钇三元配合物的合成、表征及其抗菌活性研究

以YCl3.6H2O、2,6-吡啶二羧酸(PDA)和噻吩甲酰三氟丙酮(TTA)为原料,制备了钇的三元配合物,用元素分析、红外光谱、X射线光电子能谱对配合物进行了表征,确定了配合物的化学组成为:Na[Y(TTA)2(PDA)].3H2O(反应时间为1 h)和Na2[Y(TTA)3(PDA)].3H2O(反应时间为0.5 h)。抗菌实验表明,Na[Y(TTA)2(PDA)].3H2O对大肠杆菌和金黄色葡萄球菌的抑菌圈直径分别约为14,12 mm,Na2[Y(TTA)3(PDA)].3H2O分别约为16,14 mm,说明配合物对大肠杆菌、金黄色葡萄球菌具有一定的抑制作用,且对大肠杆菌的抑制效果较好。     

稀土三元配合物的合成、表征及其生物活性研究

以氯化镧、席夫碱、邻菲啰啉为原料,制备了新型稀土镧三元配合物,通过元素分析、紫外光谱、红外光谱、透射电子显微镜等手段对其进行了表征,确定了三元配合物的化学组成为La(L)phen(NO3)3C2H5OH.CH3OH。抗菌实验结果表明,配合物对大肠杆菌和金黄色葡萄球菌的抑菌圈直径分别为26 mm和20 mm,最小抑菌浓度分别为60 mg/L和130 mg/L,具有较强的抑制作用,且对大肠杆菌的抑制效果较强。     

稀土钐二元、三元配合物的合成、表征及其生物活性研究

以氯化钐、2-氨基嘧啶和钼酸钠为原料,制备了两种新型稀土钐二元、三元配合物,通过元素分析、紫外光谱、红外光谱等手段对其进行了表征,确定了二元配合物的化学组成为Sm2(AP)(H2O)2Cl3(AP=2-氨基嘧啶),三元配合物的化学组成为:Sm3(AP)(MoO4)2(CH3OH)4Cl5。抗菌结果表明,二元配合物对大肠杆菌和金黄色葡萄球菌的抑菌圈直径分别为13 mm和15 mm,三元配合物分别为13 mm和13 mm,两种配合物对大肠杆菌、金黄色葡萄球菌都有一定的抑制作用。采用MTT法对两种配合物诱导癌细胞凋亡能力做了初步研究,两种配合物的半数抑制浓度IC50在0.001~0.01 mg/mL之间,证明其具有诱导癌细胞凋亡的作用。     

席夫碱稀土铈配合物的合成、表征及抗菌活性

利用四乙酰丙酮铈配合物[Ce（acac）4]和Salphen型水杨醛缩邻苯二胺（Schiff碱）合成了双齿Salphen型席夫碱铈金属配合物（SB-Ce）,用红外光谱（FTIR）、紫外-可见光谱（UV-Vis）和差热-热重（TG-DTA）分析进行结构表征,将SB-Ce配合物用于抑菌活性实验。结果表明,SB-Ce对大肠杆菌、枯草杆菌、金黄色葡萄球菌和酵母菌都有一定的抑菌活性,其中对金黄色葡萄球菌的抑菌性最好。     

稀土与含氮中性配体配合物的合成、表征及抗菌作用

合成了1,10—二氮杂菲及2,2’—联杂氮苯与稀土钐的三元配合物,通过元素分析、红外光谱、紫外光谱、摩尔电导、热分析等对该配合物进行了表征.该配合物的抗菌试验表明其具有较强的广谱抗菌作用.     

稀土-蛋氨酸-邻菲咯啉配合物的合成、表征及抗菌活性研究

采用冷凝回流法合成了4种新型稀土(镧、铕、钐和钕)-蛋氨酸-邻菲咯啉三元配合物,通过元素分析、EDTA-滴定、摩尔电导、红外光谱,确定了配合物的组成为RE(Met)_3phenCl_3·3H_2O(RE:La~(3+)、Eu~(3+)、Sm~(3+)、Nd~(3+);Met=L-蛋氨酸;phen=邻菲咯啉).抗菌活性的研究表明,与配体相比,稀土三元配合物对大肠杆菌(Escherichia coli)和金黄色葡萄球菌(Staphylococcus aureus)均具有更强的抑菌能力.     

磺基水杨酸稀土配合物的合成与表征

以磺基水杨酸和氧化稀土为原料,用流变相反应法合成了6种磺基水杨酸稀土配合物,并通过元素分析、IR、TG/DTA对其结构进行了表征。结果表明,该配合物的组成为RE2(HSSA)3·nH2O,金属离子与配体的化学计量比为2∶3;配体中羰基氧、邻位羟基氧与稀土金属离子配位;得到的配合物在120~630℃存在2个分解阶段:120~200℃为失去水的过程、370~630℃为热分解过程,最终分解产物为RE2O3。     

醋酸稀土与含氮配体配合物合成,表征及抗菌性能

本文报导了稀土醋酸酸盐与１，１０－邻菲罗啉及２，２′－联吡啶在甲醇中合成出三元固态配合物的方法，通过元素分析，红外光谱及热重分析对该系列配合物进行了表征。该配合物的抗菌试验表明其具有较强的广谱抗菌作用。     

