席夫碱与锌配合物的应用研究进展

席夫碱作为配体具有良好的配位能力和极大的灵活性,且其配合物在生物化学、医药、催化、电化学等方面表现出许多新颖的性能,因而席夫碱-金属配合物的研究一直受到广泛重视。本文通过对国内外席夫碱锌（Ⅱ）配合物的研究资料进行了分析研究,较系统的综述了席夫碱锌配合物在医药、光致变色以及催化等领域的应用。     

5-氯水杨醛缩L-赖氨酸席夫碱Co、Ni配合物的合成及表征

氨基酸是生命体的内源物质,是生物体细胞生长所必须的生理活性物质。氨基酸席夫碱及其金属配合物在医学、医药、催化、光学、材料等诸多领域都具有广阔的应用前景,已成为当前配位化学的研究热点之一。因此,通过反应引入各类功能基团使其衍生化,并合成新型的氨基酸席夫碱及其金属配合物,研究其分子结构、理化性质及实际应用,对配位化学的发展具有重要的意义。本文以L-赖氨酸、5-氯水杨醛作为前躯体,合成了席夫碱配体及L-赖氨酸席夫碱镍、L-赖氨酸席夫碱钴配合物;采用红外光谱、紫外可见光谱、摩尔电导率及热重分析等对配合物进行表征,并推断出可能的化学结构。     

杂环化合物席夫碱及其配合物的研究进展

概述了杂环化合物席夫碱及其配合物的研究现状,重点介绍了杂环化合物席夫碱及其配合物的合成方法及在生物医药领域中的应用,并对其发展趋势进行了展望。     

席夫碱的合成及其金属配合物的合成与表征

合成了4-氨基-1,2,4-三氮唑,乙酰二茂铁,以及未见报道的含水杨醛基的席夫碱和含乙酰二茂铁基的席夫碱,席夫碱分别与各类金属醋酸盐的配位,通过IR、摩尔电导、UV了解其组成。     

多羟基磺胺席夫碱对碳酸酐酶抑制活性的研究

磺胺席夫碱是较好的碳酸酐酶抑制剂,然丽对于多羟基磺胺席夫碱的抑制活性研究较少。文章采用微波辅助合成法设计合成了18种多羟基磺胺席夫碱,通过测定该系列化合物对牛碳酸酐酶活性半抑制浓度来评定其抑制活性,探索化合物分子中羟基对碳酸酹酶催化活性的影响。结果表明,对照的4－羟基苯甲醛-4－氨基苯磺酰胺席夫碱（化合物5）对牛红细胞...     

席夫碱反应在化学合成上的应用

席夫碱反应作为一种常见的化学反应,在化学合成中占据着重要地位,要想更好地将化学合成反应展示出来,就应该按照化学合成反应中的要求,及时的对其反应中的席夫碱应用形式进行控制,确保在相应反应形式的控制中,能够有效地提升席夫碱反应与化学合成反应的应用效果。鉴于此,针对席夫碱反应在化学合成上的应用进行了研究,希望能够为席夫碱在化学合成反应中的应用形式了解提供参考。     

碘掺杂的聚二茂铁基席夫碱的合成与性能研究

利用二茂铁甲醛与对、间、邻苯二胺在中性条件下缩合,得到了3种小分子二茂铁基席夫碱,利用Friedel-Crafts反应合成了一类新型的导电聚二茂铁基席夫碱,然后用碘对其进行掺杂,得到了系列电荷转移配合物.聚合物的电导率经碘掺杂后可提高几个数量级,同时均有紫外吸收功能;其中碘掺杂聚对二茂铁基席夫碱配合物的电导率最高,达3.17×10-4S/cm,而碘掺杂聚邻二茂铁基席夫碱配合物的磁增重另外2种配合物的2～3倍.     

