A fully aryl-substituted poly(ladder-type pentaphenylene):: A remarkably stable blue-light-emitting polymer

被引:92
作者
Jacob, J
Sax, S
Gaal, M
List, EJW
Grimsdale, AC
Müllen, K
机构
[1] Max Planck Inst Polymer Res, D-55128 Mainz, Germany
[2] Graz Univ Technol, Inst Solid State Phys, Christian Doppler Lab Adv Funct Mat, A-8010 Graz, Austria
[3] Joanneum Res, Inst Nanostruct Mat & Photon, A-8160 Weiz, Austria
关键词
D O I
10.1021/ma0517143
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A new poly(ladder-type pentaphenylene) bearing aryl groups at all bridgehead positions has been prepared. In comparison to previously reported bridged poly(p-phenylene)-type polymers such as polyfluorene and polyindenofluorene, this polymer is optimized for maximum overlap of the blue emission with the sensitivity of the human eye. Furthermore, the introduction of aryl substituents at all the bridgeheads produces a material which shows remarkably stable blue emission in light-emitting diodes and is not subject to oxidative degradation-induced defect formation. In particular, a comparison of the novel fully aryl-substituted polymer with a partially aryl-substituted polymer reveals that the oxidative degradation-induced defect formation can be almost completely eliminated upon aryl substitution.
引用
收藏
页码:9933 / 9938
页数:6
相关论文
共 30 条
[1]  
Ego C, 2002, ADV MATER, V14, P809, DOI 10.1002/1521-4095(20020605)14:11<809::AID-ADMA809>3.0.CO
[2]  
2-8
[3]   Excimers or emissive on-chain defects? [J].
Gaal, M ;
List, EJW ;
Scherf, U .
MACROMOLECULES, 2003, 36 (11) :4236-4237
[4]   Stabilized blue emission from polyfluorene-based light-emitting diodes: Elimination of fluorenone defects [J].
Gong, XO ;
Iyer, PK ;
Moses, D ;
Bazan, GC ;
Heeger, AJ ;
Xiao, SS .
ADVANCED FUNCTIONAL MATERIALS, 2003, 13 (04) :325-330
[5]  
Grimsdale AC, 2002, ADV FUNCT MATER, V12, P729, DOI 10.1002/1616-3028(20021016)12:10<729::AID-ADFM729>3.0.CO
[6]  
2-F
[7]   Effects of interchain interactions, polarization anisotropy, and photo-oxidation on the ultrafast photoluminescence decay from a polyfluorene [J].
Herz, LM ;
Phillips, RT .
PHYSICAL REVIEW B, 2000, 61 (20) :13691-13697
[8]   Ladder-type pentaphenylenes and their polymers:: Efficient blue-light emitters and electron-accepting materials via a common intermediate [J].
Jacob, J ;
Sax, S ;
Piok, T ;
List, EJW ;
Grimsdale, AC ;
Müllen, K .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (22) :6987-6995
[9]   Poly(tetraarylindenofluorene)s:: New stable blue-emitting polymers [J].
Jacob, J ;
Zhang, JY ;
Grimsdale, AC ;
Müllen, K ;
Gaal, M ;
List, EJW .
MACROMOLECULES, 2003, 36 (22) :8240-8245
[10]   Photophysical characterization of light-emitting poly(indenofluorene)s [J].
Keivanidis, PE ;
Jacob, J ;
Oldridge, L ;
Sonar, P ;
Carbonnier, B ;
Baluschev, S ;
Grimsdale, AC ;
Müllen, K ;
Wegner, G .
CHEMPHYSCHEM, 2005, 6 (08) :1650-1660