Co,Mn,Ni的联苯酸配合物的合成及光谱研究

合成了联苯酸 ,并以其和吡啶为配体 ,制备了第一过渡系金属离子Co(Ⅱ ) ,Mn(Ⅱ ) ,Ni(Ⅱ )的 3种配合物 ,并通过元素分析、IR及UV等手段对配合物进行了表征 ,推测了可能的组成和结构。     

Interaction of Low-Intensity Laser Radiation with Blood and Its Components

The response of the blood of rabbits to the intravenous irradiation by a He-Ne laser radiation (λ = 632.8 nm) has been investigated by the UV-visible and IR absorption spectra of the whole blood, plasma, and erythrocyte mass. It has been established that hemoglobin is a primary photoacceptor absorbing low-intensity He-Ne-laser radiation. The exposure of blood to this radiation causes clearly defined changes in the IR and visible absorption spectra of the blood and erythrocytes. These spectral changes arise as a result of partial photodissociation of hemoglobin-ligand complexes in the process of absorption of laser radiation. It is suggested that photodissociation is a primary reaction that arises in blood exposed to a low-intensity laser radiation.__________Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 72, No. 2, pp. 230–235, March–April, 2005.     

掺杂金属离子对(Eu,Tb)稀土配合物发光性质的影响

合成了以柠檬酸为第一配体、1,10-菲咯啉为第二配体的单核稀土(Eu、Tb)配合物和Tb/Y、Eu/Y按不同比例混合的掺杂稀土配合物。采用红外光谱、紫外光谱、激发和发射光谱等对合成的配合物结构和荧光性能进行了表征。红外光谱表明稀土离子与第一、第二配体进行了配位,配合物的紫外吸收主要是配体的吸收,保持了π→π^* 电子跃迁的特征。激发和发射光谱表明,不发光稀土离子Y³⁺的掺入能显著增强发光稀土离子的光发射强度。     

新型Eu~(3+)、Tb~(3+)掺杂配合物的合成与荧光性能研究

合成了稀土(Eu3+和Tb3+)与二苯甲酰甲烷(DBM)、2,2′-联吡啶(Dipy)的一系列稀土配合物EuxTb1-x(DBM)3Dipy。元素分析和红外分析确定了配合物的组成,荧光光谱研究了荧光性质。铽掺入配合物后,铽能极大地增强铕的特征荧光,铽对铕配合物的发光有协同作用。在该系列配合物中,不仅有机配体可以将吸收的能量传递给发光的铕离子使其发光,而且铽离子也可将其吸收的能量通过分子内能量传递给铕离子。     

稀土-2, 3-二甲氧基苯甲酸-邻菲咯啉多元混配配合物的合成及表征

在水-乙醇的混合溶剂中,得到了NO-₃参与配位的稀土(RE3+)与2, 3-二甲氧基苯甲酸(2, 3-DMOBAH)及1,10-邻菲咯啉(Phen)的多元混配配合物。通过元素分析确定其组成为RE(2, 3-DMOBA)₂NO₃Phen(RE=La, Nd, Eu, Dy)。并利用红外吸收光谱,紫外吸收光谱,TG-DTA等对配合物进行了表征。     