水溶性壳聚糖稀土配合物的合成、表征及其抑菌活性

[目的]研究水溶性壳聚糖及其稀土离子金属配合物的抑菌活性。[方法]合成水溶性壳聚糖和稀土离子La(Ⅲ)、Ce(Ⅲ)、Nd(Ⅲ)的配合物,利用FT-IR、UV-Vis和热重分析仪对配合物进行表征,研究壳聚糖及其配合物对芦笋茎枯病菌Phomopsis asparagus的抑制活性。[结果]壳聚糖Ce(Ⅲ)配合物对Phomopsis asparagus的抑菌活性较单一的水溶性壳聚糖及其他稀土配合物显著提高。[结论]水溶性壳聚糖稀土配合物抑菌活性分别为Ce(Ⅲ)配合物>La(Ⅲ)配合物>Nd(Ⅲ)配合物>壳聚糖。     

Study on macromolecular lanthanide complexes (V): Synthesis,characterization, and fluorescence properties of lanthanide complexes with the copolymers of styrene and acrylic acid

In this study, the luminescent macromolecular lanthanide complexes Ln‐PSt/AA (Ln = Eu and Tb; St = styrene; AA = acrylic acid) have been synthesized, and an extensive characterization has been carried out by means of elemental analysis, FTIR, thermal analysis, and fluorescence determination. The results showed that the carboxylic groups on the chain of the polymers acted as bidentate ligands coordinated to lanthanide ions; and the coordination degree of ? COO^?/Ln³⁺ in the macromolecular complexes was closely dependent on both the pH value of the solution and the molar ratio of St to AA in the polymeric ligands. Thermal analysis manifested that these Ln‐PSt/AA (Ln = Eu and Tb) complexes had high thermal stability and solvent resistance, and these macromolecular complexes were highly crosslinked. The fluorescence determination indicated that Ln‐PSt/AA complexes could emit characteristic fluorescence with comparatively high brightness and good monochromaticity, and the fluorescence intensity changed with increasing lanthanide ions content. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009     

Synthesis,characterization, and fluorescence properties of lanthanide complexes with the copolymers of 2‐butenedioic acid (z)‐mono‐ethyl ester and styrene

In this study, the luminescent macromolecular lanthanide complexes with the copolymers of styrene (St) and 2‐butenedioic acid (z)‐mono‐ethyl ester (BAME) have been synthesized, and an extensive characterization has been carried out by means of elemental analysis, FTIR, thermal analysis, and fluorescence determination. The results showed that the carboxylic groups on the chain of the polymers acted as bidentate ligands coordinated to lanthanide ions; and the coordination degree of ‐COO^?/Ln³⁺ in the macromolecular complexes was closely dependent on both the pH value of the solution and the molar ratio of St to BAME in the polymeric ligands. Thermal analysis manifested that the macromolecular complexes Ln‐PSt/BAME (Ln = Y, Sm, Dy, Eu, and Tb) were highly crosslinked and had high thermal stability and solvent resistance. The fluorescence determination indicated that Ln‐PSt/BAME complexes could emit characteristic fluorescence with comparatively high brightness and good monochromaticity, and the fluorescence intensity increased with an increasing of lanthanide content. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011     

Metal complexes of diisopropylthiourea: synthesis, characterization and antibacterial studies

Co(II), Cu(II), Zn(II) and Fe(III) complexes of diisopropylthiourea have been synthesized and characterized by elemental analyses, molar conductivity, magnetic susceptibility, FTIR and electronic spectroscopy. The compounds are non-electrolytes in solution and spectroscopic data of the complexes are consistent with 4-coordinate geometry for the metal(II) complexes and six coordinate octahedral for Fe(III) complex. The complexes were screened for their antibacterial activities against six bacteria: Escherichia coli, Pseudomonas auriginosa, Klebsiella pneumoniae, Bacillus cereus, Staphylococcus aureus and Bacillus pumilus. The complexes showed varied antibacterial activities and their minimum inhibitory concentrations (MICs) were determined.     

两种甲氧基苯基咔咯配合物的合成与表征

以吡咯和甲氧基苯甲醛为反应起始物,在水和甲醇溶剂中采用改进的Lindsey法合成了4-甲氧基苯基咔咯(a)和2,4-二甲氧基苯基咔咯(b)两种无金属甲氧基苯基咔咯配合物.测定了配合物在二氯甲烷溶剂中的紫外-可见及荧光光谱.发现配合物a和b的Soret分别位于418和420 nm,Q吸收峰则分别位于570、608、645...     

Synthesis,characterization, and fluorescence properties of lanthanide complexes with poly(styrene‐co‐methacrylic acid)

A series of new complexes of poly(styrene‐co‐methacrylic acid) with Ln(III) (Ln = La, Eu, Tb) were synthesized and well characterized by means of elemental analysis, FTIR, differential scanning calorimetric (DSC) analysis, TG‐DTA analysis, X‐ray diffraction (XRD), and fluorescence determination. The elemental analysis and FTIR studies showed that a large part of carboxylic groups on the side chain of the copolymer are coordinated with Ln(III) ions. The TG‐DTA and DSC analysis results indicated that the complexes have good thermal stability. XRD experiments showed that copolymers and the complexes are amorphous. Among these complexes, Eu(III) complexes and Tb(III) complexes exhibit characteristic fluorescence with comparatively high brightness and good monochromaticity. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009     

邻菲啰啉-水杨酸-稀土三元配合物的合成与表征

在无水乙醇溶液中 ,以邻菲啉 ( Phen) ,水杨酸 ( HSal)为配体 ,合成了 7种稀土三元固体配合物。通过元素分析 ,红外光谱、紫外光谱、摩尔电导确定了配合物的化学组成为 RE( Phen) 2 ( Sal) 2 Cl· H2 O( RE=La3+ ,Nd3+ ,Sm3+ ,Eu3+ ,Gd3+ ,Tb3+ ,Dy3+ ) ,红外光谱表明稀土配合物中存在 RE— O和 RE— N配位键