新型有机红色发光材料的设计、合成及在有机电致发光器件中的应用

有机电致发光器件（Organic Light—Emitting Diodes，OLEDs）具有直流电压驱动、主动发光、体积小、无视角限制、响应快，以及色彩全、制作工艺简单等优点，作为新型显示技术倍受瞩目．     

基于联咔唑为骨架的双极主体材料的合成及其在有机电致发光器件中的应用

咔唑类衍生物具有良好的空穴传输性能和较高的三重态能级,在有机电致发光器件中一般用来构建空穴传输材料和主体材料。本文通过在联咔唑的3和6位引入具有电子传输能力的氰基,设计合成了一种以双咔唑二聚体为分子骨架的新型双极性有机电致发光主体材料6,6′-双氰基-9,9′-二苯基-3,3′-联咔唑(BCzDCN),研究了其发光性能、热稳定性和电化学性质。低温磷光发射光谱测试表明BCzDCN的三重态能级高于传统的天蓝色磷光掺杂材料双(4,6-二氟苯基吡啶-N,C2′)吡啶甲酰合铱(FIrpic)。以BCzDCN为主体材料,FIrpic和双(4-苯并噻吩[3,2-C])吡啶-N,C2′)乙酰丙酮合铱(PO-01)分别为蓝色和黄色磷光掺杂材料,制备了蓝色和白色有机磷光发光二极管器件。器件的最大电流效率分别达到34.6cd/A和59.0cd/A。并且在1000cd/m2亮度下的效率滚降仅有4.1%和5.1%。     

有机小分子电致发光材料及器件的研究进展

综述了以有机小分子发光材料为基础的红绿蓝和白光有机发光二极管的结构、发光性质,简要介绍了其应用前景和发展趋势。     

分子型有机空穴传输材料和红色发光材料的设计合成、物化性质及在有机电致发光器件中的应用

有机电致发光器件具有直流电压驱动、主动发光、体积小、无视角限制、响应快 ,以及色彩全、制作工艺简单等优点 ,作为新型显示技术而倍受瞩目 .在构建有机电致发光器件的三大材料中 (空穴传输材料、电子传输材料和发光材料 ) ,空穴传输材料的玻璃化温度(Tg)以及红色发光材料的色纯度和发光效率亟待改进 .本论文通过对分子进行合适的裁剪与修饰 ,设计合成了具有良好应用前景的空穴传输材料和红色发光材料 ,研究了化合物的物化性质与分子结构的关系以及它们在器件上的应用 .1　吡唑啉化合物1,3,5 三芳基 4 ,5 二氢 1H吡唑 (2 吡唑啉 )化合…     

有机电致发光器件研究新进展

中科院化学所有机固体重点实验室与长春应化所高分子物理与化学国家重点实验室合作，近日在蓝光有机电致发光材料与器件的研究方面取得新进展。     

白色有机电致发光材料与器件

综述白色有机电致发光材料和器件的研究进展。归纳了获取白色有机电致发光的途径和方法。分析了多种器件结构的特点及其材料。结合研究过程中存在的某些问题,从器件的发光效率和色纯度角度,讨论了影响发光器件性能的诸因素及其改进措施。     

红色有机电致发光材料DCJT的合成

以2,6-二甲基吡喃酮和1,1,7,7-四甲基久洛尼定为原料,经过醛化、丙二腈化及对接三步反应,合成出红色发光材料DCJT,纯度达到99.1%,三步的总收率达到35%以上,并用1H NMR,IR和元素分析对其结构进行了确认。     

有机电致发光器件封装技术的研究进展

有机电致发光器件(OLED)对O2和水汽非常敏感,渗入器件内部的O2和水汽会严重影响器件的发光寿命。因此,OLED器件的封装很重要。介绍了不同衬底或基板OLED封装技术的研究状况,包括以玻璃为基板的封装技术如等离子体化学气相沉积、原子层沉积、化学气相沉积聚合物薄膜和光聚合聚丙烯酸酯薄膜等;以塑料为基板的封装技术通常采用多层或迭层的复合封装技术如有机–无机复合膜和金属–有机复合膜的封装技术等。     

有机电致发光空穴传输材料的合成

有机电致发光中空穴传输材料对整个器件的性能有重要作用。系统地综述了空穴传输材料的研究现状,包括Ullmann偶合法、钯催化法、格氏反应、Suzuki偶合等。同时对合成的空穴传输材料的特性进行了简述。     

有机电致发光材料研究新进展

简要介绍了有机电致发光器件的结构、工作原理。重点从有机电致发光材料器件结构的角度出发,对电致发光材料最新研究进展进行了综述。     

Organic Host Materials for Solution-Processed Phosphorescent Organic Light-Emitting Diodes

As a new technology for flat-panel displays and general lighting sources, solution-processed phosphorescent organic light-emitting diodes (PhOLEDs) unfurl a bright future, due to their merits of high quantum efficiency and easy fabrication. In recent years, great progress has been made in the device performance of solution-processed PhOLEDs, by developing both high-efficiency organometallic phosphors and novel solution-processable organic host materials. This review highlights recently developed organic host materials for triplet guest emitters in solution-processed PhOLEDs. The solution-processable host materials are classified into three types – small molecule, dendrimer, and polymer – according to their molecular architecture and molecular weight. The material design concept and the relationships between the molecular structure, material properties and device performance are the focus of this discussion. A future strategy for the development of high-performance solution-processed host materials is proposed.     

