Synthesis and electro-optical properties of spiro-bifluorenylvinylene-based polymers for light-emitting diodes applications
摘要:
五种新的热稳定电致发光芳香烯-乙烯共轭聚合物被合成,包括聚[3′,6′-双(3,7-二甲基辛氧基)-9,9′-螺二苯并荧光酮-2,7-乙烯基] [(OC10)2-Spiro-PFV] 和聚[{3′,6′-双(3,7-二甲基辛氧基)-9,9′-螺二苯并荧光酮-2,7-乙烯基}-共-2-{甲氧基-5-(2-乙基己氧基)-1,4-苯乙烯}] [(OC10)2-Spiro-PFV-co-MEH-PPV]。这些聚合物被用于制造高效的发光二极管(LED)。聚合物的玻璃转变温度高于PPVs和PFs,范围在170至222°C之间。含有新聚合物的ITO/PEDOT/聚合物/LiF/铝LED的发射颜色根据共聚物组成的不同,从蓝色(467 nm)到黄色(587 nm)变化。这些LED的最大亮度和光效分别可达到4062 cd m−2和1.79 cd A−1。
Synthesis and electro-optical properties of spiro-bifluorenylvinylene-based polymers for light-emitting diodes applications
摘要:
五种新的热稳定电致发光芳香烯-乙烯共轭聚合物被合成,包括聚[3′,6′-双(3,7-二甲基辛氧基)-9,9′-螺二苯并荧光酮-2,7-乙烯基] [(OC10)2-Spiro-PFV] 和聚[{3′,6′-双(3,7-二甲基辛氧基)-9,9′-螺二苯并荧光酮-2,7-乙烯基}-共-2-{甲氧基-5-(2-乙基己氧基)-1,4-苯乙烯}] [(OC10)2-Spiro-PFV-co-MEH-PPV]。这些聚合物被用于制造高效的发光二极管(LED)。聚合物的玻璃转变温度高于PPVs和PFs,范围在170至222°C之间。含有新聚合物的ITO/PEDOT/聚合物/LiF/铝LED的发射颜色根据共聚物组成的不同,从蓝色(467 nm)到黄色(587 nm)变化。这些LED的最大亮度和光效分别可达到4062 cd m−2和1.79 cd A−1。
Synthesis of Molecular Tripods Based on a Rigid 9,9′-Spirobifluorene Scaffold
作者:Michal Valášek、Kevin Edelmann、Lukas Gerhard、Olaf Fuhr、Maya Lukas、Marcel Mayor
DOI:10.1021/jo501029t
日期:2014.8.15
The efficient synthesis of a new tripodal platform based on a rigid 9,9′-spirobifluorene with three acetyl protected thiol groups in the positions 2, 3′ and 6′ for deposition on Au(111) surfaces is reported. The modular 9,9′-spirobifluorene platform provides both a vertical arrangement of the molecular rod in position 7 and its electronic coupling to the gold substrate. To demonstrate the validity
Bisphenylene-spirobifluorene compounds, method for synthesizing the same, and electroluminescence material and device having the same
申请人:——
公开号:US20040034263A1
公开(公告)日:2004-02-19
Provided are bisphenylene-spirobifluorene compounds, a method for synthesizing the same, and EL material and device having the same. The bisphenylene-spirobifluorene compound is defined by the following formula:
1
wherein R
1
and R
2
are identical or different and are independently a straight-chain or branched alkyl group having from 1 to 22 carbon atoms, X
1
and X
2
independently contains one or more elements selected from the group consisting of C, O, N, S, Si and Ge, and m and n are integers from 1 to 4.
Spirobifluorene compounds, electroluminescence polymer and electroluminescence element having the same
申请人:——
公开号:US20030044641A1
公开(公告)日:2003-03-06
Provided are spirobifluorene compounds which can provide excellent processibility with improved solubility in organic solvents, an electroluminescence (EL) polymer obtained therefrom and an EL element having the same. The EL polymer comprising repeating units of the following formula:
1
wherein R
1
and R
2
are identical or different and are independently a straight-chain or branched alkyl group having from 1 to 22 carbon atoms or an aryl group substituted by C
1
-C
22
alkyl, and at least one of the R
1
and R
2
contains one or more atoms selected from the group consisting of O, N, S, Si and Ge.
Three new octyloxy substituted spirobifluorenes, 2,7-diphenyl-3',6'-bis(octyloxy)-9,9'-spirobifluorene (DPBSBF, 1a), 2,7-di-biphenyl-3',6'-bis(octyloxy)-9,9'-spirobifluorene (DBBSBF, 1b) and 2,7-diterphenyl-3,6'-bis(octyloxy)-9,9'-spirobifluorene (DTBSBF, 1c) were prepared. All the compounds had been fully characterized by H-1 and C-13 NMR, UV-Vis, DSC, mass spectrometry and gave satisfactory elemental analyses. They possessed good solubility in common organic solvents and good homogeneous film formation. The optical energy band gap of DBBSBF was 3.27 eV between the HOMO energy level, 5.85 eV, measured by UPS and the LUMO, 2.58 eV, calculated from absorption spectrum. A blue organic light emitting diode (OLED) based on the structure of ITO/TPD (60 nm)/DBBSBF (40 nm)/Alq(3) (20 nm)/LiF (1 nm)/Al (100 run) showed good performance. The luminance of 3125 cd/m(2) was observed at a drive voltage of 12.8 V and the colour coordinate in CIE chromaticity was (0.14, 0.12). The external quantum efficiency was obtained to be 2.8% at 100 cd/m(2). (C) 2003 Elsevier Science Ltd. All rights reserved.