A photo-crosslinkable ployfluorene with oxetane group was synthesized and characterized by NMR,elemental analysis,etc.It was evidenced that the introduction of photocrosslinkable oxetane group has very little effect o...A photo-crosslinkable ployfluorene with oxetane group was synthesized and characterized by NMR,elemental analysis,etc.It was evidenced that the introduction of photocrosslinkable oxetane group has very little effect on the blue-light-emission of polyfluorene.Insoluble polyfluorene films were obtained by crosslinking with the addition of the triarylsulfonium salt photoinitiator under UV irriation.It was revealed that the optoelectronic properties of crosslingked polyfluorene displayed little change compared with uncrosslinked polyfluorenes.展开更多
左氧氟沙星(LOFX)是一种知名的抗菌药物,它的价格非常便宜,且有成熟的合成和纯化技术.本文中首次将LOFX作为一种蓝光发光材料和电子传输材料应用于有机电致发光器件(OLED)中.通过热重分析、UVVis吸收光谱、发射光谱以及循环伏安曲线详...左氧氟沙星(LOFX)是一种知名的抗菌药物,它的价格非常便宜,且有成熟的合成和纯化技术.本文中首次将LOFX作为一种蓝光发光材料和电子传输材料应用于有机电致发光器件(OLED)中.通过热重分析、UVVis吸收光谱、发射光谱以及循环伏安曲线详细地表征了LOFX的热学及光物理特性.LOFX有高的分解温度,为327°C;HOMO、LUMO能级分别为-6.2和-3.2 e V,光学带隙为3.0 e V.以LOFX作为客体材料,掺杂在主体材料4,4'-二(9-咔唑)联苯(CBP)中制备了蓝光OLED,该器件的电致发光(EL)发射峰位于452 nm,最大亮度为2315 cd·m-2.进一步,选择8-羟基喹啉铝(Alq3)作为参考材料,分别以LOFX和Alq3作为电子传输材料制备了结构相同的单载流子器件和绿色磷光OLED.在相同的电压下,以LOFX作为电子传输材料的单载流子器件的电流密度比以Alq3作为电子传输材料的单载流子器件更高.同时,以LOFX作为电子传输材料的绿色磷光OLED获得更高的器件效率.从这些EL性能可以看出,LOFX同时也是一很好的电子传输材料.展开更多
The novel fluorinated distyrylarylene, 4,4＇-bis（2,2-di（4-fluorophenyl）vinyl）biphenyl （DFPVBi）, was synthesized and fully characterized. The structure was confirmed with IR, 1↑H NMR, 13↑C NMR, 19↑F NMR and MS...The novel fluorinated distyrylarylene, 4,4＇-bis（2,2-di（4-fluorophenyl）vinyl）biphenyl （DFPVBi）, was synthesized and fully characterized. The structure was confirmed with IR, 1↑H NMR, 13↑C NMR, 19↑F NMR and MS analyses. Its electronic and photoluminescence properties were investigated by UV-Vis absorption, cyclic voltammetry and fluorescence spectroscopy. The energy levels of the highest occupied molecular orbital （HOMO） and the lowest unoccupied molecular orbital （LUMO） are --5.77 and --2.75 eV, respectively. The electroluminescence proper- ties of the organic light-emitting diode fabricated by DFPVBi were also studied. The device exhibits a pure blue emission peaked at 454 nm, which indicates a maximum luminance of 5872 cd/m^2 at 14.2 V and a maximum current efficiency of 2.82 cd/A at 10V, respectively.展开更多
The current trend for fabricating OLEDs is solution processing in the scope for low-cost manufacturing, but most small organic molecules must be deposited in vacuum to fabricate devices due to their poor solubility. I...The current trend for fabricating OLEDs is solution processing in the scope for low-cost manufacturing, but most small organic molecules must be deposited in vacuum to fabricate devices due to their poor solubility. In this paper, a new soluble anthracene derivative 2-tert-butyl-9,10-bis(9,9-dipropylfluorenyl)anthracene(TBPFA) was designed and synthesized. The compound exhibited pure-blue-light emitting(λmax=443 nm in dilute dichloromethane, λmax=450 nm in solid film) and high fluorescence quantum efficiency. The none-doped and doped single-layer devices were prepared successfully by spin coating process with TBPFA as blue-light emitting material and blue-light emitting host material respectively. In the doped device, TBPFA can transport energies to TBPe which is a good blue-light emitting material efficiently.展开更多
文摘A photo-crosslinkable ployfluorene with oxetane group was synthesized and characterized by NMR,elemental analysis,etc.It was evidenced that the introduction of photocrosslinkable oxetane group has very little effect on the blue-light-emission of polyfluorene.Insoluble polyfluorene films were obtained by crosslinking with the addition of the triarylsulfonium salt photoinitiator under UV irriation.It was revealed that the optoelectronic properties of crosslingked polyfluorene displayed little change compared with uncrosslinked polyfluorenes.
