Critical parameters for product quality and yield in the polymerisation of 3,3"-didodecyl-2,2′:5′,2"-terthiophene

被引:15
作者
Gallazzi, MC
Bertarelli, C
Montoneri, E
机构
[1] Politecn Milan, Dipartimento Chim Ind & Ingn Chim G Natta, I-20133 Milan, Italy
[2] Univ Turin, Dipartimento Chim Gen & Organ Applicata, I-10125 Turin, Italy
关键词
polythiophene; synthesis; molecular weight; solubility;
D O I
10.1016/S0379-6779(01)00665-8
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The yield and molecular weight of CHCl3 soluble poly(3,3"-didodecyl-2,2:5',2"-terthiophene) in the presence of FeCl3 were shown to depend strongly on quality and addition rate of the reagents, and on temperature, Best results were obtained by further drying commercial anhydrous FeCl3 and by slow addition of the reagents. Under these conditions the product molecular weight (M,,) and the yield of the CHCl3 soluble polymer were, respectively, 23 000-25 000 Da and 38-66%, and no insoluble polymer residue was obtained. Using raw commercial FeCl3 and/or adding the reagents all at once gave significant amounts of insoluble polymer fraction. Comparison with literature runs confirms that the polymerisation at 40 degreesC yields higher molecular weight product than at room temperature, and no insoluble polymer was still formed, provided that the above optimum reagents parameters were used. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:91 / 95
页数:5
相关论文
共 12 条
  • [1] Novel poly(3,3''- and 3',4'-dialkyl- 2.2':5',2''-terthiophene)s by chemical oxidative synthesis: Evidence for a new step towards the optimization of this process
    Andreani, F
    Salatelli, E
    Lanzi, M
    [J]. POLYMER, 1996, 37 (04) : 661 - 665
  • [2] SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF ALKYL OLIGOTHIOPHENES - THE 1ST ISOMERICALLY PURE DIALKYLSEXITHIOPHENE
    BAUERLE, P
    PFAU, F
    SCHLUPP, H
    WURTHNER, F
    GAUDL, KU
    CARO, MB
    FISCHER, P
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2, 1993, (03): : 489 - 494
  • [3] Fichou D., 1999, HDB OLIGO POLYTHIOPH
  • [4] REGIOSPECIFICITY AND STRUCTURAL-PROPERTIES OF POLYALKYLTHIOPHENES
    GALLAZZI, MC
    CASTELLANI, L
    ZERBI, G
    SOZZANI, P
    [J]. SYNTHETIC METALS, 1991, 41 (1-2) : 495 - 498
  • [5] Chromic effects and molecular weight in poly(3-alkylthiophenes)
    Gallazzi, MC
    Toscano, F
    Montoneri, E
    [J]. JOURNAL OF MATERIALS SCIENCE LETTERS, 1999, 18 (12) : 971 - 973
  • [6] REGIODEFINED SUBSTITUTED POLY(2,5-THIENYLENE)S
    GALLAZZI, MC
    CASTELLANI, L
    MARIN, RA
    ZERBI, G
    [J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 1993, 31 (13) : 3339 - 3349
  • [7] ENHANCED ORDER AND ELECTRONIC DELOCALIZATION IN CONJUGATED POLYMERS ORIENTED BY GEL PROCESSING IN POLYETHYLENE
    HAGLER, TW
    PAKBAZ, K
    VOSS, KF
    HEEGER, AJ
    [J]. PHYSICAL REVIEW B, 1991, 44 (16): : 8652 - 8666
  • [8] LAI YH, 1981, SYNTHESIS-STUTTGART, P585
  • [9] Search for conducting doped polymers with great chemical stability: Regiospecific poly(3,3''-dihexyl-2,2':5'3''-terthiophe)
    Magnoni, MC
    Gallazzi, MC
    Zerbi, G
    [J]. ACTA POLYMERICA, 1996, 47 (05) : 228 - 233
  • [10] MCCULLOUGH RD, 1999, HDB OLIGO POLYTHIOPH, P16