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1.
首次合成了Eu3+离子与对甲氧基苯甲酰-苯甲酰甲烷(MDBM)与1,10-邻菲罗啉(phen)三元混配配合物.实验测得它的化学式为Eu(MDBM)3·Phen.对该配合物进行了元素分析、热谱、红外光谱、荧光光谱的摄取.  相似文献   

2.
UO2(PMBP)2HMPA配合物的合成与结构研究   总被引:1,自引:0,他引:1  
合成了UO_2(PMBP)_2HMPA(PMBP=1-苯基-3-甲基-4-苯甲酰基-吡唑啉酮-5,HMPA=六甲基磷酰胺),测定了该配合物的元素组成、红外光语、质子核磁共振谱及晶体结构。该晶体属于单斜晶系,空间群为P2_1,a=1.1468(5)nm,b=1.4777(2)nm,c=1.4056(6)nm,β=100.91(4)°,V=2.3389nm ̄3,D_c=1.43g/cm ̄3,Z=2,F(000)=979.85。在配合物中,U原子采用七配位,其配位多面体为扭曲的五角双锥。  相似文献   

3.
在水溶液中合成了硝酸铈(Ⅲ、Ⅳ)与甘氨酰甘氨酸(Digly)和甘氨酰甘氨酰甘氨酸(Trigly)4种尚未见报道的固体配合物.经元素分析、红外光谱、热分析及核磁共振谱证明,配合物的组成为Ce(NO3)3·4Digly·4H2O;Ce(NO3)3·4Trigly·3H2O;Ce(NO3)4·2Digly·H2O和Ce(NO3)4·2Trigly·3H2O  相似文献   

4.
合成了3种新的锰(Ⅱ)的多核配合物,分别为Mn3(L)Cl6·12H2O(Ⅰ),Mn2(L)Cl4·8H2O(Ⅱ)和Mn2(L)(NO3)4·9H2O(Ⅲ).其中L为1,1,4,7,10,10-六(2-甲基苯并咪唑基)三乙四胺(TTHB),由三乙四胺六乙酸与邻苯二胺共热缩合而得.根据配合物的摩尔电导、红外光谱、电子光谱和顺磁共振及元素分析,推测配合物中Mn(Ⅱ)的配位环境为四方锥或变形八面体  相似文献   

5.
研究了 1苯基3甲基4苯甲酰基吡唑酮5( H P M B P)和4羟基安替比林( H A P)的氯仿溶液从硝酸介质中对 Ln(Ⅲ)( Ln= La, Pr, Nd, Sm , Gd)的协同萃取;通过斜率法确定了萃合物的组成为 La2( P M B P)6( H A P)3;考察了萃取剂浓度和溶液酸度对萃取机能的影响;测定了 La3+ , Pr3+ , Nd3+ , Sm 3+ , Gd3+ 的半萃取p H 值分别为4.12,3.69,3.54,3.50,3.42,合成了 H P M B P和 H A P对 La3+ 的协同萃取配位化合物 La2( P M B P)6·( H A P)3。  相似文献   

6.
采用乙醇-水溶液析出法合成了稀土离子RE3+(La3+,Nd3+,Gd3+,Dy3+,Y3+,Yb3+)与间硝基苯甲酸(HA)和邻菲罗啉(phen)的二元及三元固态配合物.通过元素分析、热重分析证实配合物组成为NdA3·3H2O,REA3·2H2O(RE=Gd,Dy),REA3(RE=Yb,Y)和LaA3·phen.考察了配合物的红外光谱、紫外光谱、荧光光谱和溶解性.  相似文献   

7.
合成了稀土硝酸盐与双希夫碱水杨叉替联苯胺(以L表示)的3种新固态配合物,并对合成的配合物进行了元素分析和红外光谱、紫外光谱、差热─热重、摩尔电导分析,确定配合物的组成(LnL(NO3)2)NO3·4H2O(Ln=Y,Nd,Eu),推断出了配合物可能的结构。  相似文献   

8.
稀土—二苯甲酰甲烷配合物微晶的合成及荧光光谱   总被引:3,自引:0,他引:3  
合成了稀土(RE)二苯甲酰甲烷(DBM)配合物RE(DBM)3·H2O(RE=Sm、Eu、Tb、Dy、Pr、Nd、Gd、Y),用红外光谱、紫外光谱及差热热重谱对其进行了表征,用透射电镜观察了该配合物微晶尺寸,并研究了配合物在固态时的荧光光谱.结果表明该系列配合物微晶的尺寸在50~250nm之间,在RE(DBM)3·H2O(RE=Sm、Eu)中可观察到较强的稀土离子的特征发射,而在RE(DBM)3·H2O(RE=Tb、Dy)中只能观察到配体自身发射  相似文献   

