Synthesis and characterization of alternating copolymers of fluorene and oxadiazole

被引:160
作者
Ding, JF [1 ]
Day, M [1 ]
Robertson, G [1 ]
Roovers, J [1 ]
机构
[1] Natl Res Council Canada, Inst Chem Proc & Environm Technol, Ottawa, ON K1A 0R6, Canada
关键词
D O I
10.1021/ma011093n
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Alternating copolymers of 9,9-dioctylfluorene and oxadiazole have been prepared by the tetrazole route or the Suzuki coupling reaction. In the polymers the oxadiazole units were evenly dispersed in the main chain at every one, P(F-1-alt-Ox), three, P(F-3-alt-Ox), or four, P(F-4-alt-OX), fluorene units. Another copolymer with an asymmetric repeat unit structure, P(F-3-Ox-F-1-Ox) has also been prepared for comparison. In this study, the tetrazole route has been demonstrated to offer several advantages for preparing polyoxadiazole with well-defined structures compared to other oxadiazole ring formation reactions. These advantages include: clean and fast reactions, mild reaction conditions, high yields, and high molecular masses of product. The glass transition temperature of copolymers ranged from 98 to 150 degreesC, and the copolymers show high thermal stability with decomposition temperatures around 430 degreesC. The UV-vis absorption and photoluminescence properties of all the copolymers in solutions are similar to those of poly(9,9-dioctylfluorene). All copolymers fluoresce in the blue-light range with quantum yields of similar to70% in CH2Cl2 solution.
引用
收藏
页码:3474 / 3483
页数:10
相关论文
共 90 条
[1]  
ABSHIRE CJ, 1961, MAKROMOLEKUL CHEM, V44-6, P388
[2]   Photoluminescence and electroluminescence of films from soluble PPV-polymers [J].
Andersson, MR ;
Yu, G ;
Heeger, AJ .
SYNTHETIC METALS, 1997, 85 (1-3) :1275-1276
[3]  
[Anonymous], HDB CONDUCTIVE POLYM
[4]   Polymer light emitting diodes: new materials and devices [J].
Bao, Z ;
Rogers, JA ;
Dodabalapur, A ;
Lovinger, AJ ;
Katz, HE ;
Raju, VR ;
Peng, Z ;
Galvin, ME .
OPTICAL MATERIALS, 1999, 12 (2-3) :177-182
[5]   Efficient synthesis of starburst oxadiazole compounds [J].
Bettenhausen, J ;
Strohriegl, P .
ADVANCED MATERIALS, 1996, 8 (06) :507-+
[6]   Dendrimers with 1,3,4-oxadiazole units .1. Synthesis and characterization [J].
Bettenhausen, J ;
Strohriegl, P .
MACROMOLECULAR RAPID COMMUNICATIONS, 1996, 17 (09) :623-631
[7]   Solvent effect on absolute fluorescence quantum yield of rhodamine 6G determined using transient thermal lens technique [J].
Bindhu, CV ;
Harilal, SS ;
Nampoori, VPN ;
Vallabhan, CPG .
MODERN PHYSICS LETTERS B, 1999, 13 (16) :563-576
[8]  
Blom PWM, 1998, POLYM ADVAN TECHNOL, V9, P390, DOI 10.1002/(SICI)1099-1581(199807)9:7<390::AID-PAT795>3.0.CO
[9]  
2-9
[10]   ELECTROLUMINESCENCE AND ELECTRICAL TRANSPORT IN POLY(3-OCTYLTHIOPHENE) DIODES [J].
BRAUN, D ;
GUSTAFSSON, G ;
MCBRANCH, D ;
HEEGER, AJ .
JOURNAL OF APPLIED PHYSICS, 1992, 72 (02) :564-568