,其碳笼包含有一对相邻五元环(碳笼...Fullerenes violating the isolated pentagon rule (IPR) have caught much attention since the discovery of the first buckyball molecule C60. However, the inherent instability of non-IPR fullerenes pertaining to their abutting pentagons poses difficulties in the synthesis, isolation and chemical manipulation of pristine non-IPR fullerenes. Nowadays, non-IPR fullerenes can only be stabilized by endohed...学位:理学硕士院系专业:化学化工学院化学系_无机化学学号:2052007115099

    Response of antioxidase in viscera tissue of Pagrosomus major larvae to water-soluble fraction in No. 0 diesel oil

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    在实验生态条件下 ,研究了不同浓度 0 #柴油的水溶性成分 (watersolublefraction ,WSF)对真鲷幼体内脏组织抗氧化酶活性变化的影响 .结果表明 :不同浓度的WSF污染对抗氧化酶活性变化的影响表现为抛物线型剂量 效应作用形式 ;同一剂量组随着污染时间的延长 ,过氧化物歧化酶 (SOD)活力上升 ,硒谷胱甘肽过氧化物酶 (Se GPx)和过氧化氢酶 (Ca)的活力下降 ;受污染幼体在污染解除之后 ,其抗氧化酶活性得到不同程度的恢复 .Response of antioxidase (superoxide dismutase, SOD; catalase, Ca; sedium\|dependent glutathione peroxidase, Se\|Gpx) in viscera tissues of Pagrosomus Major larvae to water\|soluble fraction in No. 0 diesel oil were tested. Pagrosomus Majoe larvae were exposed to the solutions with the conc. at 0.017, 1.22, 8.82?mg(No.0 diesel oil)/L for 15 days. The results showed that the activity of antioxidase was statistically significant dose\|related effect in different WSF concentrations. Under same dosed\|concentration exposure, significant increases in SOD activity and decreases of Ca and Se\|Gpx activity were observed with the prolonged exposure time. The activity of antioxidase returned to corresponding control level after the recovery experiment.国家自然科学基金!资助项目 (项目批准号 :2 96 770 14) ;; 福建省自然科学基金!资助项目 (C9810 0 3

    鲨鱼肝铁蛋白理化特性及其储存有机磷农药分子的初步研究

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    从紫外可见光谱和电子显微结构两方面比较研究鲨鱼肝铁蛋白(SLF)、脱铁核铁蛋白(apoSLF)以及储存有机磷农药分子的铁蛋白(SLFop)的理化特性.结合不同程度脱铁核铁蛋白储存有机磷能力的差别及其动力学规律,推断有机磷分子的储存位点位于铁核表层,其储存能力受控于含高磷铁比的铁核表层结构和储存有机磷的场所,并与介质中有机磷分子浓度有关.研究结果为构建铁蛋白生物反应器应用于水体监测奠定基础

    鲨鱼肝铁蛋白理化特性及其储存有机磷农药分子的初步研究

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    从紫外可见光谱和电子显微结构两方面比较研究鲨鱼肝铁蛋白(SLF)、脱铁核铁蛋白(apoSLF)以及储存有机磷农药分子的铁蛋白(SLFop)的理化特性.结合不同程度脱铁核铁蛋白储存有机磷能力的差别及其动力学规律,推断有机磷分子的储存位点位于铁核表层,其储存能力受控于含高磷铁比的铁核表层结构和储存有机磷的场所,并与介质中有机磷分子浓度有关.研究结果为构建铁蛋白生物反应器应用于水体监测奠定基础

    Separation and Characterization of C70(C14H10) and C70(C5H6) from an

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    通讯作者地址: Xie, SY (通讯作者), Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 2. Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, Xiamen 361005, Peoples R China 3. Xiamen Univ, Fujian Prov Key Lab Theoret & Computat Chem, Xiamen 361005, Peoples R China 4. Xiamen Univ, Sch Life Sci, Xiamen 361005, Peoples R China 电子邮件地址: [email protected], [email protected] derivatives of fullerenes are prevalent in the fullerene-producing flame, the chemistry of these derivatives has rarely been discussed in the previous literature. In this paper, two D-Sh-C-70 derivatives, C-70(C14H10) and C-70(C5H6), were isolated from the soot of an acetylene benzene combustion. On the basis of detailed MS, NMR, IR, and UV/vis analyses in combination with DFT calculations, the cycloadduct structures of C-70(C14H10) and C-20(C5H6) were identified. Both the anthracene (C14H10) and the cyclopentadiene (C5H6) adducts, supposed as the intermediate species produced during the combustion process, were characterized to bond at a [6,6] ring junction at the end of the olivary C-70 cage. The present work exemplifies the capture of possible intermediates by the C-70 fullerene from the flame and thus provides insight into the mechanism responsible for the formation of fullerene-containing soot.NSFC21031004 20973137 21021061 973 projects 2007CB815301 2007CB81530

    Separation and Characterization of C70(C14H10) and C70(C5H6) from an Acetylene–Benzene–Oxygen Flame

