Heterobifunctional Poly(ethylene oxide) Oligomers Containing Carboxylic Acids
2008; American Chemical Society; Volume: 9; Issue: 3 Linguagem: Inglês
10.1021/bm701067d
ISSN1526-4602
AutoresMichael L. Vadala, Michael S. Thompson, M.A. Ashworth, Yi‐Rung Lin, T. P. Vadala, R Ragheb, Judy S. Riffle,
Tópico(s)Dendrimers and Hyperbranched Polymers
ResumoSyntheses of vinylsilyl alcohols having one to three vinyl moieties and their use as initiators for ethylene oxide polymerizations are discussed. Poly(ethylene oxide) oligomers with vinylsilanes at one end and a hydroxyl group at the other were prepared in base-catalyzed reactions. Molecular weights determined from 1H NMR and gel permeation chromatography were close to the targeted values. Carboxylic acid functional poly(ethylene oxide) oligomers were prepared from ene−thiol addition reactions of mercaptoacetic acid across the vinylsilane terminus. It is anticipated that these carboxylic acid functional oligomers will complex to magnetite nanoparticles to afford complexes that can be dispersed in aqueous media.
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