Polarized fluorescence of poly(9,9-dioctylfluorene) thin films on polyimide alignment layers

被引:7
作者
Kobayashi, A [1 ]
Todorokihara, M [1 ]
Fujihara, K [1 ]
Naito, H [1 ]
机构
[1] Univ Osaka Prefecture, Dept Phys & Elect, Sakai, Osaka 5998531, Japan
关键词
optical absorption and emission spectroscopy; liquid crystalline phase transitions; other conjugated and/or conducting polymers;
D O I
10.1016/S0379-6779(02)00543-X
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A study of polarized fluorescence of poly(9,9-dioctylfluorene) (PFO) thin films coated on polyimide (PI) alignment layers having different chemical structures has been reported. The orientational order parameters of aligned PFO thin films, prepared by cooling from the liquid crystalline phase, were evaluated by means of steady-state polarized fluorescence spectroscopy. The order parameters of the PFO thin films are found to be dependent on the chemical structures of PI layers. The polarized fluorescence spectra of aligned PFO thin films reveal that the excimer emission becomes more remarkable in the PFO thin films with higher order parameters.
引用
收藏
页码:295 / 296
页数:2
相关论文
共 5 条
[1]   High brightness and efficiency blue light-emitting polymer diodes [J].
Grice, AW ;
Bradley, DDC ;
Bernius, MT ;
Inbasekaran, M ;
Wu, WW ;
Woo, EP .
APPLIED PHYSICS LETTERS, 1998, 73 (05) :629-631
[2]   THE ORIENTATION OF POLYETHYLENE [J].
STEIN, RS .
JOURNAL OF POLYMER SCIENCE, 1959, 34 (127) :709-720
[3]  
STEIN RS, 1968, J POLYM SCI A, V2, P1975
[4]   Completely polarized photoluminescence emission from a microcavity containing an aligned conjugated polymer [J].
Virgili, T ;
Lidzey, DG ;
Grell, M ;
Walker, S ;
Asimakis, A ;
Bradley, DDC .
CHEMICAL PHYSICS LETTERS, 2001, 341 (3-4) :219-224
[5]   Highly polarized blue electroluminescence from homogeneously aligned films of poly(9,9-dioctylfluorene) [J].
Whitehead, KS ;
Grell, M ;
Bradley, DDC ;
Jandke, M ;
Strohriegl, P .
APPLIED PHYSICS LETTERS, 2000, 76 (20) :2946-2948