稀土铽配合物的有机发光二极管

有机小分子和有机高分子的发光二极管在可见光区内有非常高的量子效率，因而受到人们的高度重视．采用二胶（TPD），8羟基喹啉铝（Alq3）等有机小分子作为空穴和电子输运层所作的发光二极管[1]的量子效率可达10％，采用聚对苯乙炔（PPV）高分子聚合物作空穴输运层，有机小分子2     

表面固载的蛋白质对银纳米粒子的吸附及蛋白质固载的可视化检测

银纳米粒子有强烈的等离子体共振散射特性,可作为光散射光谱探针用于示踪和可视化分析.通过研究固载于载玻片上的蛋白质对银纳米粒子的吸附,发现吸附在载玻片上的银纳米粒子在普通的白光发光二极管（LED）照射下,肉眼就能看见其散射光.据此建立可视化检测蛋白质在载玻片上最小完全固载量的方法.     

在线标准加入法在微波等离子体炬原子发射光谱法中的应用

在线标准加入法在微波等离子体炬原子发射光谱法中的应用叶冬梅，张寒琦，于惊雷，金钦汉（吉林大学化学系，长春，１３００２３）关键词在线标准加入法，微波等离子体炬，原子发射光谱法微波等离子体炬（ＭＰＴ）是新发展起来的激发光源［１，２］，由于它具有利于样品引...     

高强聚乙烯纤维的冷等离子体改进

高强聚乙烯纤维的冷等离子体改进金士九，倪亦斌，张佐光（中国科学院化学研究所北京１０００８０）（北京航空航天大学北京）关键词　高强聚乙烯纤维，等离子体，表面改性，界面性能由高强聚乙烯纤维制成的复合材料抗高速撞击（抗弹）性能远远优于芳纶纤维，广泛用作各种...     

有机多层白光发光二极管

有机多层白光发光二极管贝尔实验室的Ｄｏｄａｂａｌａｐｕｒ等人报道了一种新型的有机多层白光发光二极管。他们利用８－羟基喹啉铝（ＡｌＱ）作为绿光发光层，ＤＣＭ１作为红光发光染料，并合成了系列新的三芳基取代的ｏｘａｚｏｌｅ型蓝光发光染料，经过ＴＰＤ／ｏｘａ...     

等离子体引发甲基丙烯酸缩水甘油酯在聚丙烯膜上的接枝反应及肝素的固定化

等离子体引发甲基丙烯酸缩水甘油酯在聚丙烯膜上的接枝反应及肝素的固定化李刚孙求实後晓淮（中国科学院化学研究所北京１０００８０）关键词甲基丙烯酸缩水甘油酯，肝素，等离子体，等离子体引发接枝聚合利用等离子体表面处理能使高分子材料表面生成自由基，这已被许多...     

等离子体光谱法同时测定羟基磷灰石中的As,Hg方法研究

等离子体光谱法同时测定羟基磷灰石中的Ａｓ、Ｈｇ方法研究胡明芬童式国（四川大学分析测试中心成都６１００６４）关键词砷汞等离子体光谱法氢化物发生羟基磷灰石［Ｃａ５（ＰＯ４）３（ＯＨ），简称ＨＡ］是一种优良的生物活性材料，在医学上主要是制备各种人工骨制品，...     

等离子体基低能离子注入的光谱诊断

采用发射光谱（ＯＥＳ）技术系统地研究了电子回旋共振（ＥＣＲ）微波等离子体基低能离子注入的等离子体特性。结果表明：纯氮气形成的等离子体中的活性粒子主要是Ｎ２和Ｎ＋２，等离子体中电子与气体分子碰撞使Ｎ２产生激发和电离，而使Ｎ２离解的作用很小；氮氩混合气形成的等离子体中，随着氩气分压的增加，Ｎ２和Ｎ＋２的浓度降低，同时氩气对氮分子离解的贡献很小；直接施加于试样的脉冲负偏压对等离子体特性没有明显影响，但存在着一定的溅射作用。     

可溶性聚合物电致发光材料PDHPV的合成及单、双层发光二极管器件的发光性能比较

可溶性聚合物电致发光材料ＰＤＨＰＶ的合成及单、双层发光二极管器件的发光性能比较李晨曦，尹春，黄文强，印寿根，张会旗，何炳林，郑军，华玉林（南开大学高分子化学研究所，天津，３０００７１）（天津理工学院材料物理研究所）关键词ＰＤＨＰＶ共轭聚合物；电致发光...     

