Silicon-Phthalocyanine Siloxane Polymers: Synthesis and (1)H Nuclear Magnetic Resonance Study.
CASE WESTERN RESERVE UNIV CLEVELAND OHIO
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The reaction of silicon Phthalocyanine PcSi disilanols with bisureidodimethylsilane and bisureidosiloxanes yields blue PcSi-siloxane polymers of the general formula PcSiOSiMePhOSiMe2n OSiMePhO, where Memethyl, Phphenyl and n2IV, 3V and 4VI. Reactions which lead to polymers V and VI have been studied via nuclear magnetic resonance spectroscopy. The dominant shielding effect of the Pc ring which causes clear separation of methyl groups in adjacent siloxane chains facilitated this study. Polymers IV and V have been prepared from PcSiOSiMePhOH2 and appropriate bisureido-siloxanes. Polymer V was considerably more soluble in organic solvents than polymer IV. Polymer V melted at ca. 65-70 degrees, while polymer IV softened at ca. 100 degrees Tg but did not melt. Molecular weights for IV1400 and V 1200 have been estimated from their nmr spectra. Author
- Polymer Chemistry