化学化工文献检索.doc

化学化工文献检索 1、 OLED 最新发展Inkjet Printed Polymer on Flexible Substrate OLED ApplicationsFulvia Villani , Paolo Vacca , Guiseppe Nenna ,Olga Valentino , Gianabttista Burrasca,Tommaso Fasolino ,Garla Minarini and Dario della SalaEnea Centro Ricerche Portici ,piazzale Enrico Fermi 1 ,80055 Portici(NA),ItalyJ.Phys.Chem.C ,2009 ,113(30) ,pp 13398-13402DOI:10.1021/jp8095538Publication Date(Web):July 7,2009Copyright 2009 American Chemical Society*Corresponding author ,Fulvia Villani ,CR ENEA Portici ,piazzale E.Fermi 1 ,80055 Portici(NA),Italy,tel .+39 081 7723344.Abstract In optoelectronics, inkjet printing (IJP) technology is being developed as an alternative to the traditional techniques for organic materials deposition. In this work, we report the fabrication of organic light-emitting diodes (OLEDs) on the flexible substrate by studying the effect of a surface chemical treatment on the inkjet printed polymer film morphology. The employed piranha treatment increases the substrate surface energy and improves the wettability, thus inducing a decrease in the IJ printed drop thickness. The IJ printed polymer (poly(9,9-dihexyl-9H-fluorene-2,7-diyl) is the hole-transporting layer (HTL) of a hybrid structure in which the other layers are deposited by vacuum thermal evaporation. Furthermore, in order to determine the effect of the IJ deposition method on the manufactured OLED performances, we compare them to those of devices fabricated using standard technologies. With this aim, OLEDs with the same structure are fabricated by replacing the IJ printed polymer with a spin-coated film employing the same polymer solution. The electrical and optical properties of the electroluminescent devices are investigated and discussed. Despite the lack of thickness uniformity in IJ printed film, which is an intrinsic, technological limit, OLEDs with IJ printed HTL show electro-optical characteristics that are similar to the ones of OLEDs with spin-coated HTL.译文：喷墨印刷聚合物在OLED柔性底层的应用在光电子学中，喷墨印刷（IJP）技术已经发展成为替代传统有机材料沉积技术的一种新型技术。在这项工作中，我们通过研究对喷墨印刷聚合物薄膜形态表面化学处理的效果，报告了韧性底层上有机发光二极管（OLEDs）的构成。 的处理不仅增加了底层的表面能，也提高了它的可湿性，从而诱发了喷墨印刷层厚度的减少。喷墨印刷聚合物（聚（9，9-二己烷）是一种混合结构的空穴传输层（HTL），此结构的其他层面都由于真空热蒸发作用而被沉积。此外，为了测定喷墨沉积的方法对生产的OLED性能的影响，我们用标准技术比较了其与原来制造的设备。以此为目的，具有相同结构的OLED都被改造为将采用相同聚合物溶液的旋涂薄膜代替喷墨印刷聚合物的新结构。电致发光器件的光学和电学的性质都已经研究探讨。尽管在喷墨印刷层中缺少统一的薄层厚度，这是内在的，技术性的限制，具有喷墨印刷空穴传输层的OLED在光电特性上与具有旋涂空穴运输的OLED是相同的。Highly Efficient Color-Tunable OLED Based on Poly(9,9dioctylfluorene) Doped with a Novel Europium ComplexUmberto Giovanella ,Mariacecilia Pasini ,Christelle Freund ,Chiara Botta ,William Porzio and Silvia Destri Istituto per lo Studio delle Macromolecole ,CNR Via Bassini 15,20133 Milano ,Italy ,and Polo scientifico e tecnologico del CNR,via Fantoli 16,20138 Milano ,Italy J.Phys. Chem.C ,2009,113(6),pp 2290-2295 DOI:10.1012/jp809088n Publication Date (Web):January 21,2009 Copyright 2009 American Chemical Society *Corresponding author,r.it Abstract Tunable dichromic electroluminescence is obtained from a blend of Eu3+ complex in polyfluorene by a single