低温等离子体应用于甲烷的直接转化

简述了热等离子体裂解甲烷和冷等离子体强化甲烷转化的研究概况，着重从四个方面（反应机理和动力学、反应器的设计、等离子体与催化剂的协同作用、常压冷等离子体）评述了冷等离子体强化甲烷转化的国内外研究进展和发展趋势。     

White and Red Organic Light Emitting Materials

Derivatives of 2,3-(1,4-dialkoxyaceno)norbornadiene underwent ring-opening metathesis polymerization (ROMP) upon the catalysis of a ruthenium complex to afford the corresponding polymers. The polymeric materials containing anthracene chromophores emit white electro-luminescence, which can be fabricated into light-emitting diodes (LED). The broad emission band is composed of a blue emission from anthracene and a red emission from aggregates. A single layer device, ITO/polymer/Ca/Al, can be turned on at 7V and exhibits maximum intensity 427 cd/m2 at 15 V. A double layer device, ITO/polymer/TPBI/Mg:Ag (TPBI = (2,2′,2"-(1,3,5-benzenetriyl)-tris(1-phenyl-1H-benzimidazole)) displayed blue light with turn-on voltage 6 V and maximal intensity 930 cd/m2 at 15 V.Derivatives of bisindolylmaleimide were found to form amorphous solid films which exhibit intensive red luminescence. The property of forming glasses can be ascribed to the nonplanar geometry of these molecules. LED devices were fabricated by a layer of pure dye sandwiched between two charge transporting films. The yellow emission spectrum of the devices utilizing Alq (tris(8-hydoxyquinolinato)aluminum) contains a green component from Alq. Pure red emissions can be achieved by replacing Alq with TPBI. Typical devices can be turned on at ～3 V with maximal intensity 2000 cd/m2. White color devices are under current investigation, in which the green Alq layer is replaced by its blue derivative (bis(2-methyl-8-hydoxyquinolinato)(phenolato)aluminum).     

给体-受体-给体窄带隙染料掺杂聚芴发光二极管

合成了一系列给体-受体-给体型窄带隙荧光分子, 并将其作为掺杂剂与主体(Host)宽带隙聚芴共混制备发光二极管. 荧光分子为4,7-二呋喃-苯并噻二唑(O-S)、4,7-二噻吩-苯并噻二唑(S-S)、4,7-二(N-甲基吡咯)-苯并噻二唑(N-S)、4,7-二硒吩-苯并噻二唑(Se-S)和4,7-二(N-甲基吡咯)-苯并硒二唑(N-Se). 溶液中荧光分子的紫外-可见吸收峰位于447~472 nm, 荧光发射峰位于563~637 nm. 该系列荧光分子掺杂聚芴(PFO)发光器件的电致发光峰位于580~633 nm. 当器件结构为ITO/PEDOT/PVK/PFO+N-Se/Ba/Al时, 最大外量子效率为1.28%, 电流效率1.31 cd/A.     