Recent Advances in Solution-Processed White Organic Light-Emitting Materials and Devices

Solution-processed white organic light-emitting diodes (WOLEDs) have drawn great attention both in the academic and industrial research communities due to the potential application in low-cost, large-area, solid-state lightings. Issues related to the device efficiencies are largely hampering progress in this field. Alongside the development of new materials and novel device architectures, distinct progress has been made for such white devices. In particular, the all-phosphorescent light-emitting strategy has been intensively developed in recent years, mainly focusing on a host guest, doping-system-based, single-active-layer structure and a solution-processed, multilayer device structure. Novel approaches, including white single polymers and excimer-/exciplex-based white devices, have also appeared as a promising choice and received great attention. As a prerequisite, the issue of the morphology of the emissive layer is also important and has an influence on the optoelectronic behavior of the device. Herein, major advances in solution-processed WOLEDs based on polymers, dendrimers, or solution-processed small molecules are summarized. Special attention is focused on the main progress in high-efficiency, solution-processed WOLEDs with the key strategies mentioned above and the morphology issue in these systems. The remaining challenges in pursuing the development of reliable and energy-saving lighting devices are also discussed.     

Beryllium-Based,High-Triplet-Energy Material as a Host for Blue Phosphorescent Organic Light-Emitting Diodes

A beryllium-based compound, bis[2-(3,5-dimethylpyrazol-1-yl)pyridin-3-olate] beryllium (DmPPBe), was designed and synthesized as a high-triplet-energy host material for blue phosphorescent organic light-emitting diodes. The DmPPBe host showed a high triplet energy of 2.75 eV due to the high-triplet-energy 2-(3,5-dimethylpyrazol-1-yl)pyridin-3-ol ligand. The DmPPBe host was effective as the host material for blue phosphorescent organic light-emitting diodes and a high quantum efficiency of 17.7 % was achieved.     

含有芘基团的电致发光材料的研究进展

综述了近几年芘的衍生物在有机电致发光中的研究情况,展示了一些新结构并做了分析,总结了含芘基团电致发光材料的优点和缺点,并指出了芘的衍生物在有机电致发光材料中的应用前景。     

新型大环主体化合物柱芳烃的合成及应用

介绍了柱芳烃的产生、发展、应用及结构特征,详细综述了:新型柱芳烃的合成与性能研究;新型柱芳烃的超分子自组装及应用;新型柱芳烃的合成及在医药中的应用。并对柱芳烃的发展进行了展望。     

Hybrid Organic Light-Emitting Diodes with Low Color-Temperature and High Efficiency for Physiologically-Friendly Night Illumination

Low color-temperature (CT) light sources are preferred for physiologically-friendly illumination at night due to their low suppression of melatonin secretion. We fabricated low-CT hybrid organic light-emitting diodes (OLEDs) by constructing a double emissive-layer (EML) structure, with a blue-red fluorescent-phosphorescent hybrid EML and a green phosphorescent EML, separated by a bipolar interlayer. By doping a red phosphor in a blue fluorescent mixed-host with a decent concentration, blue and red emissions from the host and dopant, respectively, were obtained. The CT of the optimized device was tuned to less than 2500 K, with the brightness ranging from 100 to 10,000 cd m⁻². In addition, the low-CT OLED exhibited much higher efficacy than other low-CT light sources, such as incandescent bulbs and candles. The maximum power efficiency and external quantum efficiency of the hybrid OLED reached 54.6 lm W⁻¹ and 24.3 %, respectively, which only rolled off to 44.2 lm W⁻¹ and 23.6 % at 1000 cd m⁻², with a CT of 1910 K. Low-CT OLEDs with high efficacy provide a promising alternative for night lighting that will safeguard human health.     

一种新型耐尔蓝衍生物的合成及其对Hg~(2+)识别研究

设计合成了一种新型耐尔蓝衍生物2-{9-(二甲基氨基)-10-甲基-9H-苯并[a]吩嗪-5-羰基}-N-苯基肼硫代酰胺盐酸盐(EPNH),其结构得到了1HNMR、ESI-MS和元素分析的确认。实验结果表明,该化合物在p H 7.4的HEPES缓冲液中,对Hg2+表现出高选择性和高灵敏度的荧光和显色传感;当Hg2+浓度在0.02~0.25μmol/L范围内时,线性相关系数R=0.997 7,最低检出限为0.01μmol/L(n=6)。     

固相一步合成碳负载磁性吸附材料及其在染料废水中的应用

以农业生物质甘蔗渣为碳源、氯化钴和氯化镍为前驱体,通过固相一步热还原法制备了Co-Ni/C磁性吸附材料,并将之用于对亚甲基蓝的吸附和磁性分离。利用生物质碳和磁性纳米粒子的协同作用,室温条件下在6 h内该磁性吸附剂对染料的吸附率达99%。这种廉价、高效的吸附剂有望实现大规模制备,并在将来的水污染处理领域中发挥重要的作用。     

一种新型有机硅消泡剂合成与应用研究

以烯丙醇聚氧乙烯聚氧丙烯醚(FB)、长链烷基酯与含氢硅油(PHMS)通过Si-H加成反应,合成了有机硅高聚物（改性硅油）,用IR和1HNMR对其结构进行了表征。将改性硅油作为活性成分,制备了有机硅消泡剂。探讨了长链烷基酯链段长短对其稳定性、表面张力、消抑泡性能的影响。结果表明：甲基丙烯酸十四烷基酯与烯丙醇聚醚共改性硅油所制消泡剂稳定性强,粒径分布最均匀,主要集中在260 nm处,消抑泡效果最优,其在质量分数为5%的十二烷基苯磺酸钠溶液中消泡时间为6 s,在质量分数为5%洗衣粉溶液中消泡时间为4 s,在黑液溶液中（质量分数为30%木质素）消泡时间为12 s,消抑泡性能优于国内（RX-504）与德国（850E）消泡剂产品。