Novel monodisperse PEG-grafted polystyrene resins: synthesis and application in gel-phase C NMR spectroscopy |
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| Authors: | Christian Braunshier,Johannes Frö hlich,Herbert Hutter |
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| Affiliation: | a Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9/163, A-1060 Vienna, Austria
b Institute of Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9/164, A-1060 Vienna, Austria |
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| Abstract: | 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. |
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| Keywords: | Solid-phase organic synthesis NMR spectroscopy PS-PEG graft copolymers TOF-SIMS |
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