TY - JOUR
T1 - IR spectra and hydration of short-chain polyethyleneglycols
AU - Rozenberg, M.
AU - Loewenschuss, A.
AU - Marcus, Y.
PY - 1998/10
Y1 - 1998/10
N2 - IR spectra of pure polyethyleneglycol PEG-200, PEG-400, monomethylether of PEG-350, dimethyl ether of PEG-250, several related compounds and water solutions in PEG-200 were recorded in the range of the skeletal band at 1100 cm-1. The observed structured band in pure liquid PEGs and solutions was deconvoluted into five components shown to be due to non-interacting vibrations. The component near 1068 cm-1 is mainly due to the (C-OH) group and the 1104 and 1127 cm-1 components to the (C-O-C) groups. Of these the former is free or in the trans conformation and the latter is involved in an intramolecular H-bond or gauche conformation relative to the C-C bond. The changes band component parameters in PEG-200, on addition of small amounts of water, are ascribed to the attachment of the first water molecules to the terminal OH-group hydrogen bond system of the PEG molecule.
AB - IR spectra of pure polyethyleneglycol PEG-200, PEG-400, monomethylether of PEG-350, dimethyl ether of PEG-250, several related compounds and water solutions in PEG-200 were recorded in the range of the skeletal band at 1100 cm-1. The observed structured band in pure liquid PEGs and solutions was deconvoluted into five components shown to be due to non-interacting vibrations. The component near 1068 cm-1 is mainly due to the (C-OH) group and the 1104 and 1127 cm-1 components to the (C-O-C) groups. Of these the former is free or in the trans conformation and the latter is involved in an intramolecular H-bond or gauche conformation relative to the C-C bond. The changes band component parameters in PEG-200, on addition of small amounts of water, are ascribed to the attachment of the first water molecules to the terminal OH-group hydrogen bond system of the PEG molecule.
KW - Hydrogen bonds
KW - IR spectra
KW - Polyethyleneglycol
KW - Water
UR - http://www.scopus.com/inward/record.url?scp=0346224742&partnerID=8YFLogxK
U2 - 10.1016/S1386-1425(98)00062-6
DO - 10.1016/S1386-1425(98)00062-6
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AN - SCOPUS:0346224742
SN - 1386-1425
VL - 54
SP - 1819
EP - 1826
JO - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
JF - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
IS - 12
ER -