氨基葡萄糖及羧甲基氨基葡萄糖与铁(Ⅱ)、锌(Ⅱ)、钴(Ⅱ)、铜(Ⅱ)配合物的光谱特征

本文研究了氨基葡萄糖及羧甲基氨基葡萄糖分别与铁（Ⅱ）、锌（Ⅱ）、钴（Ⅱ）、铜（Ⅱ）形成配合物的UV，IR和^1H-NMR光谱特征。配合物紫外的λmax发生了明显紫移；在IR谱中，配合物的面外振动峰655cm^-1较未配位的氨基葡萄糖中的面外振动峰670cm^-1低，且在990cm^-1附近出现新的吸收峰；在^1H-NMR谱中，配合物C3上羟基中的质子化学位移较未配位的均移向高场，氨基上质子的化学位移较未配位的也移向高场，其他碳上羟基中的质子化学位移值不变，从而初步证实了配合物中的氨－金属（N－M）键的形成。本文还研究了羧甲基氨基葡萄糖及其与铁（Ⅱ）、钴（Ⅱ）、铜（Ⅱ）配合物的合成。其配合物的IR谱线较未配位的IR谱线并没增多，指出这种反常现象是糖环的刚性所致。它们的IR和UV光谱均证实了分子中不存在游离的羰基峰，并证实了它们分子中内盐的存在，配合物的IR谱中出现新的一组吸收峰：433.1和408.9cm^-1(O-Fe)，507．1和495．0cm^-1（O－Co),403.1和389.0cm^-1(O-Cu)，证实了配合物中的氧－金属键（O－M）的形成。     

配合物(PP)_2Cu和(PP)_3Fe的FT-Raman和FT-IR光谱研究(PP=2-(2-氧基-苯基)吡啶)

配合物（ＰＰ）２Ｃｕ和（ＰＰ）３Ｆｅ的ＦＴ┐Ｒａｍａｎ和ＦＴ┐ＩＲ光谱研究（ＰＰ＝２┐（２┐氧基┐苯基）吡啶）王悦姜世梅李艳芹（吉林大学超分子结构与谱学开放实验室长春１３００２１）ＦＴ┐ＲａｍａｎａｎｄＦＴ┐ＩＲＳｐｅｃｔｒａｏｆＣｕａｎｄＦｅＣｏｍ...     

Radiation Dosimetry of some New Dyes Containing 2-Thiohydantoin Nucleus

A number of 5-arylazo-2-thiohydantoins (Ia … e) were prepared. The structure of the prepared materials is established by means of correct analytical data, infrared and electronic absorption spectra. Then the materials were subjected to an absorbed energetic γ-ray dose (5.0 × 10⁷ rd). The infrared and electronic absorption spectra of each material were measured after γ-irradiation. Upon γ-irradiation a considerable change occurs. Furthermore a sequence for the relative stability of the different dyes against γ-irradiation was established.

Eine Anzahl von 5-arylazo-2-thiohydanloine (la … e) wurde synthetisiert und ihre Struktur neben der analytischen Zusammensetzung durch Infrarot- und Elektronenabsorptionsspektren gesichert. Diese Substanzen wurden einer energiereichen γ-Strahlung (5 · 10⁷ rad) unlerworfen und die IR- und UV/VIS-Speklren nach der γ-Bestrahlung wieder aufgenommen. Bei einigen Substanzen wurden bemerkenswerte Veränderungen beobachtet, andere zeigten gegenüber der γ-Strahlung eine relative Stabililät.     

Influence of γ-radiation on photoconductivity spectra of InSe monocrystals

The influences of γ-radiation with photon energy hν ～ 1.23 MeV on photoconductivity of layered InSe crystals have been studied. The photosensitivity is increased because of small doses of γ-radiation. It has been observed that γ-radiation makes the impurity peaks in the photoconductivity spectra disappear. This process is attributed to the phenomenon of irradiation annealing characterized by formation of the complexes including fine impurity centers and specific γ-radiation defects.     

吡喃酮类化合物与镱配合物的红外和拉曼光谱研究

采用非水体系中牺牲金属阳极的电化学方法分别合成了稀土金属镱与 3 羟基黄酮及 3 羟基 2 甲基 γ 吡喃酮的配合物。对配合物进行了IR和Raman光谱测定。两种光谱提供了互为补充的信息 ,配体经配位后—OH的伸缩振动谱峰消失 ,部分相关的谱峰频率发生了明显位移 ,特别是羰基伸缩振动红移十分明显 ,在Raman光谱的低波数区间检测到可指认为金属和配体键合的伸缩振动。根据这两种光谱的研究结果推断了所得配合物的可能结构。     

On the influence of free-carrier scattering mechanisms on semiconductor thin-film plasma spectra

IR plasma reflectivity spectra of semiconductor epitaxial layers on transparent substrates have been calculated by using a modified Drude dielectric function including a frequency-dependent relaxation rate of the form γ(ω) = γ₀+bω². Due to multiple reflections within the semiconductor film, weak structures in the bulk reflectivity spectra are enlarged in the film spectra. The sensitivity of the film reflectivity to variations of the relaxation rate is much larger than the bulk reflectivity for frequencies above the plasma edge and consequently this type of measurement is a very promising method for obtaining information about the scattering mechanisms of free carriers.     

