新型尾式5-(4-烟酸酰氧基己氧基)苯基-5,10,15-三苯基卟啉及其配合物的合成、表征和电化学性能

合成了新型尾式5-(4-烟酸酰氧基己氧基)苯基-5,10,15-三苯基卟啉及其Mn, Fe, Co, Ni, Cu, Zn配合物, 并用红外光谱、紫外-可见光谱、核磁共振氢谱、元素分析和质谱对化合物的结构进行了确认, 通过循环伏安法研究了化合物的电化学性质. 结果表明, 卟啉配体与其配合物的紫外光谱、红外光谱和核磁共振氢谱都有很大区别, 锰与铁配合物的循环伏安曲线和配体及镍、铜、锌的配合物不同, 除了卟啉环发生氧化还原反应外, 还发生了金属离子的氧化还原反应.     

钒氧卟啉化合物的氧化还原电位

１引言 氧化还原电位是金属卟啉化合物的重要性质。一方面它们是合成产物与天然化合物特征对比的重要参数,可以用来判断这些产物或化合物传递氧的能力,另一方面可以通过这类化合物氧化还原反应的可过程度,总结有机化合物氧化还原反应的选择性和方向性。 钒氧四苯基叶琳（ＶＯ－ＴＰＰ）、钒氧四对氯苯基ＵＦ琳（ＶＯ－ＴＣＩＰＰ）和钒氧四吡啶基卟啉（ＶＯ－ＴＰｙＰＰ）的氧化还原电位迄今未见详细报道。本实验利用循环伏安法得到的半波电位,试图判断它们电极反应的可逆性。２实验部分２．１仪器和试剂ＸＪＰ－８２１（Ｂ）ＡＤ３新极…     

杯芳烃-卟啉化合物的合成及性质

杯芳烃和卟啉通过共价键连结或者分子间作用力聚集形成的杯芳烃-卟啉化合物在分子识别、分子催化、分子自组装等方面有潜在的用途. 本工作综述了杯芳烃-卟啉化合物的合成及性质.     

烟酸的电化学行为与测定

用循环伏安法研究了不同支持电解质溶液中烟酸的电化学行为。烟酸在玻碳电极表面有良好的电化学响应信号。在碱性介质中,烟酸被不可逆氧化,氧化产物具有电活性,可发生准可逆氧化还原反应;在酸性介质中,烟酸发生两步准可逆氧化还原反应。结合红外、紫外光谱分析,提出了烟酸在不同酸度的介质中的电化学反应历程。并根据－０．１３Ｖ处的氧化峰电流与烟酸浓度的关系,提出了电化学测定烟酸的新方法     

卟啉-salen化合物的合成及谱学性质研究

合成了三种含羟基的salen化合物: salen-OH, Cl-salen-OH和t-Bu-salen-OH, 并用后两种羟基salen与5,10,15-三苯基-20-对羟基苯基卟啉(HPTPP)以烷烃链[O(CH)₆O及O(CH)₁₀O]相连合成四种卟啉-salen化合物: HPSC₆ (1), HPSC₁₀ (2), HPt-BuSC₆ (3), HPt-BuSC₁₀ (4)及其金属锌(II)化合物: ZnPSC₆ (Zn-1), ZnPSC₁₀ (Zn-2), ZnPt-BuSC₆ (Zn-3), ZnPt-BuSC₁₀ (Zn-4). 用元素分析、核磁共振、红外光谱、紫外-可见光谱等手段对其组成的结构进行表征, 并对其谱学性质进行了研究.     

新型桥连双卟啉化合物的合成及结构表征

通过将4,4′-二羧基-2,2′-联吡啶、2,6-二溴甲基吡啶、2,6-二羟甲基吡啶和1,8-二氨基萘分别与5-(4-羟基苯基)-10,15,20-三苯基卟啉(1a)、5-(4-甲酰苯基)-10,15,20-三苯基卟啉(1b)和5-[4-(4′-溴代丁氧基)苯基]-10,15,20-三苯基卟啉(1c)反应,合成了3类新型的双卟啉化合物2a-2e,经IR,¹HNMR,MS,UV-Vis光谱及元素分析对中间体和目标化合物的结构进行了表征.     