Light Emitting Materials and Devices of PPV Type Compounds Containing Quinolines

Five derivatives of 1,4‐bis(2′‐quinolinylethenyl)benzene were prepared through Wittig reaction of a diylide of p‐xylene and two molar equivalents of quinolinyl carbaldehyde. Dyes 1a,b and 2a‐c thus obtained exhibit fluorescence in quantum yields of 0.44–0.78. They are fabricated to light‐emitting diodes in the form of ITO/NPB/CBP/TPBI: dye(5% wt)/Mg: Ag. The devices can be turned on at 6 V, and they displayed blue and green light at intensities up to 5000 cd/m² at 15 V. The compounds containing methoxy substituents, i.e. 1b and 2b,c , performed more effectively than those without, i.e. 1a and 2a . The former derivatives also showed a red‐shift in their emission spectra with respect to the latter.     

绿色单峰发光聚(9,9-二烯丙基芴)的合成及其发光机制

为了得到绿色单峰发光的聚合物材料, 我们设计并合成了9位取代的二烯丙基芴单体, 在NiCl₂的催化下, 合成了可溶的聚芴衍生物, 聚(9,9-二烯丙基芴)(PAF). 较短的烯丙基链既可以增加聚芴的溶解度, 双键的存在又有利于聚芴发生分子间聚集而得到绿光发射的有机电致发光器件(OLED). PAF在溶液和薄膜状态下的荧光峰分别位于403和456 nm的蓝光区域, 而其器件ITO/PEDOT:PSS/PAF/LiF/Al(其中, ITO为氧化铟锡, PEDOT为聚(3,4-乙撑二氧噻吩), PSS为聚苯乙烯磺酸盐)的电致发光峰却红移至绿光区域(532 nm), 得到绿色单峰发光. 紫外吸收光谱、荧光发射光谱、红外光谱以及原子力显微镜(AFM)图像的结果证明, 造成PAF电致发绿光的机制为聚合物分子间聚集.     

微接触印刷技术在ITO基底上快速转移Au纳米粒子图案

采用无氰化学镀金法在聚二甲基硅氧烷(PDMS)印章表面镀金, 通过微接触印刷技术将PDMS印章上的Au 纳米粒子(AuNPs)分别转移到氧化铟锡(ITO)透明导电膜玻璃, 修饰了(3-巯基丙基)三甲氧基硅烷(MPTMS)的ITO基底(MPTMS/ITO)和表面电镀了铜膜的ITO(Cu/ITO)表面上, 同时形成有序的结构或者图案.通过场发射扫描电镜(FE-SEM), 原子力显微镜(AFM)和显微共聚焦激光拉曼光谱仪等对实验结果进行表征.结果表明, 该转移AuNPs的方法对基底表面特性并无特殊要求, 是一种简单、快速、无污染、低成本的AuNPs转移技术, 而且转移了AuNPs的ITO基底具有表面增强拉曼光谱(SERS)活性, 有望在SERS中有所应用.     

Preparation of Indium Tin Oxide Nanoparticle‐modified 3‐Aminopropyltrimethoxysilane‐functionalized Indium Tin Oxide Electrode for Electrochemical Sulfide Detection

A sulfide sensor based on an indium tin oxide nanoparticle (ITONP)‐modified ITO electrode was developed. To prepare ITONP‐modified ITO, various methods were tested. Drop‐drying of ITONPs (aq.) on aminopropyltrimethoxysilane‐functionalized ITO (APTMS/ITO) was found to be the best method on the basis of voltammetric analysis of the sulfide ion. ITONP‐modified APTMS/ITO (ITONP/APTMS/ITO) yielded much better electrocatalytic properties toward sulfide electro‐οxidation than did bare or APTMS/ITO electrodes. The ITONPs and ITONP‐modified ITO were also characterized using transmission electron microscopy and field emission scanning electron microscopy, respectively. Optimization of the type of inert electrolyte and pH yielded an ITONP/APTMS/ITO detector whose amperometrically and chronocoulοmetrically determined limits of detection for sulfide were 3.0 μM and 0.90 μM, respectively. ITONP/APTMS/ITO electrodes displayed reproducible performance, were highly stable, and were not susceptible to interference by common contaminants. Thus, the developed electrode can be considered as a promising tool for sensing sulfide.     