Infrared Study of the Heating Effects of Ni,Cd and Co Complexes of Sulfadimethoxine

The Ni and new Cd and Co complexes of sulfadimethoxine (SDMX) are prepared and investigated their structural changes and stability by heating at different temperatures. The investigations were earned out by means of the infrared spectroscopy (IR) after heating the samples at several temperatures in the range 50-300 °C for an hour. The IR spectra of the heated samples at different temperatures have been compared with those at room temperature. The changes in the fundamental vibrational bands in their IR spectra gave the temperature values at which the samples decomposited. As a result, it is found that the stability of the complexes are higher than SDMX and their stability is in the order Ni > Co> Cd which depends on the second ionization potential of the metals.     

丙酮酸稀土配合物的红外光谱研究

研究了Ｙ,Ｌａ,Ｃｅ,Ｐｒ,Ｎｄ,Ｓｍ,Ｅｕ,Ｇｄ,Ｄｙ和Ｈｏ等１０种丙酮酸稀土配合物的ＦＴ－ＩＲ光谱;对４００～２０００ｃｍ＾－１的主要红外吸收谱峰进行了归属;２００～４－ｃｍ＾－１有３个随稀土原子序数递增峰位向高波数位移的谱带,可指认为ＲＥ－Ｏ伸缩振动吸收。红外光谱表明,丙酮酸以酸根形式采用螯合桥式三齿方式与稀土配位,某些谱峰有裂分或拓宽现象。配位键以离子键成分为主。     

铕镧苯甲酸α,α′-联吡啶配合物的合成及性质研究

在乙醇介质中合成了以Eu3+ 和La3+ 为中心体、苯甲酸和α ,α′ 联吡啶为配体的混合稀土配合物。测定了配合物的组成、研究了其紫外光谱和红外光谱。结果表明 ,配合物的组成为EuxLa1 -x(Dipy)L3·H2 O ,苯甲酸和α ,α′ 联吡啶的紫外吸收峰在配合物中分别位移了 2～ 9nm ;苯甲酸根羧基的反对称伸缩振动和对称伸缩振动在配合物中向低波数移动 ,而α ,α′ 联吡啶的CN振动则向高波数移动。这些事实表明 ,苯甲酸和α ,α′ 联吡啶与稀土离子配位。荧光测试表明 ,用不发光的镧离子取代该系列配合物中部分铕离子 ,在一定范围内 ,可以提高三价铕的特征荧光发射强度。这一结果也表明 ,在该系列配合物中 ,不仅配体可以将吸收的能量传递给发光的铕离子 ,使其发光 ,而且不发光的镧配合物也可将其吸收的能量通过分子内能量传递给铕离子 ,增强铕的发光强度。     

Structural Study of Lanthanide Complexes Formed with o-Vanillin Salicyloylhydrazone and o-Vanillin Paraanisidine

Abstract

Ten lanthanide complexes (Ln=La, Ce, Pr, Nd, Sm, Gd, Eu and Dy) with the title ligands have been synthesised and characterised. The structure of these complexes are assigned on the basis of IR spectra, magnetic and thermal analysis data. The IR spectra indicate that o-vanillin paraanisidine (oVPA) is a bidentate ligand coordinating through azomethine N and phenolic O whereas o-vanillin salicyloylhydrazone (oVSH) is tridentate possessing ketonic O as an additional donor site. Involvement of anions (Cl^?, Ac^?) in coordination is explored. Electronic spectra indicate weak covalent nature of metal ligand bond and various parameters β, b½, η and δ have been evaluated.     