9.
RE(Met)(NO3)3.H2O(RE=Er,Yb,Y)固体配合物的研究   总被引:1,自引:0,他引:1  
水相中制得三个硝酸稀土盐与蛋氨酸的配合物.通过化学分析、元素分析、摩尔电导、红外分析、紫外光谱、TG-DTG及X-射线粉末衍射等方法研究了这些配合物的一些物理和化学性质.确定其通式为RE(Met)(NO3)3·H2O(RE=Er,Yb,Y;Met=DL-α-Methionine)  相似文献   

10.
本文研究了1-苯基-3-甲基-4-(α-呋喃甲酰基)-5-吡唑酮(HA)单独萃取Y(Ⅲ)及其与二苯亚砜(DPSO),磷酸三丁酯(TBP)或三辛基氧膦(TOPO)协同萃取Y(Ⅲ)的行为。确定了萃合物的组成分别为YA_3,YA_3·DPSO,YA_3·TBP和YA_2(NO_3)·2TOPO.算得萃取平衡常数分别为:logK_(A(HA))=-6.86,1ogK_(AB(HA+DPSO))=-3.89,logK_(AB(HA+TBP))=-2.53和logK_(AB(HA+TOPO))=5.13.  相似文献   

11.
合成并用元素分析、红外光谱和核磁表征了共振配合物EuY(DBM)4(Ma)phen2(C1)和Eu2(DBM)4(Ma)phen2(C2).用真空蒸镀组装了发光器件,其结构是:Al0.9:Ag0.1/Alq/Eu-complex/TPD/ITO.在18V电压和55 mA cm-2电流下,器件C1的最大发光亮度是342 cd m-2;在18V电压和57mAcm-2电流下,器件C2的最大发光亮度是267 cd.m-2.在18V电压和55 mA cm-2电流下,器件C1的最大发光亮度是342 cd m-2.C1的发光亮度比C2大,其原因是Y3 的配体吸收的能量通过马来酸根迁移给了Eu3 .  相似文献   

12.
基于分子设计思想, 合成星型铕(Ⅲ)β-二酮配合物三(二苯甲酰甲基){1,3,5-三-[2-(2-吡啶)苯并咪唑]-甲基苯}-铕(Ⅲ)(Eu3(DBM)9(TMMB)). 采用真空蒸镀法, 以4,4′,4″-三( 3-甲基-苯基-苯胺基) 三苯胺(m-MTDATA)为电子给体, Eu3(DBM)9(TMMB)为电子受体制备有机光伏器件. 在紫外灯(365 nm, 1.6 mW/cm2 )从铟锡氧化膜(ITO)方向垂直照射下, 器件的开路电压、 短路电流密度、 填充因子和能量转换效率分别为1.70 V,38.9 μA/cm2,0.25和1.05%. 实验结果表明, 星型铕(Ⅲ)β-二酮配合物具有较好的光伏性能.  相似文献   

13.
含稀土配合物的聚合物微球的制备及性质研究   总被引:1,自引:0,他引:1  
通过乳液聚合法,将合成稀土配合物Eu(DBM)3·H2O 纳米微晶分散到甲基丙烯酸甲酯的单体中,进行聚合反应,得到了含稀土配合物的聚甲基丙烯酸甲酯的聚合物微球.通过红外光谱、元素分析、透射电子显微镜(TEM)、荧光光谱、X射线光电子光谱(XPS)和ICP等测试方法对其组成、结构、荧光性质以及微观形貌等进行了表征.结果表明,在聚合过程中甲基丙烯酸甲酯单体中的羰基参与配位,有利于配合物被引入到聚合物微球中,从而使复合配合物的聚合物微球发出红色稀土铕离子的特征荧光,这一研究将为聚合物微球在光电学、磁学以及激光等领域的应用提供广阔前景.  相似文献   

14.
 以二苯甲酰甲烷(DBM)为主配体、新配体2-(2-苯并咪唑基)-8-辛氧基喹啉为第二配体,合成了一种新的Eu(Ⅲ)配合物发光材料,对所得配合物的热性能、光性能和电化学性能进行了研究,结果表明,该配合物具有较高的热稳定性,熔点为235 ℃,起始分解温度为252 ℃。配合物的HOMO轨道能级(EHOMO)、LUMO轨道能级(ELUMO)及能隙(Eg)分别为-6.12、3.06和3.06 eV。荧光光谱分析表明,在固态条件下,配体吸收的能量全部转移给Eu(III)离子,配合物的荧光光谱在611 nm处显示一对称的单峰,其半峰宽为4.7 nm。  相似文献   