基金supported by the Program for New Century Excellent Talents in University of Ministry of Education of China(NCET-13-0927)International Science & Technology Cooperation Program of China(2012DFR50460)+1 种基金National Natural Science Foundation of China(61307029,21101111)Shanxi Provincial Key Innovative Research Team in Science and Technology,China(2012041011)~~
文摘左氧氟沙星(LOFX)是一种知名的抗菌药物,它的价格非常便宜,且有成熟的合成和纯化技术.本文中首次将LOFX作为一种蓝光发光材料和电子传输材料应用于有机电致发光器件(OLED)中.通过热重分析、UVVis吸收光谱、发射光谱以及循环伏安曲线详细地表征了LOFX的热学及光物理特性.LOFX有高的分解温度,为327°C;HOMO、LUMO能级分别为-6.2和-3.2 e V,光学带隙为3.0 e V.以LOFX作为客体材料,掺杂在主体材料4,4'-二(9-咔唑)联苯(CBP)中制备了蓝光OLED,该器件的电致发光(EL)发射峰位于452 nm,最大亮度为2315 cd·m-2.进一步,选择8-羟基喹啉铝(Alq3)作为参考材料,分别以LOFX和Alq3作为电子传输材料制备了结构相同的单载流子器件和绿色磷光OLED.在相同的电压下,以LOFX作为电子传输材料的单载流子器件的电流密度比以Alq3作为电子传输材料的单载流子器件更高.同时,以LOFX作为电子传输材料的绿色磷光OLED获得更高的器件效率.从这些EL性能可以看出,LOFX同时也是一很好的电子传输材料.
文摘The novel fluorinated distyrylarylene, 4,4＇-bis（2,2-di（4-fluorophenyl）vinyl）biphenyl （DFPVBi）, was synthesized and fully characterized. The structure was confirmed with IR, 1↑H NMR, 13↑C NMR, 19↑F NMR and MS analyses. Its electronic and photoluminescence properties were investigated by UV-Vis absorption, cyclic voltammetry and fluorescence spectroscopy. The energy levels of the highest occupied molecular orbital （HOMO） and the lowest unoccupied molecular orbital （LUMO） are --5.77 and --2.75 eV, respectively. The electroluminescence proper- ties of the organic light-emitting diode fabricated by DFPVBi were also studied. The device exhibits a pure blue emission peaked at 454 nm, which indicates a maximum luminance of 5872 cd/m^2 at 14.2 V and a maximum current efficiency of 2.82 cd/A at 10V, respectively.
文摘The current trend for fabricating OLEDs is solution processing in the scope for low-cost manufacturing, but most small organic molecules must be deposited in vacuum to fabricate devices due to their poor solubility. In this paper, a new soluble anthracene derivative 2-tert-butyl-9,10-bis(9,9-dipropylfluorenyl)anthracene(TBPFA) was designed and synthesized. The compound exhibited pure-blue-light emitting(λmax=443 nm in dilute dichloromethane, λmax=450 nm in solid film) and high fluorescence quantum efficiency. The none-doped and doped single-layer devices were prepared successfully by spin coating process with TBPFA as blue-light emitting material and blue-light emitting host material respectively. In the doped device, TBPFA can transport energies to TBPe which is a good blue-light emitting material efficiently.