稀土与对硝基苯乙酸配合物的合成、表征及荧光性质

本文合成了三种稀土与对硝基苯乙酸 (HL)的二元固体配合物 ,通过元素分析等手段确定了其配合物的组成为ReL3·H2 O(Re=Eu ,Sm ,Tb)。用红外光谱、紫外光谱、荧光光谱对该类配合物的结构与性质进行了表征。红外谱表明配体以—COO- 形式与中心离子配位 ,同时这一点也被自由配体和配合物的UV谱所证实。EuL3·H2 O的强红色荧光分属于Eu3+ 的 5D0 → 7F1 和5D0 → 7F2 跃迁。     

铕、铽-2-噻吩甲酸-2,2'-联吡啶配合物的合成、表征及荧光性质研究

合成了铕、铽-2-噻吩甲酸的二元配合物和铕、铽-2-噻吩甲酸-2,2'-联吡啶的三元配合物,并对它们进行了元素分析、稀土络合滴定、摩尔电导测定,确定了配合物组成分别为REL3·2H2O及REL3 L'·C2H5OH(RE=Eu,Tb;L=2-噻吩甲酸、L'=2,2'-联吡啶),测定了配体及配合物的IR谱、1H NMR谱及荧光光谱.IR谱和1H NMR谱测定表明,配体2-噻吩甲酸羧基氧、配体邻菲咯啉2个氮原子与稀土离子配位.荧光光谱实验表明,高氯酸铕和高氯酸铽分别与2,2'-联吡啶和2-噻吩甲酸反应形成的三元配合物的荧光明显强于二元配合物.     

苯氧乙酸、邻菲啰啉铽-钇配合物的合成、表征及荧光性能(英文)

以苯氧乙酸和邻菲啰啉为配体,不同比例铽钇为中心,在无水乙醇中合成了一系列铽掺钇配合物?素分析和稀土络合滴定推测配合物的组成为TbxY1-x(POA)3phen·1/2H2O(POA-=C6H5OCH2COO-,x=1.0,0.9,0.8,0.7,0.6,0.5,0.4,0.3,0.2,0.1)。红外光谱测试表明,苯氧乙酸的羧基氧及苯氧基氧与稀土离子配位。邻菲啰啉的两个氮原子也与稀土离子配位;热分析表明:该系列配合物在274℃附近失去配位水,温度高于576℃发生氧化分解。荧光光谱测试结果表明:该系列配合物都可发出较强的特征荧光,在一定比例范围内,钇可以增强铽的发光,组成为配合物Tb0.7Y0.3(POA)3phen·1/2H2O荧光最强;荧光寿命与荧光强度变化一致。     

A comparative analysis of infra-red luminescence spectra of ZnSe crystals doped with Yb,Gd or Cr impurities

Infra-red (IR) photoluminescence (PL) spectra of ZnSe crystals doped with Yb, Gd rare-earth impurities and Cr impurity are investigated. The influence of stoichiometric deviation on the spectra is studied and the structure of complex IR PL bands is analysed. The good coincidence between the structures of IR PL spectra of the samples doped with Yb, Gd, and Cr is shown. Correlation between the component parts of the bands at 1 and 2 μm is found and possibility to control the composition of IR PL spectra by enrichment of the samples with Zn or Se is discussed. The models that explain the formation of complexes based on rare-earth and background Cr and Cu impurities, responsible for IR PL bands, are proposed. Keywords: IR luminescence, ZnSe, Rare-earth impurities, Cr impurity.     

稀土乙酰丙酮苯并咪唑三元配合物合成和荧光性质研究

用稀土氯化物与乙酰丙酮及苯并咪唑在 95 %乙醇溶液中反应 ,合成了 6个稀土 (L a3 +、Sm3 +、Eu3 +、Tb3 + 、Dy3 + 、Y3 + )乙酰丙酮苯并咪唑三元配合物。用红外光谱和紫外光谱表征了配合物并对其荧光性质进行了研究。结果表明 ,Sm、Eu、Tb和 Dy的配合物能发出中心离子的特征荧光 ,发光强度顺序为 Tb>Dy>Sm>Eu