新型双核席夫碱化合物的合成、表征

用乙二胺、乙酰丙酮与水杨醛反应合成了一种不对称席夫碱配体单元（H2L^1）,将所得不对称席夫碱配体单元（H2L^1）与氨水、I2反应合成了对称新型双核席夫碱配体（H4L^1）,通过元素分析、核磁共振、红外光谱、质谱分析、紫外光谱等手段对合成得到的不对称席夫碱配体单元及新型双核席夫碱化合物进行了表征。     

D-氨基葡萄糖Schiff碱的制备及抑制真菌性能研究

以D-氨基葡萄糖盐酸盐与对甲氧基苯甲醛、对甲基苯甲醛反应合成了两种新的D-氨基葡萄糖席夫碱(对甲氧基苯甲醛缩D-氨基葡萄糖席夫碱、对甲基苯甲醛缩D-氨基葡萄糖席夫碱),收率分别为67.9%、74.6%。使用UV1、HNMR和IR对产物进行了结构表征。测试了两种席夫碱甲醇饱和溶液对香蕉炭疽病菌、芒果炭疽病菌、芒果蒂腐病菌、芒果焦腐病菌、番木瓜炭疽病菌等植物病原真菌的抑菌性能。结果表明,对甲氧基苯甲醛缩D-氨基葡萄糖席夫碱对香蕉炭疽病菌、芒果蒂腐病菌、芒果焦腐病菌具有很强的抑菌活性,对甲基苯甲醛缩D-氨基葡萄糖席夫碱对香蕉炭疽病菌、芒果炭疽病菌具有很强的抑菌活性。     

席夫碱导电性研究

共轭聚席夫碱因导电且电导率可调而具有制备吸波材料的潜在可能性。叙述了导电聚合物导电原理,详细综述了席夫碱电导率研究情况,指出碘掺杂是已有研究中提高席夫碱电导率的主要方式,提出了冲击聚席夫碱电导率新高度可能的方法。最后评估了其作为吸波材料的可能性并展望了发展前景。     

对氟苯甲醛缩乙醇胺席夫碱合成、表征及抑菌活性的测试

通过对氟苯甲醛与乙醇胺的反应，合成了对氟苯甲醛缩乙醇胺席夫碱，并对其进行了元素分析、核磁共振氢谱、红外光谱、紫外光谱表征。抑菌实验表明，该席夫碱对金黄色葡萄球菌和革兰氏阴性菌均有较好的抑制作用。     

Chitosan Biopolymer Schiff Base: Preparation,Characterization, Optical,and Antibacterial Activity

Natural biopolymer used for hydrogels has attracted increasing attention in the multifaceted areas of biomedical science and engineering. The authors prepared chitosan biopolymer Schiff base by solvent exchange method using a simple aliphatic crosslinker, crotanaldehyde. The identity of Schiff base was confirmed by UV-vis and Fourier-transform infrared spectroscopy. The chitosan Schiff base was evaluated by XRD, TGA, DSC, and SEM. The microbiological screening results demonstrated the antibacterial activity of Schiff base against Escherichia coli and Staphylococcus aureus bacteria. These results suggest that the newly prepared Schiff base may open a new perspective in biomedical applications.     

Antibacterial Role of SO(4), NO(3), C(2)O(4) and CH(3)CO(2) Anions on Cu(II) and Zn(II) Complexes of a Thiadiazole-derived Pyrrolyl Schiff Base

A condensation reaction of 2-amino-1,3,4-thiadiazole with 2-pyrrolecarboxaldehyde to form tridentate NNN donor Schiff base has been performed. The prepared Schiff base was further used for the formation of metal complexes having stoichiometry [M(L)(2)]X(n), where M=Cu(II) or Zn(II), L=N-(2-pyrrolylmethylene)-2-amino-1,3,4-thiadiazole, X=SO(4) (2-), NO(3) (-), C(2)O(4) (2-) or CH(3)CO(2-) and n=1 or 2. The new compounds described here have been characterized by their physical, spectral and analytical data, and have been screened against several bacterial strains such as Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa. The antibacterial potency of the Schiff base increased upon chelation/complexation, having the same metal ion (cation) but different anions opening up a novel approach in finding new ways to fight against antibiotic resistant strains.     

含硫Schiff碱型配体的合成研究—环己酮缩烯丙基氨基硫脲的合成及结构表征

报道一种新型含硫席夫碱的合成，结构表征，并测试了它对某些金属离子的配位性。     

Schiff Base Complexes in Macromolecules

Summary  Schiff base metal complexes are a class of compounds that have been studied extensively because of their attractive chemical and physical properties, and their wide-ranging applications in numerous scientific areas. Researchers have incorporated Schiff base complexes into polymers, generating new materials with useful mechanical, thermal, chemical, and electronic properties. This work comprehensively reviews the developments in macromolecules containing Schiff base metal complexes, emphasizing new synthetic strategies and characterization techniques that were used to prepare and study these polymers. This paper is dedicated to the pioneering research of Dr. Ian Manners.     

