Four bipolar triphenylamine(TPA) charge transport materials were constructed by introducing imidazole and trifluoroacetyl groups into the TPA units, and characterized by the nuclear magnetic resonance spectrum(NMR) an...Four bipolar triphenylamine(TPA) charge transport materials were constructed by introducing imidazole and trifluoroacetyl groups into the TPA units, and characterized by the nuclear magnetic resonance spectrum(NMR) and mass spectrometry(MS). Among them, 4-(2-(1,3-trifluoroacetyl)imidazole)-phenyl-4,4?-di(4-methoxyphenyl)amine(2 Me OTPA-IOS, 1) was determined by X-ray single-crystal diffraction. The compound crystallizes in monoclinic system, space group P21/c with a = 24.338(5), b = 9.565(2), c = 11.456(2) ?, β = 99.427(3)°, Mr = 565.47, V = 2631.0(8) ?3,Z = 4,Dc = 1.428 g/cm3, μ = 0.125 mm–1, F(000) = 1160, the final R = 0.0559 and wR = 0.1265 for 5150 observed reflections with I > 2σ(I). The optimized configurations of the target compounds were obtained by quantum chemical calculation, and the bipolarity of transportable holes and electrons was predicted by the frontier molecular orbital(HOMO and LUMO), which was further confirmed by the time of flight(TOF) method. In addition, the introduction of the terminal flexible chain enhances the solubility, thermal stability(DSC and TGA) and film-forming property of all compounds, and the frontier orbital energy of the solid film of the compounds was also tested(UV-vis and PYS). Thus, these compounds have the bipolarity of transportable holes and electrons and show good solubility and thermal stability.展开更多
Novel pyridine-containing macrocyclic compounds, such as 6,12,19,25-tetramethyl-7,11,20,24-dinitrilo-dibenzo [b,m]1,4,12,15-tetra-azacyclodoc osine （TMCD）, were synthesized and used as electron transport layer in or...Novel pyridine-containing macrocyclic compounds, such as 6,12,19,25-tetramethyl-7,11,20,24-dinitrilo-dibenzo [b,m]1,4,12,15-tetra-azacyclodoc osine （TMCD）, were synthesized and used as electron transport layer in organic electroluminescent devices. Devices with a structure of glass/indium-tin oxide/arylamine derivative/ tris（quinolinolato）aluminum（Ⅲ） （Alq）/TMCD/LiF/Al exhibited green emission from the Alq layer with external quantum efficiency of 0.84% and luminous efficiency of 1.3 lm/W. The derivatives of TMCD were synthesized and characterized as well. These compounds were also found to be useful as the electron-transporting materials in organic electroluminescent devices.展开更多
Perovskite solar cells(PSCs) have made great progress since 2009 and become the focus of current research. As an important part of PSCs, charge transporting materials play an important role in the performance of the d...Perovskite solar cells(PSCs) have made great progress since 2009 and become the focus of current research. As an important part of PSCs, charge transporting materials play an important role in the performance of the devices. In this review, we introduce the evolution of electron and hole transporting materials in PSCs in recent years and summarize some typical charge transporting materials and their applications in PSCs. For electron transporting materials, metal oxides(TiO_(2), SnO_(2) and ZnO) and organic materials(fullerenes, non-fullerenes and their derivatives)are the most widely used materials in PSCs. For hole transporting materials, small molecule spiro-OMeTAD(2,2’,7,7’-Tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9’-spirobifluorene), polymer PEDOT:PSS(poly(3,4-ethylenedioxythiophene): polystyrene sulfonate), PTAA(poly-[bi(4-phenyl)](2,4,3-trimethylphenyla-mine)), P3 HT(poly(3-hexythiophene)) and inorganic materials(NiOx, CuSCN, CuO) are adopted in PSCs. Finally, different types of charge transporting materials are summarized and their future development is prospected.展开更多
A novel blue luminescent compound with both hole and electron transplanting groups, 2-(4-(N-ethylcarbazolyl))imidazo\phenanthroline(ECIP), was synthesized. The composition of the compound was confirmed by elemental an...A novel blue luminescent compound with both hole and electron transplanting groups, 2-(4-(N-ethylcarbazolyl))imidazo\phenanthroline(ECIP), was synthesized. The composition of the compound was confirmed by elemental analysis, MS and 1H NMR. Uv-Vis absorption, fluorescence, quantum yield determination and thermal analysis indicate this compound is an excellent blue luminescent material.展开更多
The three-layer electroluminescent ( EL ) devices were fabricated with two amphiphilic8-aminoquinoline derivatives ( H 2 A 12 and H 2 A 16 ) and one complex ( CuA 12 ) as hole transport Layer ( HTL ) .The structure of...The three-layer electroluminescent ( EL ) devices were fabricated with two amphiphilic8-aminoquinoline derivatives ( H 2 A 12 and H 2 A 16 ) and one complex ( CuA 12 ) as hole transport Layer ( HTL ) .The structure of this EL device was ITO/TPD/HTL/Alq 3 /Al,where HTL being Langmuir-Blodgett films and evaporated films.The hig hest luminance was621cd · m -2 .It were proved that the transport efficiency of H 2 A 16 in LB film was180%higher than that of H 2 A 16 in evaporated film;H 2 A 12 in LB film was320%higher than that of H 2 A 16 in LB film and172%higher than that of CuA 12 in LB film.展开更多
Two novel starburst compounds (star arylamines),4,4′,4″ tris(diphenylamino) triphenylamine (TDATA) and 4,4′,4″ tris[3 methyl (phenyl) amino] triphenylamine (MTDATA),were designed and synthesized as hole transport ...Two novel starburst compounds (star arylamines),4,4′,4″ tris(diphenylamino) triphenylamine (TDATA) and 4,4′,4″ tris[3 methyl (phenyl) amino] triphenylamine (MTDATA),were designed and synthesized as hole transport materials with high glass transition temperature ( t g),good film formation and film stability,excellent hole transporting ability.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
