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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Macromolecular Rapid Communications 19 (1998), S. 359-366 
    ISSN: 1022-1336
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Polystyrene and polymethacrylate with 3,4,5-tris[4-(tetradecyloxy)benzyloxy]benzoic acid and 3,4,5-tris[3,4,5-tris(dodecyloxy)benzyloxy]benzyl alcohol side groups, respectively, were visualized by scanning force microscopy (SFM). The cylindrical molecules did not interpenetrate and their chain ends could be resolved in the images allowing quantitative evaluation of their length distribution. Whereas the polymethacrylate with the sterically most demanding side groups demonstrated a fairly good agreement between the SFM length and the calculated contour length, the polystyrene with the less branched substituent appeared to be at least two times shorter. The reduced length of the polymer chains was attributed to a disordered helixlike conformation.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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