Synthesis and characterization of polysilabutane having oligo(oxyethylene)phenyl groups on the silicon atom

✍ Scribed by Kozo Matsumoto; Hironobu Shimazu; Hitoshi Yamaoka

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 166 KB
• Volume: 36
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/(sici)1099-0518(19980130)36:2<225::aid-pola3>3.0.co;2-q

✦ Synopsis

A new class of polar polysilabutanes with mono-or tri-(oxyethylene)phenyl groups on the silicon atom have been synthesized by anionic polymerization of silacyclobutanes having v-(t-butyldimethylsilyl-protected) mono-or tri-(oxyethylene)phenyl groups and subsequent deprotection of the silyl groups. The monomers were synthesized by treatment of 1,1-dichlorosilacyclobutane with v-(t-butyldimethylsilyl-protected) mono-or tri-(oxyethylene)phenyl Grignard reagents. Anionic polymerization of silacyclobutane was performed with butyllithium initiator in THF. t-Butyldimethylsilylprotecting groups at polymer pendant groups were hydrolyzed with tetrabutyl ammonium fluoride in water-containing THF. The obtained polysilabutanes were soluble in a polar organic solvent such as methanol, and their mass distributions were analysed by matrix-assisted laser-desorption-ionization mass spectrometry (MALDI TOF MS).