spin-coatable emitting layer device with external quantum efficiency as high as 1%, the highest reported in literature to our knowledge. The design of a complex whose ligand increases the site isolation of Eu3+ ion allows reduction of the back-transfer quenching effects that prevented up to now the multicolor electroluminescence of Eu3+ complex/polyfluorene blends. Energy transfer mechanisms involving singlet and triplet excitons are analyzed by focusing on the effects of site isolation and polarity of the new ligand that provide homogeneous dispersion of the complex in the conjugated polymer.译文：基于聚（9，9-辛基芴）的一种新型掺杂铕的复合物的高效颜色可调OLED 可调重铬酸电致发光是由一种含Eu3+复合体与聚芴的混合物在外部量子效率高达1%（已知文献中所报道的最高效率）的单层旋涂发光层设备上产生的。配合物能够增加Eu3+离子间的隔离的混合物的设计，可以减小背部猝火效应，从而可以阻止目前为止Eu3+复合体/聚芴混合物的多色电致发光。以粒子间间隔的效果和新型配合物的极性为重点，我们对涉及单态和三重激子的能量转移机制进行了分析，从而提供了共轭聚合物中复合体的均匀分散。2、 自主装电致发光材料Ligand Methylation and Coordination Geometry Effects on the Properties of Zinc and Lithium(8-Quinolinolato) Chelate Electroluminescent MaterialsLinda S.Sapochak, Flocerfida L. Endrino, Jeffrey B. Marshall, Daniel P. Fogarty, Nancy M. Washton, Sanjini Nanayakkara Department of Chemistry ,University of Nevada ,4505 Maryland Parkway ,Las Vegas ,NV 89154-4003 Chapter 13,pp 171-186 Chapter DOI:10.1021/bk-2003-0844.ch013 ACS Symposium Series ,Vol.844 ISBN 13:9780841237827eISBN:9780841219472 Publication Date (Print): February 20, 2003 Copyright 2003 American Chemical SocietyAbstractWe present a study of the photophysical (absorption and emission) and thermal stability properties of zinc bis(8-quinolinolato) (Znq2), lithium mono(8-quinolinolato) (Liq) chelates, and their methylated derivatives. These materials are compared with aluminum tris(8-quinolinolato) (Alq3), which has proven to be viable for use in organic light-emitting devices (OLEDs). We show that regardless of metal ion substitution the effect of ligand methylation on the photophysical and thermal properties is similar for all Mqn materials. However, strong solvent dependence of absorption, emission and 1H NMR chemical shifts for zinc and lithium chelates support a stronger ionic character of the metal-ligand bonding, which may have significant effects on electroluminescent properties.译文：配体的甲基化和调和几何作用对锌，锂（8-羟基喹啉）螯合物电致发光材料性能的影响本文介绍了对光物理（光吸收和发射）的研究和锌-二（8-羟基喹啉）（Znq3），锂-（8-羟基喹啉）（Liq）螯合物以及它们的甲基化衍生物的热稳定性。将这些材料与铝-三（8-羟基喹啉）作比较，而铝-三（8-羟基喹啉）已经被证明可用于有机电致发光器材（OLED）。我们已经证明了无论是何种金属离子参加取代作用，配体的甲基化对所有Mqn型材料的光物理性质与热稳定性的影响都是相似的。然而，锌和锂的螯合物的吸收，排放，核磁共振和化学位移对溶剂的强依赖性支持较强的金属离子性配体结合，可能对发光性能的重大影响。Chromophore-Labeled Quinoxaline Derivatives as Efficient Electroluminescent MaterialsK. R. Justin Thomas, Marappan Velusamy,Jiann T. Lin, Chang-Hao Chuen,and Yu-Tai Tao Institute of Chemistry, Academia Sinica, 115 Nankang, Taipei, Taiwan, and Department of Chemistry, National Central University, 320 Chungli, Taiwan Chem.Mater.,2005, 17 (7), pp 18601866 DOI:10.1021/cm047705a Publication Date (Web): March 5, 2005 Copyright 2005 American Chemical Society Academia Sinica To whom correspondence should be addressed. Fax: 886-2-27831237. National Central