基金This project was supported by the Scientific Research Development Program of Shandong Provincial High School(J18KA082)the Under-graduate Training Program for Innovation and Entrepreneurship of Shandong Provincial High School(201710446042,2018A043)the Experimental Technology Research Program of Qufu Normal University(SJ201709)
文摘Four bipolar triphenylamine(TPA) charge transport materials were constructed by introducing imidazole and trifluoroacetyl groups into the TPA units, and characterized by the nuclear magnetic resonance spectrum(NMR) and mass spectrometry(MS). Among them, 4-(2-(1,3-trifluoroacetyl)imidazole)-phenyl-4,4?-di(4-methoxyphenyl)amine(2 Me OTPA-IOS, 1) was determined by X-ray single-crystal diffraction. The compound crystallizes in monoclinic system, space group P21/c with a = 24.338(5), b = 9.565(2), c = 11.456(2) ?, β = 99.427(3)°, Mr = 565.47, V = 2631.0(8) ?3,Z = 4,Dc = 1.428 g/cm3, μ = 0.125 mm–1, F(000) = 1160, the final R = 0.0559 and wR = 0.1265 for 5150 observed reflections with I > 2σ(I). The optimized configurations of the target compounds were obtained by quantum chemical calculation, and the bipolarity of transportable holes and electrons was predicted by the frontier molecular orbital(HOMO and LUMO), which was further confirmed by the time of flight(TOF) method. In addition, the introduction of the terminal flexible chain enhances the solubility, thermal stability(DSC and TGA) and film-forming property of all compounds, and the frontier orbital energy of the solid film of the compounds was also tested(UV-vis and PYS). Thus, these compounds have the bipolarity of transportable holes and electrons and show good solubility and thermal stability.
基金the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry(No.2005383).
文摘Novel pyridine-containing macrocyclic compounds, such as 6,12,19,25-tetramethyl-7,11,20,24-dinitrilo-dibenzo [b,m]1,4,12,15-tetra-azacyclodoc osine （TMCD）, were synthesized and used as electron transport layer in organic electroluminescent devices. Devices with a structure of glass/indium-tin oxide/arylamine derivative/ tris（quinolinolato）aluminum（Ⅲ） （Alq）/TMCD/LiF/Al exhibited green emission from the Alq layer with external quantum efficiency of 0.84% and luminous efficiency of 1.3 lm/W. The derivatives of TMCD were synthesized and characterized as well. These compounds were also found to be useful as the electron-transporting materials in organic electroluminescent devices.
基金financially supported by the National Natural Science Foundation of China (Nos.61922060,61775156,61905173 and U1710115)Key Research and Development (International Cooperation) Program of Shanxi Province (No.201803D421044)+2 种基金the Natural Science Foundation of Shanxi Province (No.201801D221029)the Henry Fok Education Foundation Young Teachers fund,the Young Sanjin Scholars Program,the Platform and Base Special Project of Shanxi Province (No.201805D131012-3)the Graduate Innovation Project of Shanxi Province (No.2020BY117)。
文摘Perovskite solar cells(PSCs) have made great progress since 2009 and become the focus of current research. As an important part of PSCs, charge transporting materials play an important role in the performance of the devices. In this review, we introduce the evolution of electron and hole transporting materials in PSCs in recent years and summarize some typical charge transporting materials and their applications in PSCs. For electron transporting materials, metal oxides(TiO_(2), SnO_(2) and ZnO) and organic materials(fullerenes, non-fullerenes and their derivatives)are the most widely used materials in PSCs. For hole transporting materials, small molecule spiro-OMeTAD(2,2’,7,7’-Tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9’-spirobifluorene), polymer PEDOT:PSS(poly(3,4-ethylenedioxythiophene): polystyrene sulfonate), PTAA(poly-[bi(4-phenyl)](2,4,3-trimethylphenyla-mine)), P3 HT(poly(3-hexythiophene)) and inorganic materials(NiOx, CuSCN, CuO) are adopted in PSCs. Finally, different types of charge transporting materials are summarized and their future development is prospected.
文摘A novel blue luminescent compound with both hole and electron transplanting groups, 2-(4-(N-ethylcarbazolyl))imidazo\phenanthroline(ECIP), was synthesized. The composition of the compound was confirmed by elemental analysis, MS and 1H NMR. Uv-Vis absorption, fluorescence, quantum yield determination and thermal analysis indicate this compound is an excellent blue luminescent material.
文摘The three-layer electroluminescent ( EL ) devices were fabricated with two amphiphilic8-aminoquinoline derivatives ( H 2 A 12 and H 2 A 16 ) and one complex ( CuA 12 ) as hole transport Layer ( HTL ) .The structure of this EL device was ITO/TPD/HTL/Alq 3 /Al,where HTL being Langmuir-Blodgett films and evaporated films.The hig hest luminance was621cd · m -2 .It were proved that the transport efficiency of H 2 A 16 in LB film was180%higher than that of H 2 A 16 in evaporated film;H 2 A 12 in LB film was320%higher than that of H 2 A 16 in LB film and172%higher than that of CuA 12 in LB film.
文摘Two novel starburst compounds (star arylamines),4,4′,4″ tris(diphenylamino) triphenylamine (TDATA) and 4,4′,4″ tris[3 methyl (phenyl) amino] triphenylamine (MTDATA),were designed and synthesized as hole transport materials with high glass transition temperature ( t g),good film formation and film stability,excellent hole transporting ability.
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.
