POLYMERIZATION OF 1-ARYL-2-TRIMETHYLSILYLACETYLENES BY TRANSITION-METAL CATALYSTS(II)

被引:15
作者
GAL, YS
CHOI, SK
KIM, CY
机构
[1] Korea Advanced Inst of Science &, Technology, Korea, Republic of
关键词
Aromatic Polymers--Spectroscopic Analysis - Chemical Reactions--Polymerization - Polymerization--Catalysts - Transition Metals--Catalysis;
D O I
10.1002/pola.1989.080270103
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Polymerization of 1-aryl-2-trimethylsilylacetylene (aryl = thienyl, furly, and pyridyl) was carried out by transition metal catalysts. The polymer yield was generally low due to the steric hindrance. R4Sn (R=Me, n-Bu, Ph) exhibits some cocatalytic activities with respect to polymer yield and molecular weight. On the other hand, the polymerization was decelerated when organoaluminum compounds were used as cocatalysts. The polymer yield increased in the following order: phenyl $GR thienyl $GR furyl $GR pyridyl, according to the aryl substituents. The NMR (1H- and 13C-), IR, and UV-visible spectra indicated that the resulting polymers have a linear conjugated polyene structure each containing the aromatic substituent and trimethylsilyl group. From 1H-NMR integration, it was found that the resulting polymers are partially desilylated depending on the substituents of monomer and the polymerization conditions. The solubility behavior, stability and fluoride-ion induced desilylation reaction of the polymers were also studied.
引用
收藏
页码:31 / 41
页数:11
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