壳聚糖与柠檬醛缩合反应产席夫碱及其抗菌活性

通过壳聚糖与柠檬醛在超声波振荡下反应制备了壳聚糖缩柠檬醛席夫碱。采用[L9（33）]正交实验探讨了反应时间、反应温度及反应物配比对壳聚糖席夫碱缩合率和取代度的影响。最佳条件为：反应物配比n（壳聚糖）∶n（柠檬醛）=1∶6,反应温度40～50 ℃,反应时间10 h,壳聚糖席夫碱的缩合率可达86%,取代度为0.82。红外光谱和X射线衍射光谱结果表明产物具有壳聚糖席夫碱的结构特征。对大肠杆菌、金黄色葡萄球菌和黑曲霉的抗菌实验表明,该产物对大肠杆菌、金黄色葡萄球菌和黑曲霉的最低抑菌浓度分别为1 g/L、1 g/L和5 g/L,其抗菌活性随浓度的增加而增加,且优于壳聚糖。     

New method in synthesis of nano uranyl(VI) Schiff base complexes: Characterization and electrochemical studies

This study presents a new method in synthesis of nano uranyl Schiff base complexes. In this method slow addition of dilute uranyl(VI) acetate solution to dilute Schiff base solution following the reflux for about 24 h, yields nano uranyl(VI) Schiff base complexes. Characterization of Schiff base ligands and nano uranyl complexes has been done using ¹H NMR, IR, UV–vis spectroscopy, elemental analysis. Schiff base ligands were synthesized by the condensation of one mole 3,4-diaminobenzophenone and two moles salicylaldehyde or substituted salicylaldehyde (3-OMe, 4-OMe, 5-OMe, 5-Br, 5-Cl). The electrochemical properties of the uranyl(IV) complexes were investigated by cyclic voltammetry. A good correlation was observed between the oxidation potentials and the electron withdrawing character of the substituents on the Schiff base ligands, according to the following trend: 5-MeO < H < 5-Br ≈ 5-Cl. Also the effect of the position of the substituted groups of Schiff base on the anodic potentials is as follows: 5-OMe < 3-OMe < 4-OMe.     

两种含二茂铁基schiff 碱的合成及其抑菌活性

通过乙酰基二茂铁与两种杂环胺(4-氨基安替比林,2-氨基-5-巯基-1,3,4-噻二唑)缩合合成了两种含二茂铁基的Schiff碱(a、b),产率分别为85.8%和72.6%,并通过IR、1HNMR及元素分析对其结构进行了确证。最后,将合成出的两种Schiff碱分别对3种细菌(金黄色葡萄球菌、大肠杆菌、枯草芽孢杆菌)进行了初步抑菌实验,将其结果与非杂环类Schiff碱Fc-C(CH3)NC6H5=(c)的抑菌性能做了比较。结果表明,Schiff碱对上述3种细菌都有抑制作用,且抑菌效果随着Schiff碱浓度的增大而增强。此外,杂环类Schiff碱(a、b)对上述3种细菌的抑菌活性明显优于非杂环类Schiff碱(c)。     

Microwave synthesis and spectroscopic studies of some complex compounds as pigments and their applications in paints

Metal complex pigments have been widely used for various applications such as pigments in coatings. This work presents the use of microwave technique (Green chemistry) for the synthesis of new copper(II), nickel(II), iron(III), and chromium(III) Schiff base complexes derived from metal salts and Schiff base ligand. Also, the microwave technique was used in the synthesis of Schiff base ligand which is derived from selected amine, namely methoxy-tolidine, and selected aldehyde, namely 2-hydroxynaphthaldehyde. The prepared ligand and metal complex pigments were characterized by elemental analysis, NMR, spectral UV–Vis, infrared, and thermal gravimetric analysis. The physical and mechanical properties and corrosion resistance of dry paint films were also examined. The obtained results revealed that the prepared metal complex pigments showed excellent mechanical and corrosion resistance.     

Synthesis and characterization of a new photochromic alkylene sulfide derivative

A process has been developed for the synthesis of a new photochromic alkylene sulfide derivative. The process involves the synthesis of an alkylene sulfide with terminal free amino groups and a novel unsymmetrical photochromic diarylperfluorocyclopentene containing an aldehyde group, which coupled together to produce the corresponding Schiff base. The structures of the products were confirmed by a range of spectroscopic techniques.