共价键连卟啉-富勒烯化合物的合成与表征

The covalently linked porphyrin-fullerene dyads were synthesized. The ligand 5-[4′-(4″-Phenoxybutoxy)phenyl]-N-(2-methyl)fulleropyrrolidine-10,15,20-tri-(p-methoxyphenyl)porphyrin (H₂P-C₆₀) was synthesized by 1,3 dipolar cycloaddition reaction with C₆₀, sarcosine and H₂P-CHO. The zinc porphyrin-fullerene was prepared by metalation of H₂P-C₆₀ and zinc acetate. The compounds were characterized by meams of IR, UV-Vis, ESI-MS, elemental analysis, and ¹H NMR.     

钒-卟啉的电化学行为研究

用多种电化学方法对H_2TPP及TPP-VO络合物进行了电氧化还原行为及动力学研究,提出了其电极反应机理,用微电极技术测定了其各步电极反应的动力学参数,并对实验中发现的现象用分子杂化轨道理论进行了解释.     

二茂铁取代卟啉的合成表征及电化学性质

通过吡咯与二茂铁甲醛和对甲基苯甲醛的直接交叉缩合反应,合成并成功分离了6个含有0~4个二茂铁取代基的卟啉化合物:5,10,15,20-四(4-甲苯基)卟啉[(CH3Ph)4PH2]、5-(二茂铁基)-10,15,20-三(4-甲苯基)卟啉[Fc(CH3Ph)3PH2]、cis-5,10-二(二茂铁基)-15,20-二(4-甲苯基)卟啉[cis-Fc2(CH3Ph)2PH2]、trans-5,15-二(二茂铁基)-10,20-二(4-甲苯基)卟啉[trans-Fc2(CH3Ph)2PH2]、5,10,15-三(二茂铁基)-20-(4-甲苯基)卟啉[Fc3(CH3Ph)PH2]、5,10,15,20-四(二茂铁基)卟啉[Fc4PH2]。用紫外-可见和红外光谱、核磁共振及质谱等技术对卟啉化合物进行了表征,用微量光谱滴定法测定了化合物在非水溶剂中的质子化反应常数,研究了它们的电化学和光谱电化学性质。结果表明,二茂铁取代基对化合物的光谱及氧化还原电位有较大的影响。     

新型吡啶卟啉-5-氟尿嘧啶化合物的合成

新型吡啶卟啉-5-氟尿嘧啶化合物的合成;吡啶卟啉; 氟尿嘧啶; 合成     

Studies on the Electrochemical Properties of Amphiphilic Ferrocenylimines Compounds

A series of amphiphilic ferrocenylimine compounds (four amphiphilic ferrocenylimines and four corresponding palladium complexes) were synthesized and their electrochemical characters were also investigated in detail. The results revealed that the redox of ferrocene derivatives was assumed by the ferrocene group and affected by substituent groups. Some effect rules were discovered and are described here. Moreover, the dynamics parameters of the electrode process were detected by several electrochemistry techniques.     

新型不对称镍酞菁的合成、表征及光电性质

通过改进传统的酞菁合成方法, 得到了一种新的不对称酞菁2-(4-异丙基苯氧基)-9(10),16(17), 23(24)-三(4-叔丁基苯氧基)酞菁镍(简称NiPc2), 并通过质谱、红外光谱及紫外-可见-近红外光谱对其进行了表征, 分析了其可能的形成机理以及循环伏安性质. 这种新的不对称酞菁在近红外光区有明显的吸收峰, 并且其固体紫外-可见光谱的Q带发生红移, 说明形成了J-聚集体.     

硫酸铜催化合成二元酸系列酯

以硫酸铜为催化剂,合成了２０种二元酸系列酯,结果表明,该催化剂具有活性好、操作简便、无三度污染、酯收率高、可多次重复使用等优点。经正交试验得出已下酯较佳的合成工艺条件。     

Synthesis, spectroscopic and electrochemical property of an unsymmetrical porphyrin and its Zn compound

<正>In this article,a new 5-(p-maleicaminophenyl)-10,15,20-triphenylporphyrin(H_2P) and relative zinc compound(ZnP) were synthesized and characterized by means of elemental analyses,UV-vis,IR,MS and ~1H NMR spectroscopies.Furthermore,we have investigated the fluorescence spectroscopy of these compounds.The oxidation and reduction properties of the compounds were studied by the cyclic voltarnmetry,the oxidation-reduction potentials were obtained.     

