標題: Synthesis and light emitting properties of polyacetylenes having pendent fluorene groups
作者: Huang, CH
Yang, SH
Chen, KB
Hsu, CS
應用化學系
Department of Applied Chemistry
關鍵字: fluorescence;light-emitting diodes (LED);photoluminescence;polyacetylene
公開日期: 1-一月-2006
摘要: Five novel fluorene-containing polymers, poly[(9,9-dimethylfluoren-2-yl)acetylenel (PFA1), poly[(1-pentyl-2-(9,9-dimethylfluoren-2-yl)acetylene) (PFA2), poly[1-decyl-2-(9,9-dimethylfluoren-2-yl)acetylene] (PFA3), poly[1-phenyl-2-(9,9-dimethylfluoren-2-yl)acetylenel (PFA4), and poly[1-(3,4-difluorophenyl)-2-(9,9-dimethylfluoren-2yl)acetylene] (PFA5) were synthesized by the polymerization of the corresponding fluorene-substituted acetylenic monomers (M1-M5), using WCl6, MoCl5, and TaCl5 as catalysts and n-Bu4Sn as a cocatalyst. The synthesized polymers were thermally stable and readily soluble in common organic solvents. The degradation temperatures for a 5% weight loss of the polymers were similar to 352-503 degrees C under nitrogen. PFA1-PFA5 show emission peaks from 402 to 590 nm. Besides, their electroluminescent properties were studied in heterostructure light-emitting diodes (LEDs), using PFA2-PFA5 as an emitting layer. The PFA5 device revealed an orange-red emission peak at 602 nm with a maximum luminescence of 923 cd/m(2) at 8 V. A device with the ITO/PEDOT/ a mixture of PFA2 (98 wt %) and PFA5 (2 wt %)/Ca/Al showed near white emission. Its maximum luminance and current efficiency are 450 cd/m(2) at 15 V and 1.3 cd/A, respectively. 0 2005 Wiley Periodicals, Inc.
URI: http://dx.doi.org/10.1002/pola.21163
http://hdl.handle.net/11536/12795
ISSN: 0887-624X
DOI: 10.1002/pola.21163
期刊: JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
Volume: 44
Issue: 1
起始頁: 519
結束頁: 531
顯示於類別:期刊論文


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  1. 000234091800051.pdf