15.
The calculation of binary and ternary Eu3+ and Tb3+ complexes such as Eu(DBM)3, Tb(ACA)3, Eu(DBM)3 Phen and Tb(ACA)3 Phen, were performed with quantum chemical INDO approach. On the basis of the triplet state energy level of ligand, the matching condition of the excited state level of RE3+, the conjugated energy of ligand, the atom net charge, Mulliken Overlap , the advanced linear orbital energy and the electronic totai energy etc, the reason that the luminescent properties of ternary Eu3+ and Tb3+ complexes are better than those of binary completes was initially interpreted. It is consistent with the experimental data.  相似文献   

16.
应用害虫种群系统控制的状态空间方程和作用因子添加分析法 ,模拟 1%苦皮藤乳油对小菜蛾种群控制作用。结果表明 ,其控制机理主要是对小菜蛾成虫产卵的显著忌避作用 ,尤其是在种群发展的初期 ,由于其显著的的忌避作用 ,降低田间卵量 ,使其种群数量明显降低下来 ,从而有效控制其为害。  相似文献   

17.
作者运用荧光光谱和光声光谱技术,研究了固体Sm(DBM)3和Sm(SAL)3配合的发光特性,能量传递过程和能级状况,并对配合和中心离子间不同的能量传递途径及能量传递的有效性进行了讨论。  相似文献   

18.
The volatiles, absorbed by Porapak Q and eluted by hexane, from Chinese cabbage, Brassica campestris chinesis (L.) Makino. var. communis Tsen et Lee, have been identified as allyl isothiocyanate, Z-3-hexenyl acetate, 3,7-dimethyl-1,3,6-octatriene, 2,5-hexanediol, Z-3-hexen-1-ol, nonanol, b-myrcene, a-pinene, E-2-hexen-1-ol, D-limonene, Z-3-hexenyl propanoate, linalool, geraniol, E-4-hexen-1-ol, Z-3-hexenyl isovalerate, a-terpinene, b-caryophyllene, 3-carene and a-caryophyllene, by their mass spectra and retention times in comparison with authentic samples. The first five chemicals are the main components. All components can elicite electroantennogram (EAG) responses of diamondback moth (DBM), Plutella xylostella, in which allyl isothiocyanate and C6 alcohols and esters, i.e. Z-3-hexen-1-ol, E-2-hexen-1-ol, E-4-hexen-1-ol, Z-3-hexenyl isovalerate and 2,5-hexanediol elicite stronger EAG responses than other components, and EAG responses of female moths to them are slightly larger than those of male moths. However, EAG responses elicited by terpenes are smaller, and EAG responses from females to terpenes are smaller than those from males, but b-myrcene can evoke stronger EAG responses from both females and males. Volatiles from intact Chinese cabbage, allyl isothiocyanate, 2,5-hexanediol and Z-3-hexenyl isovalerate intensely cause DBM directional flying and landing in wind tunnel, in which volatiles from intact Chinese cabbage have the strongest activity, and the next is allyl isothiocyanate. Allyl isothiocyanate is more attractive to females than to males a bit. As for a-terpinene and other subordinate components, EAG and wind tunnel test make sure they have weak activity.  相似文献   

19.
采用克莱森酮酯缩合法合成了二苯甲酰甲烷(DBM),并用元素分析、质谱、红外光谱对其进行了表征.研究了二苯甲酰甲烷的基本性质,化合物在270~380 nm的紫外区出现强吸收带,其化学结构式存在烯醇互变,液体状态下以烯醇式为主,易于形成分子内氢键.  相似文献   

20.
Plasticizers in plasticized polyvinyl chloride (PVC) are generally physically added into PVC by compounding so that they can be rapidly leached from PVC articles during service. This results in their migration into the human environment with potentially serious consequences and lower effectiveness of the additives in PVC. Potentially the chemical modification of PVC during processing via reactive processing procedure is one of the most attractive solutions to these problems.In this paper, we will report our work in exploring an environmentally friendly and cost-effective reactive processing approach for chemically binding plasticizer into PVC chains.Our research results indicate that it is possible to reduce the plasticizer migration from a plasticized PVC by chemically binding of a certain plasticizer into PVC chains via reactive processing. Thus, high levels of binding of DBM, a maleate plasticizer, to PVC may be reached in less than 10 min under prevailing reactive processing conditions. The extent of binding of DBM as a function of the loading shows two peaks: one at a relatively low loading (less than 0.12 mol*kg-1 PVC) tends to 100%, the other in the high loading region (more than 1.5 mol*kg-1 PVC) approaches around 50%. The DBM modified PVC polymer exhibits behaviours as a plasticized PVC but its bound plasticising groups would not be leached by solvent extraction.  相似文献   

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