Synthesis and Characterization of Bismuth-Silver Nanoparticles for Electrochemical Sensor Applications

Silver, bismuth, and bismuth-silver nanoparticles were synthesized and characterized by cyclic voltammetry, electrochemical impedance spectroscopy, ultraviolet-visible spectroscopy, infrared spectroscopy, Raman spectroscopy, and transmission electron microscopy to determine the electrochemical, optical, structural, and morphological properties of the nanomaterials. The silver, bismuth, and bismuth-silver nanoparticles were shown to have an average particle size of 10–30 nanometers by microscopy. The electrochemical results showed that the bismuth-silver nanoparticles exhibited good electrocatalytic activity that can be harnessed for sensor construction and related applications. The ultraviolet-visible, infrared, and Raman spectroscopy results confirmed the structural properties of the bismuth-silver nanoparticles. In addition, the microscopy and electron diffraction morphological characterization confirmed the nature of the bismuth-silver nanoparticles.     

硒芳香杂环化合物的光谱和电化学性质

用紫外光谱，荧光光谱和循环伏安法研究了含硒芳香杂环化合物（苤硒脑）在不同溶剂中的谱学和电化学性质，对不同分子结构或取代基的苤硒脑化合物的性质进行了比较，并初步探讨了溶剂对苤硒脑化合物谱学性质的影响规律。     

含吡啶基四硫富瓦烯衍生物的合成、 结构和电化学性质

在乙酰乙酸乙酯和氧化亚铜共同催化下, 二-(1,3-二硫环戊烯-2-硫酮-4,5-二硫)合锌酸四乙基铵盐分别与2-碘吡啶(1a)、 3-碘吡啶(1b)和4-碘吡啶(1c)反应, 制得硫酮化合物2,3-二(2-吡啶硫基)-1,3-二硫环戊烯-2-硫酮(2a)、 2,3-二(3-吡啶硫基)-1,3-二硫环戊烯-2-硫酮(2b)和2,3-二(4-吡啶硫基)-1,3-二硫环戊烯-2-硫酮(2c). 在醋酸汞催化下, 硫酮化合物2a, 2b和2c分别被氧化为2,3-二(2-吡啶硫基)-1,3-二硫环戊烯-2-酮(3a)、 2,3-二(3-吡啶硫基)-1,3-二硫环戊烯-2-酮(3b)和2,3-二(4-吡啶硫基)-1,3-二硫环戊烯-2-酮(3c). 以亚磷酸三乙酯为偶联剂, 氧酮化合物3a, 3b和3c分别发生自偶联反应生成2,3,6,7-四(2-吡啶硫基)四硫富瓦烯(4a)、 2,3,6,7-四(3-吡啶硫基)四硫富瓦烯(4b)和2,3,6,7-四(4-吡啶硫基)四硫富瓦烯(4c). 采用核磁共振波谱(NMR)、 傅里叶变换红外光谱(FTIR)和质谱(MS)分析了所合成化合物的结构和组成, 通过X射线衍射分析确认了吡啶基四硫富瓦烯衍生物4b和4c的晶体结构. 循环伏安法研究结果表明, 化合物4a, 4b和4c呈现准可逆的两电子转移过程, 结合量子化学计算, 分析了不同位置取代的吡啶基对四硫富瓦烯电化学电势的影响.     

Flavin Derivatives with Tailored Redox Properties: Synthesis,Characterization, and Electrochemical Behavior

This study establishes structure–property relationships for four synthetic flavin molecules as bioinspired redox mediators in electro‐ and photocatalysis applications. The studied flavin compounds were disubstituted with polar substituents at the N1 and N3 positions (alloxazine) or at the N3 and N10 positions (isoalloxazines). The electrochemical behavior of one such synthetic flavin analogue was examined in detail in aqueous solutions of varying pH in the range from 1 to 10. Cyclic voltammetry, used in conjunction with hydrodynamic (rotating disk electrode) voltammetry, showed quasi‐reversible behavior consistent with freely diffusing molecules and an overall global 2e^?, 2H⁺ proton‐coupled electron transfer scheme. UV/Vis spectroelectrochemical data was also employed to study the pH‐dependent electrochemical behavior of this derivative. Substituent effects on the redox behavior were compared and contrasted for all the four compounds, and visualized within a scatter plot framework to afford comparison with prior knowledge on mostly natural flavins in aqueous media. Finally, a preliminary assessment of one of the synthetic flavins was performed of its electrocatalytic activity toward dioxygen reduction as a prelude to further (quantitative) studies of both freely diffusing and tethered molecules on various electrode surfaces.