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Molecular Dynamics of Podand Studied by Broadband Dielectric and Nuclear Magnetic Resonance Spectroscopies
Author(s) -
Orozbaev Bakyt,
Fojud Zbigniew,
MakrockaRydzyk Monika,
Schroeder Grzegorz,
Jurga Stefan
Publication year - 2007
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200700197
Subject(s) - relaxation (psychology) , dielectric , chemistry , nuclear magnetic resonance , dynamics (music) , spin–lattice relaxation , molecular dynamics , nuclear magnetic resonance spectroscopy , rotation around a fixed axis , broadband , chemical physics , materials science , computational chemistry , physics , optoelectronics , optics , stereochemistry , psychology , social psychology , classical mechanics , acoustics , nuclear quadrupole resonance
Nuclear magnetic resonance (NMR) and broadband dielectric spectroscopies (BDS) were used to analyze the molecular dynamics in P10.3H Podand. The temperature studies of NMR line and magnetic spin–lattice relaxation times accompanied by DS investigation enabled us to distinguish three main dynamical processes connected with the motions of the P10.3H Podand chains. In the low‐temperature region the magnetic relaxation was associated with fast axial C 3 rotation of methyl groups. Moreover, two other independent processes were observed and interpreted as (i) segmental motion of both oxyethylene and ethylene units, and (ii) the overall motion involved in the melting process.