含芳胺和1,3,4-噁二唑的星型有机分子合成及光电性质

通过分子设计, 采用多步反应合成了2种新型的具有“双极”(Bipolar)性质和发光性能的以N原子为中心的星型有机分子. 用1H NMR, MS和元素分析进行了表征, 研究了化合物的热稳定性和固体粉末的光致发光性质, 并用循环伏安法测定了其电化学性能. 结果表明, 这种同时具备空穴传导和电子输入双重功能基团的星型有机小分子的光致发光性能优良(量子效率达到82%—95%), 热稳定性好, 可以作为有机电致发光器件材料.     

一种星型有机低聚物的合成及光电性能

通过多步反应合成了一种新型的具有“双极(bipolar)”性质和发光性能的以N原子为中心的星型有机小分子低聚物——三(4-(5-(4-(5-(4-(二苯胺基)苯基)-1,3,4-噁二唑-2)苯基)-1,3,4-噁二唑-2)苯基)胺. 用¹H NMR, MS和元素分析进行了表征, 研究了化合物的热稳定性和固体粉末的光致发光性质, 并用循环伏安法测定了其电化学性能. 结果表明, 这种合成的同时具备空穴传导和电子输入双重功能基团的星型有机小分子光致发光性能优良(量子效率92%), 热稳定性好, 可以作为制作有机电致发光器件的候选材料.     

两种新型双极有机小分子发光材料的合成与发光

设计和合成了两种新的具有“双极(bipolar)”性质和发光性能的有机小分子化合物N-[4-(5-(2-苯基喹啉-4)-1,3,4-噁二唑-2)苯基]-N'-苯基-N,N'-二苯基-1,1'-联苯基-4,4'-二胺(TPDOPQ)和N,N'-双{4-[5-(2-苯基喹啉-4-基)-1,3,4-噁二唑-2]苯基}-N,N'-二苯基-1,1'-联苯基-4,4'-二胺[TPD(OPQ)₂]. 用¹H NMR, MS和元素分析进行了表征, 研究了化合物的热稳定性和光致发光性质, 并用循环伏安法测定了其电化学性能. 结果表明, 这两种合成的有机化合物同时具备空穴传导和电子输入双重功能, 光致发光性能优良, 热稳定性好, 能形成均衡薄膜, 因此可作为制作有机电致发光器件的候选材料.     

新型双极有机小分子化合物及其Al3+配合物的合成与发光

合成了一种新的具有“双极”(bipolar)性质的有机小分子蓝色发光材料2-(5-(4-(二苯胺基)苯基)-1,3,4-噁二唑-2-)苯酚［2(5-(4-(diphenylamino)phenyl)-1,3,4-oxadiazol-2-yl)phenol, HPOT］, 并以HPOT为配体, 与铝离子配位, 合成了三(2-(5-(4-(二苯胺基)苯基) 1,3,4-噁二唑-2-)苯酚)合铝［tri(2-(5-(4-(diphenylamino)phenyl)-1,3,4-oxadiazol-2-yl)phenonate)aluminum, AlPOT］配合物. 用 1 H NMR、 HRMS和元素分析进行了表征, 并测定了两种化合物的光致发光性质和热稳定性. 结果表明: 两种新化合物的热稳定性好, 光致发光性能优良, 是制作有机电致发光器件的候选材料.     

一种新型铕(Ⅲ)三元配合物的合成与电致发光

合成了一种含有空穴传导基团三苯胺、电子传导基团嗯二唑的新型配体（EtPOTIP）及其铕（Ⅲ）的三元配合物Eu（DBM）,EtPOTIP,通过^1HNMR、IR、元素分析及质谱对它们的结构进行了表征．对配体和配合物的吸收光谱及光致发光光谱研究结果表明：配体和配合物对近紫外光有强烈吸收,配合物在近紫外光激发下发出强的Eu^3＋特征红光,荧光量子效率为0．48;热分析显示配合物具有高的热稳定性,表明合成的配合物是一种优良的多功能红色发光材料。制作了相应的明亮电致发光器件,显示EtPOTIP同时具备空穴传导和电子传导性能,EtPOTIP在配合物中的存在显著改善了器件的电致发光性能。     

交联聚离子液体的合成及质子传导性能研究

本文设计合成了四种具有超高质子传导性能的交联聚离子液体材料。采用红外、元素分析、X射线光电子能谱和扫描电镜等表征手段对所合成材料的化学组成及结构进行了解析;采用热分析技术对材料的热稳定性进行了研究;系统研究了在不同条件下所合成材料的质子传导性能。研究结果表明:所合成的系列聚离子液体材料具有交联的三维结构;优异的热稳定性,其分解温度均超过253℃,最高分解温度可达314℃。在80℃和98%相对湿度(RH)下,这些材料的最大质子电导率为1.89×10~(-2) S·m~(-1)。该类聚离子液体材料超高的质子传导性能和简易的合成工艺,为新型质子传导材料的发展提供了新的思路。     

羧酸稀土配合物共聚反应的研究

通过沉淀法和直接法制备羧酸稀土配合物，与丙烯酸等单体共聚反应制备不同稀土含量的稀土有机高分子离聚物。用微量热天平(TG)、差热分析仪(DTA)等分析它的热稳定性以及玻璃化转变温度，用红外光谱分析其结构。讨论了用不同方法合成的稀土配合物对共聚反应和聚合物性能的影响。结果显示直接合成羧酸稀土配合物有利于共聚物性能的稳定和稀土含量的调节。     

新型咪唑类有机荧光小分子的合成及其性质研究

设计并合成了一系列新型吩噻嗪(或三苯胺)-取代的咪唑类有机荧光小分子,通过紫外-可见、荧光和电化学法分析了其光致发光性能和结构的关系.采用密度泛函(DFT)理论(B3LYP/6-31G(d)计算基组)计算了该化合物的最高占据分子轨道(HOMO)和最低未占分子轨道(LUMO)分布.产物的高荧光量子产率、高HOMO能级和高的热稳定性表明:咪唑和吩噻嗪或三苯胺的结合可有效提高产物空穴传输能力和荧光量子产率.     