University.Abstract Electroluminescent materials comprising quinoxaline, triarylamine, and fluorophores such as carbazole, pyrene, and fluorene were prepared by using a key step involving a Pd-catalyzed CN coupling reaction. Chromophores were embedded both at quinoxaline and triarylamine units, and their influence on photophysical and thermal properties was investigated. Quinoxalines possessing more electron-donating amines exhibit lower fluorescence quantum efficiency and the photoluminescence (PL) is severely affected by the polarity of the solvent used for measurement. Bulky and rigid aromatic groups such as pyrene and carbazole enhance the glass transition temperature of the derivatives. Oxidation potential of the triarylamine was easily tuned by the aromatic substituents while retaining the reduction potential of the quinoxaline segment. This provides us a method for tuning the photophysical and thermal properties maintaining the energy levels of the dipolar compounds. The electroluminescent devices fabricated using these materials as hole-transporters and emitters led to intense light emission. The emission color is green and corresponds well with the film PL of the material used.译文：标记生色团的喹喔啉衍生物作为高效电致发光材料 电致发光材料包括喹喔啉、三芳胺和荧光团如咔唑，芘，芴等等，它们的制备都要经过一步关键反应，其中都涉及钯催化的C - N的偶联反应。生色团都被嵌入在喹和三芳胺的单位，以此来研究它们对光物理和热性能的影响。拥有较多的电子基胺的喹喔啉有较低的荧光量子效率，同时，发光（PL）受到用于测量的溶剂的极性的极大影响。大分子芳香族化合物如芘，咔唑会提高衍生物的玻璃化转变温度。三芳胺的氧化能很容易在保留喹喔啉部分的还原电位的同时被芳香基团调整。这为我们提供了在保持偶极化合物的能量水平的同时调整光物理和热性能的方法。以此为空穴运输材料和发射器所制造的电致发光器件会产生强的发射光。发射的光是绿色的并且很好地符合了所用材料的薄膜发光颜色。Amorphous 2,3-Substituted Thiophenes: Potential Electroluminescent MaterialsYi Zhen Su ,Jiann T. Lin ,Yu-Tai Tao ,Chung-Wen Ko ,Su-Ching Lin ,and Shih-Sheng Sun Institute of Chemistry, Academia Sinica, Taipei, Taiwan 115, Republic of China, and Department of Chemistry, National Central University, Chungli, Taiwan 320, Republic of China Chem.Mater., 2002, 14(4), pp 18841890 DOI:10.1021/cm011671e Publication Date (Web): March 27, 2002 Copyright 2002 American Chemical Society Academia Sinica. Corresponding author: Fax Int cod + (2)27831237; e-mail .tw. National Central University. Present address: Department of Chemistry, State University of New York at Binghamton, NY, 13902-6016.AbstractAmorphous2,3-disubstituted thiophenes and 2,3,5-trisubstituted thiophenes which contain two and four peripheral triarylamine moieties, respectively, have been synthesized and characterized. The compounds are weakly to moderately fluorescent with a lifetime of 1 ns. Double-layer devices were fabricated using 2,3-bis5-4 -(diphenylamino)phenyl-2-thienylthiophene (10) or 2,3-bis4-4(1-naphthyl)(phenyl)amino)-p-biphenylthiophene (12) as hole-transport as well as emitting materials. Both green light-emitting device ITO/10/TPBI (or Alq3)/Mg:Ag (TPBI = (1,3,5-tris(N-phenylbenzimidazol-2-yl)benzene); Alq3 = tris(8-hydroxyquinolinato)aluminum) and blue light-emitting device ITO/12/TPBI/Mg:Ag exhibit promising physical performance.译文：无定形 2,3 -取代噻吩：具有潜能的电致发光材料包含两个和四个周边三苯胺基团的无定形 2,3 -二取代噻吩和2,3,5三取代噻吩，分别被合成和表征。这种复合物是中弱性荧光化合物，只有1纳秒寿命的。