Macromolecular Chemistry and Physics · 2001 · 54 citations · 0 references
Natural SciencesChemistryMaterials ScienceFunctional MaterialsOrganic ChemistryPolymer ChemistryPolymer CharacterizationPolymer FunctionalizationPolymer StructurePolymer SynthesisPolymerization ChemistryPolymerization ProcessesFluorescence Spectroscopy AnalysisIsotactic PolymerizationMolecular Fluorescence SpectroscopyMolecular Simulation AnalysisSilane CouplingSteric BulkTacticityX-ray Diffraction Analysis
A novel kind of soluble ladderlike poly(phenylsilsesquioxane) (LPPS) was prepared by stepwise coupling polymerization. Various techniques, such as fluorescence spectroscopy, X-ray diffraction (XRD), molecular simulation and calculation, were combined to indicate that the steric structure in LPPS was predominantly cis-isotactic. It is anticipated that stepwise coupling polymerization is a useful synthetic method for preparing ladderlike poly(silsesquioxane)s with cis-isotactic structure, which have potential applications as functional polymers or as precursors for the further synthesis of novel advanced polymers.