咪唑类二阶非线性光学活性分子的设计、合成及性能

设计、合成了两个新的咪唑类二阶非线性光学生色团，对其热性能、透明性和 二阶非线性光学性能进行了测定和研究，实验表明生色团为非线性光学性能-透明 性-热稳定性能综合优化的有机二阶非线性光学生色团。     

新型吸附剂十四烷基磷酸铈的合成及气相色谱性能的研究

本文首次用均相化学反应方法合成了十四烷基磷酸铈,探讨了其结构及气相色谱分离分析的性能,结果表明该吸附型固定相是一种有机含量高,热稳定性好、组成可以控制、易于改性、表面不含极性点,分离效果好的新型气相色谱填料。     

Efficient single-layer electroluminescent device based on a bipolar emitting boron-containing material

A novel multifunctional 1,6-bis(2-hydroxyphenyl)pyridine boron bis(4-n-butyl-phenyl)phenyleneamine compound in which the hole-transporting (HT), electron-transporting (ET), and emitting (EM) components are integrated into a single molecule was synthesized and used as an emitting material to fabricate an efficient single-layer electroluminescent device.     

方酸作桥联配体的双核铕螯合物的电致发光

利用方酸作为桥联配体合成了一种双核铕鳌合物Eu_2（DBM）_4（Sq）Phen_2 ．用TPD作空穴传输材料、Eu_2（DBM）_4（Sq）Phen_2作发光材料和载流子传输材料、 8-羟基喹啉和铝（AlQ）作电子传输材料，设计了不同电致发光电特性，结果表明 Eu_2（DBM）_4（Sq）phen_2是一种同时具有空穴和电子传输能力的红色电致发光 材料，在器件结构为ITO/TPD,50nm/Eu_2（DBM）_4（Sq）Phen2，20nm/ALQ，50nm/LiF， 1nm/Al,200nm时，获得了在16V,6.9mA下有最大亮度91cd／m~2的电致发光器件.     

Two star-shaped small molecule donors based on benzodithiophene unit for organic solar cells

Star-shaped small molecules have attracted great attention for organic solar cells(OSCs) because they have three-dimensional charge-transport characteristics, strong light absorption capacities and easily tunable energy levels. Herein, three-and four-armed star-shaped small molecule donors, namely BDT-3 Th and BDT-4 Th, respectively, have been successfully designed and synthesized, which used benzodithiophene(BDT) as the central unit. The two star-shaped intermediates(2 a and 2 b) could be simul...     

A novel ambipolar spirobifluorene derivative that behaves as an efficient blue-light emitter in organic light-emitting diodes

A novel ambipolar spiro-configured D-A blue-light emitter bearing hole-transporting diphenylamino groups and electron-transporting phenylbenzimidazole groups was synthesized, characterized, and incorporated into an efficient single-layer organic light-emitting diode (OLED) device exhibiting blue-emission Commission International d'Eclairage (CIE) coordinates of 0.15 and 0.14, a turn-on potential of 4 V, a maximum brightness of 2800 cd/m2 at 830 mA/cm2 (19 V), and a maximum quantum efficiency of 0.53% (0.61 cd/A).     

Efficient white emitting copolymers based on bipolar fluorene-co-dibenzothiophene-S,S-dioxide-co-carbazole backbone

Efficient white light emitting polymers were synthesized based on poly(9,9-dioctylfluorene-co-dibenzothiophene-S,S-dioxide) as blue emitter and a bisphenylamine functionalized 2,1,3-benzothiadiazole (DPABT) as red emitter. It was found that the incorporation of hole-transporting carbazole moiety into polymer main chain could effectively reduce the hole injection barriers, which can lead to distinctly improved charge balance in the emissive layer. Additionally, the hole-transporting carbazole units may form efficient bipolar host with electron-transporting dibenzothiophene-S,S-dioxide units. The white light emitting diodes based on single polymer PFSOCzDPABT showed the maximum luminous efficiency of 3.3 cd/A with the maximum luminance of 10282 cd/m2 , and the luminous efficiency showed only 24% roll off at current density of 400 mA/cm2 . These Commission Internationale d’Enclairage (CIE) coordinates of the devices changed slightly with the driving voltages increasing from 8 V to 12 V, and were very close to National Television System Committee (NTSC) standard white light emission of (0.33, 0.33). The results indicated that the incorporating bipolar host and low band gap DPABT unit was a promising way to achieve efficient single white light emitting copolymers.     

Novel linear and tri-branched copolymers based on triphenylamine for non-doping emitting materials

Novel linear and tri-branched copolymers with triphenylamine and cyano groups in the main chain were synthesized by a concise route and an environment-friendly procedure without metal catalyst. They show strong fluorescence in solid state and can be used as non-doping emitter to fabricate emitting diodes. The single-layer electroluminescence devices with PVK or PEDOT buffer layer have been made with these copolymers as non-doping red-orange emitter, electron-transporting as well as hole-transporting material. The single-layer devices show preliminary results with maximum efficiency of 0.052% and EL wavelengths around 614 nm.