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Hydrogen‐Bonding‐Directed Template Synthesis of Novel Stereo‐Regular Organo‐Bridged Ladder‐Like Polymethylsiloxane
Author(s) -
Tang Huadong,
Sun Jin,
Zhou Xiaoshu,
Fu Pengfei,
Xie Ping,
Zhang Rongben
Publication year - 2003
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200290065
Subject(s) - hydrosilylation , monomer , hydrogen bond , polymer , polymer chemistry , chemistry , differential scanning calorimetry , proton nmr , crystallography , supramolecular chemistry , materials science , molecule , stereochemistry , organic chemistry , crystal structure , catalysis , physics , thermodynamics
Abstract A novel stereo‐regular organo‐bridged ladder‐like polymethylsiloxane ( LPMS ) was synthesized by a stepwise coupling polymerization on the basis of an amido H‐bonding‐assisted self‐assembling template. The monomer N,N′ ‐bis{4‐[3‐(diethoxymethylsilyl)propoxy]‐phenyl}terephthalamide ( M ), prepared by hydrosilylation reaction at high temperature, was hydrolyzed in a dilute solution at a low temperature to form a ladder‐like supramolecular intermediate through amido H‐bonding interactions, which was further condensed to form the polymer LPMS . A combination of techniques including 1 H NMR, 29 Si NMR, and FT‐IR spectroscopies X‐ray diffraction (XRD), and differential scanning calorimetry (DSC) were used to characterize the titled polymer LPMS , and the results indicate that the polymer possesses an ordered ladder‐like structure.29 Si NMR spectrum of the polymer LPMS .