PVME (purchased from Aldrich, supplied as 50 wt% aqueous solution; molecular weight determined by SEC in THF:Mw ¼ 60 500, Mw/Mny3; tacticity by 1H NMR: 59% of isotactic
diads [20]) was used after drying to prepare PVME/D2O(99.9% of deuterium) solutions.