Novel monodisperse PEG-grafted polystyrene resins: synthesis and application in gel-phase ¹³C NMR spectroscopy

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• 作者：Christian Braunshier ; Christian Hametner ; Johannes Frö ; hlich ; Johannes Schnö ; ller ; Herbert Hutter
• 关键词：Solid-phase organic synthesis ; NMR spectroscopy ; PS-PEG graft copolymers ; TOF-SIMS
• 刊名：Tetrahedron Letters
• 出版年：2008
• 出版时间：8 December 2008
• 年：2008
• 卷：49
• 期：50
• 页码：7103-7105
• 全文大小：337 K

文摘

A series of novel polystyrene-oligo(oxyethylene) graft copolymers containing monodisperse PEG units (n = 2–12) have been synthesized and examined concerning their applicability for gel-phase ¹³C NMR spectroscopy. A strong correlation between the graft length and the line widths in the gel-phase spectra was observed. By grafting a PEG chain with only eight units, it was possible to obtain results similar to TentaGel resin. Additionally, TOF-SIMS images were recorded in order to evaluate the homogeneity of the resin.