A Novel White Light Emitting Long-lasting Phosphor

A novel white light emitting long-lasting phosphor Cd1-xDyxSiO3 is reported in this letterThe Dy^3 doped CdSiO3 phosphor emits white light. The phosphorescence can be seen with the naked eye in the dark clearly even after the 254nm UV irradiation have been removed for about 30min. In the emission spectrum of 5% Dy^3 doped CdSiO3 phosphor, there are two emission peaks of Dy^3 , 580nm (^4F9/2→^6H13/2) and 486nm (^4F9/2→^6H15/2), as well as a broad band emission located at about 410nm. All the three emissions form a white light with CIE chromaticity coordinates x=0.3874, y=0.3760 and the color temperature is 4000 K under 254 nm excitation. It indicated that this phosphor is a promising new luminescent material for practice application.     

Polarized electroluminescence of a discotic mesogenic compound

Polarized electroluminescence is observed for a uniaxially aligned sample of a discotic compound in its crystalline state. The alignment was achieved by coating the ITO anode with an aligned film of poly(tetrafluoroethylene) (PTFE) deposited using the friction method. Organic light emitting devices with the layer sequence glass/ITO/PTFE/tetraethyl perylene-3,4,9,10-tetracarboxylate (55 nm)/aluminium (100 nm) show linearly polarized emission of light with a dichroic ratio up to 3.2.     

Influence of Electrical,Chemical and Morphological Properties of Inorganic/Organic Interface on Light Emitting Devices Performance

studies on the influence of chemical and physical treatments on the properties of indium–tin oxide (ITO) thin films are reported. The ITO films are utilized as transparent anodes of organic light-emitting diodes (OLEDs) incorporating poly(9,9-dihexyl-9H-fluorene-2,7-diyl) (PF6) as the hole transporter material and 8-hydroxyquinoline aluminum salt (Alq3) as emitter material. Chemical (HCl, piranha solutions), thermal (vacuum annealing), physical treatments (oxygen plasma, UV ozone) and combined treatments are studied. First, ITO layers with different treatments are characterized by using four point probe method, contact angle measurement, X-Ray diffraction (XRD), surface profilometer, scanning electron microscopy (SEM), UV-Vis-IR transmittance. Later, electrical and optical properties of OLEDs with treated ITO as anode are extensively investigated.     

Preparation of a Novel NH2 + Ion Implantation Modified Electrode and Its Study of the Electrochemical Behavior of Hemoglobin

Abstract

A novel functional electrode was obtained by implanting NH₂ ⁺ into ITO film (NH₂/ITO) for the first time. The NH₂/ITO surface showed a better affinity to gold nanoparticles than bare ITO. Gold nanoparticles were deposited on the surface of NH₂/ITO electrode (Au/NH₂/ITO). The Au/NH₂/ITO and NH₂/ITO electrodes were used to observe the electrochemical behavior of Hemoglobin (Hb) immobilized on the electrodes surfaces. The peak current value of Hb immobilized on NH₂/ITO increased compared with on bare ITO while peak current value of Hb immobilized on Au/NH₂/ITO increased compared with on Au/ITO. Linkage between the ‐NH₂ implanted into the ITO film and the ‐COOH of Hb was thought to be the reason for the increase of active Hb coverage on NH₂/ITO compared with bare ITO. Increase of active Hb coverage on Au/NH₂/ITO compare with Au/ITO was attributed to the different amount of gold nanoparticles deposited. Results showed the novel NH₂/ITO and Au/NH₂/ITO electrodes exhibited good stability, reproducibility besides selectivity and sensitivity. The electrode process of Hb immobilized on Au/NH₂/ITO was quasi‐reversible with adsorption. The electrode reaction rate constant k_s and other related constants were determined. X‐ray photoelectron spectroscopy (XPS), field‐emission scanning electron microscopy (FE‐SEM), and impedance spectra were used to characterize the different surfaces.