双层器件通过采用2,3 -二（5 - 4 - （二苯胺基）苯基 -2-噻吩）噻吩（10）或2,3 -二（4 - 4（ 1 -萘基）（苯基）氨基）-对联苯噻吩（12），被制造为空穴运输以及发光材料。无论是绿发光器件ITO/10/TPBI（或Alq3）/镁：银（TPBI =（1,3,5 -三（正-苯基咪唑 - 2 -基）苯）;Alq3=（8 -羟基喹啉）铝）还是蓝色发光器件ITO/12/TPBI/Mg：银的都展现出的其物理性能的前景。3、 草甘瞵性能与制备研究 GlyphosateAnne Louise Gimsing1 ,Afonso Maria dos Santos2 1 Department of Natural Sciences ,The Royal Vetetinary and Agricultural Universiity ,Thorvaldsensvej 40,1871 Frederiksberg C.,Denmark 2 INQUMAE and Departmento de Qumica Inorgnica, Analtica y Qumica Fsica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabelln II 3er Piso, C1428EHA Buenos Aires, Argentina Chapter 16 ,pp 263-277 Chapter DOI:10.1021/bk-2005-0910.ch016 ACS Symposium Series ,Vol.910 ISBN13:9780841238978eISBN:9780841220287 Publication Date(Print):July 21,2005 Copyright 2005 American Chemical SocietyAbstractThe herbicide glyphosate (N-phosphonomethylglycine) interacts strongly with many soil components. It forms strong complexes with many metals in solution, and it is adsorbed through innersphere complexation to iron- and aluminium oxides. Glyphosate can also be adsorbed by clay minerals by forming complexes with interlayer cations. Because of these interactions, glyphosate is strongly adsorbed in soils. It is mainly the phosphonic acid moiety that participates in the adsorption, and therefore phosphate competes with glyphosate for adsorption sites.译文：草甘膦除草剂草甘膦（正-膦羧甲基甘氨酸）与许多土壤成分有强烈的相互作用。它在土壤中能够与许多金属形成配合物，并且通过内部球形络合作用被铁和铝的氧化物吸收。草甘膦也可以通过与间层阳离子形成络合物从而被黏土矿物质所吸收。由于这些相互作用，草甘膦强烈地吸附在土壤中。因为主要是磷酸部分参与吸附作用，所以磷肥化合物会与草甘膦竞争吸附作用点。Effects of Surface Sorption on Microbial Degradation of GlyphosateYlva Schnrer ,Per Persson , Mats Nilsson ,Anders Nordgren ,and Reiner Giesler Department of Forest Ecology, Swedish University of Agricultural Sciences, 901 87 Ume, Sweden, Department of Chemistry, Aquatic Chemistry, Ume University, 901 87 Ume, Sweden, and Climate Impact Research Centre, Department of Ecology and Environmental Science, Ume University, Box 62, 981 07 Abisko, Sweden Envir.Sci.Technol.,2006,40(13),pp 4145-4150 DOI:10.1021/es0523744 Copyright 2006 American Chemical Society Department of Forest Ecology, Swedish University of Agricultural Sciences. Department of Chemistry, Aquatic Chemistry, Ume University. Climate Impact Research Centre, Department of Ecology and Environmental Science, Ume University.AbstractSorption may affect the bioavailability and biodegradation of pesticides in soils. The aim of this study was to test the effect of surface sorption on microbial utilization of the herbicide glyphosate as a source of phosphorus, nitrogen, or carbon. We added goethite to a humus soil to manipulate the soils glyphosate sorption capacity. The addition of glyphosate generally either decreased microbial CO2 production or produced no effect. Additions of glyphosate, in combination with glucose and N, did not change the respiration rate in comparison with the same treatment but without glyphosate. In contrast, glyphosate additions combined with glucose and P decreased microbial growth, whereas the combination with