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《高分子科学(英文版)》 2016-01
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Effect of Flexible Units on the Properties of Silicon-containing Phenyleneethynylene Hybrid Oligomers

Xian-kai Lin;Rui Wang;Fan Zeng;Shu-hong Li;Cai-hong Xu;School of Science, Beijing Technology and Business University;Institute of Chemistry, Chinese Academy of Sciences;  
New silicon-containing phenyleneethynylene hybrid oligomers P2, P3, and P4 were synthesized via Sonogashira cross-coupling reactions of ethynyl-terminated silazane monomer N,N′-bis(4-ethynylphenyl)-1,1-diphenylsilazane(M1) and corresponding bis-(4-bromo-phenyl)-ended organosilicon unit containing monomers, respectively. These new oligomers were easily soluble in common solvents. The incorporation of flexible organosilicon units in the oligomers leads to blue-shift in both the UV-Vis absorption and fluorescence emission spectra similarly. The results of differential scanning calorimetry(DSC) indicate that the flexible units relieve the rigidity of oligomeric chain and provide favorable conformation for thermal cross-linking reactions. The oligomers show good thermal and thermal-oxidative stability from the thermogravimetric analysis(TGA), with their decomposition temperature at 10% weight loss(T10%) higher than 400 ?C under both nitrogen and air atmosphere.
【Fund】: financially supported by the National Natural Science Foundation of China(Nos.50673094 and 20774102)
【CateGory Index】: TQ317
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Chinese Journal Full-text Database 3 Hits
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Chinese Journal Full-text Database 2 Hits
1 Xi-qi Zhang;Xiao-yong Zhang;Bin Yang;Yan Wei;Department of Chemistry and Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology(Ministry of Education),Tsinghua University;;Facile Fabrication of Aggregation-induced Emission Based Red Fluorescent Organic Nanoparticles for Cell Imaging[J];高分子科学(英文版);2014-07
2 WANG Qiang;YUAN Qiao-long;HUANG Fa-rong;Key Laboratory for Specially Functional Polymeric Materials and Related Technology (East China University of Science and Technology),Ministry of Education;;Synthesis and properties of a block copolymer of silane-arylacetylene with Si-H group[J];Thermosetting Resin;2014-06
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