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    [email protected], [email protected] derivatives of fullerenes are prevalent in the fullerene-producing flame, the chemistry of these derivatives has rarely been discussed in the previous literature. In this paper, two D(Sh)-C(70) derivatives, C(70)(C(14)H(10)) and C(70)(C(5)H(6)), were isolated from the soot of an acetylene benzene combustion. On the basis of detailed MS, NMR, IR, and UV/vis analyses in combination with DFT calculations, the cycloadduct structures of C(70)(C(14)H(10)) and C(20)(C(5)H(6)) were identified. Both the anthracene (C(14)H(10)) and the cyclopentadiene (C(5)H(6)) adducts, supposed as the intermediate species produced during the combustion process, were characterized to bond at a [6,6] ring junction at the end of the olivary C(70) cage. The present work exemplifies the capture of possible intermediates by the C(70) fullerene from the flame and thus provides insight into the mechanism responsible for the formation of fullerene-containing soot.NSFC 21031004 ,20973137,21021061 973 projects 2007CB815301 ,2007CB81530

    Simple Combustion Production and Characterization of Octahydro[60]fullerene with a Non-IPR C-60 Cage

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    1. Xiamen Univ, State Key Lab Phys Chem Solid Surface, Xiamen 361005, Peoples R China 2. Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China 3. Xiamen Univ, Sch Life Sci, Xiamen 361005, Peoples R ChinaFor the first time an easier, operable combustion method is employed for the synthesis of non-IPR fullerene, and an octahydro[60)fullerene with a non-IPA C-60 cage (C-60 isomer C-#1809(60)) produced by combustion is isolated and characterized by MS, UV vis, IR, and NMR spectroscopies in combination with DFT calculations. This finding shows that, in addition to chlorine, hydrogen can be an ample cataloreactant for the production of non-IPR fullerene derivatives under such conditions as arc-burning and diffusion combustion.NSFC 20525103 20673088 20973137 20721001 20423002 21031004 973 projects 2007CB815301 2007CB81530

    Combustion Synthesis and Electrochemical Properties of the Small Hydrofullerene C50H10

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    通讯作者地址: Xie, SY (通讯作者),Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 2. Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, Xiamen 361005, Peoples R China 3. Xiamen Univ, Sch Life Sci, Xiamen 361005, Peoples R China 电子邮件地址: [email protected]; [email protected] hydrofullerene C50H10 is synthesized by low-pressure benzeneoxygen diffusion combustion. The structure of C50H10 is identified through NMR, mass spectrometry, and IR and Raman spectroscopy as a D5h symmetric closed-cage molecule with five pairs of fused pentagons stabilized by ten hydrogen atoms. UV/Vis and fluorescence spectrometric analyses disclose its optical properties as comparable with those of its chloride cousin (C50Cl10). Cyclic and square-wave voltammograms reveal that the first reduction potential of C50H10 is more negative than that of C50Cl10 as well as C60, with implications for the utilization of C50H10 as a promising electron acceptor for photovoltaic applications.973 projects 2011CB935901 NSFC 21031004 21021061 2077310

    Construction of the Nature Reserve for Horseshoe Crab,Tachypleus tridentatus Leach in Xiamen

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    结合厦门海域和中国鲎生物学的特点,对厦门海域中国鲎保护区的建设进行科学规划,并初步探讨保护区的管理模式,欲通过制定相应法规,开展科研与监测,加强宣传教育,广泛进行国际合作,应用科学的管理方式来保障保护区的持续发展,使中国鲎资源得到有效地保护和利用.Based on the biological characteristics of T.tridentatus and the inshore features of Xiamen coast,this paper aims to explain the scientific planning for constructing the nature reserve for horseshoe crab in Xiamen,and further discusses its management pattern.Sustainable development and exploitation of the nature reserve of horseshoe crab require relevant policies and regulations,scientific investigation and public education,and cooperation with international organizations as well.福建省高校水产科学技术与食品安全重点实验室开放基金资助项目(2007J203

    线粒体COⅠ和16S rRNA片段确定近江蛏和缢蛏属的分类地位

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    对5种双壳类软体动物(近江蛏Sinonovacula rivularis、缢蛏Sinonovacula constricta、小刀蛏Cultellusattenuatus、尖刀蛏Cultellus scalprum和大竹蛏Solen grandis)的线粒体基因COⅠ和16S rRNA部分序列进行测序和分析,并结合GenBank中其他竹蛏超科和樱蛤超科物种COⅠ和16S rRNA片段,计算种间遗传距离,构建系统发育树,探讨近江蛏及缢蛏属的分类地位。结果表明,5个物种COⅠ和16S rRNA片段A+T含量均远高于G+C含量,近江蛏与缢蛏之间的碱基序列差异和遗传距离均已达到种间差异水平,确定近江蛏为缢蛏属的一个种。分别构建COⅠ(砂海螂为外群)和16S rRNA片段(密鳞牡蛎为外群)的Neighbor-Joining系统树,两者的拓扑结构都明确显示,缢蛏属为灯塔蛤科一个属,灯塔蛤科录属于竹蛏超科,而不录属于樱蛤超科
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