共查询到17条相似文献,搜索用时 218 毫秒
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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. 相似文献
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两种新型双极有机小分子发光材料的合成与发光 总被引:3,自引:0,他引:3
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. 相似文献
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新型双极有机小分子化合物及其Al3+配合物的合成与发光 总被引:2,自引:1,他引:2
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. 相似文献
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光致发光配合物[Au~2(μ-PNP)~3](ClO~4)~2(PNP=2,6-双二苯基膦吡啶)具有一个空腔,作为一个主体配合物,当客体分子尺寸和性质特点匹配时,主客体分子相互作用,主体配合物光致发光性能和谱学性质发生变化。利用电子吸收光谱、^3^1P核磁共振波谱、发射光谱等方法,对不同客体分子存在下,配合物光物理性质改变情况作了深入的讨论。 相似文献
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光致发光主客体配合物[Au~2(μ-PNP)~3](ClO~4)~2的 谱学研究 总被引:1,自引:0,他引:1
光致发光配合物[Au~2(μ-PNP)~3](ClO~4)~2(PNP=2,6-双二苯基膦吡啶)具有一个空腔,作为一个主体配合物,当客体分子尺寸和性质特点匹配时,主客体分子相互作用,主体配合物光致发光性能和谱学性质发生变化。利用电子吸收光谱、^3^1P核磁共振波谱、发射光谱等方法,对不同客体分子存在下,配合物光物理性质改变情况作了深入的讨论。 相似文献
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金属有机骨架复合材料RhB/MOF-5的制备及其发光性质 总被引:2,自引:0,他引:2
通过溶剂扩散法成功地将激光染料分子罗丹明B(RhB)组装到了金属有机骨架材料MOF-5中, 从而制备出具有光学活性的主-客体金属有机骨架复合材料RhB/MOF-5. 通过光学显微镜、XRD、FTIR、UV-Vis和PL表征证明RhB存在于MOF-5晶体孔道中, 而且该金属有机骨架复合材料表现出很好的光致发光性质. 相似文献
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一种含三苯胺链段的PPV类交替共聚物的合成、表征及性能 总被引:5,自引:0,他引:5
合成了三苯胺二醛和1-甲氧基-4-辛氧基-2,5-二甲苯双(三苯基氯化)两种单体,通过Wittig反应制得了共轭聚合物,对共轭聚合物进行了表征和性能测试.这类共轭聚合物的氯仿溶液和膜在紫外光激发下能发出强的蓝绿光,与小分子三苯胺衍生物(TPD)相比,具有相对较高的热稳定性和良好的成膜性.电化学分析表明聚合物具有很好的空穴传输能力.同时对共轭聚合物的光致发光和电致发光性能进行了研究,结果表明,此聚合物与同类聚对亚苯基亚乙烯基(PPV)型聚合物相比具有较低的驱动电压和较高的发光亮度,是一种潜在的有机高分子电致发光材料. 相似文献
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Jiang P Zhao DD Yang XL Zhu XL Chang J Zhu HJ 《Organic & biomolecular chemistry》2012,10(24):4704-4711
A series of triphenylamine-centered starburst quinolines (1a-1g) have been synthesized by Friedl?nder condensation of the 4,4',4'-triacetyltriphenylamine (2) and 2-aminophenyl ketones (3a-3g) in the presence of catalytic sulfuric acid and characterized well. They are thermally robust with high glass transition temperatures (above 176.4 °C) and decomposition temperatures (above 406 °C). These compounds emit blue fluorescence with λ(max)(Em) ranging from 433 to 446 nm in dilute toluene solution and 461 to 502 nm in the solid-state and have a relatively high efficiency (Φ(u) = 0.98-0.57). 1a-1g have estimated ionization potentials (IP) of 4.54 to 6.45 eV which are significantly near or higher than those of well-known electron transport materials (ETMs), including tris(8-hydroxyquinoline)aluminium (Alq(3)) (IP = 5.7-5.9 eV), and previously reported oligoquinolines (IP = 5.53-5.81 eV). Quantum chemical calculations using DFT B3LYP/6-31G* showed the highest occupied molecular orbital (HOMO) of -5.05 to -4.81 eV, which is close to the work function of indium tin oxide (ITO). These results demonstrate the potential of 1a-1g as hole-transporting/light-emitting/electron-transport materials and the host-materials of a dopant for hole-injecting for applications in organic light-emitting devices. 相似文献
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Xiao Fan Zhongping LiDandan Yao Yuwei ZhangHe Li Xiaoming LiuYing Mu 《Comptes Rendus Chimie》2014,17(11):1102-1108
Two stable blue-light-emitting molecular materials containing twisted binaphthyl and peripheral triphenylamine groups were synthesized by Suzuki and Heck cross-coupling reactions. Both compounds exhibit excellent thermal and morphologic stabilities, high glass transition temperatures and good fluorescence quantum yield in films. They serve as both hole-transporting and blue emission materials in organic light-emitting diodes with good external quantum efficiencies. 相似文献
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Two novel organic hole-transporting materials have been synthesized by combination of triphenylamines(TPA) viaπ-conjugated bonds using Wittig reaction.The structures were characterized by NMR,FT-IR and HRMS.The optical,electrochemical and thermal properties of the materials were studied in detail.The results show that these two compounds have blue emission,proper HOMO levels and high thermal stability.Furthermore,a quantum chemical calculation on electron distribution of the two compounds was performed, which suggests the current synthesized materials would be promising candidates for hole-transporting materials. 相似文献
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A series of novel N-carbazole end-capped π-conjugated molecules were synthesized by a divergent approach with the use of bromination, Suzuki cross-coupling, and Ullmann reactions and their physical properties were investigated. In dilute solution, UV-vis absorption spectra displayed bathochromic shift with respect to their conjugated backbones, and photoluminescence spectra showed emission maxima in the blue region. Thermal analysis revealed that they are thermally stable semi-crystalline and amorphous materials. All molecules exhibited good electrochemical stability with high-lying HOMO energy levels and have potential applications as hole-transporting and light-emitting layers in organic light-emitting diodes or as host materials for electrophosphorescent applications. 相似文献
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ZHANG Qian CHEN Jiang-shan CHENG Yan-xiang WANG Li-xiang MA Dong-ge JING Xia-bin WANG Fo-song 《高等学校化学研究》2006,22(5):647-650
IntroductionThe development of organic light-emitting diodes(OLEDs)has been the subject of intensive academicand industrial research that is directed toward the fabri-cation of large-area,monocolor and full color flat-paneldisplays[1].Ever since Tanget al… 相似文献
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《结构化学》2016,(10)
Three star-shaped truxene-based small molecules(namely TXH,TXM,TXO) were synthesized,characterized and used as hole-transporting materials(HTMs) for perovskite solar cells(Pv SCs). The device based on TXO delivered a respectable power conversion efficiency(PCE) of 7.89% and a high open-circuit voltage(Voc) of 0.97 V,which far exceeded the values of the devices based on other two small molecules. The highest PCE for the device based on TXO is mainly contributed from its lowest series resistance(Rs) value and largest short-circuit current(Jsc) value under the same circumstances. All these results indicate that TXO is a promising HTM candidate for Pv SCs. 相似文献