Odd–Even Effect on Rotational Dynamics of Spin-Labeled Polyacid Chain Segments in Polyelectrolyte Multilayers
Odd–Even Effect on Rotational Dynamics of Spin-Labeled Polyacid Chain Segments in Polyelectrolyte Multilayers
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聚电解质多层中自旋标记多酸链段旋转动力学的奇偶效应
DOI:
10.1021/acs.macromol.9b00101
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发表时间:
2019
期刊:
影响因子:
5.5
通讯作者:
Scheler
中科院分区:
文献类型:
--
作者:
Lappan;Scheler
A nitroxide spin label has been covalently attached to the weak polyelectrolyte poly(ethylene-alt-maleic acid) (P(E-alt-MA)) to study the rotational dynamics of the polyacid backbone in swollen polyelectrolyte multilayers (PEMs) formed by P(E-alt-MA) and the oppositely charged weak polycation poly(allylamine hydrochloide) (PAH) by continuous wave electron paramagnetic resonance (EPR) spectroscopy. The growth of the PEM film with increasing number of layers has been monitored by quantitative EPR using the spin-labeled polyanion (SL-P(E-alt-MA)) for the preparation of every polyanion layer. A parabolic growth has been found for PEMs with up to 16 layers. In further experiments the SL-P(E-alt-MA) has been placed in selected layers, and the line shape has been analyzed. A pronounced odd–even effect has been observed, i.e., the rotational dynamics of the P(E-alt-MA) backbone in the PEMs is influenced by the chemical nature of the polyelectrolyte in the terminating layer.
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DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
U. Lappan;Brigitte Wiesner;S. Zschoche;U. Scheler
通讯作者:
U. Scheler
影响因子:
5.5
作者:
Li Xu;D. Pristinski;A. Zhuk;C. Stoddart;J. Ankner;S. Sukhishvili
通讯作者:
Li Xu;D. Pristinski;A. Zhuk;C. Stoddart;J. Ankner;S. Sukhishvili
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
U. Lappan;Brigitte Wiesner;U. Scheler
通讯作者:
U. Scheler
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
P. Nestler;M. Paßvogel;H. Ahrens;O. Soltwedel;Ralf Köhler;C. Helm
通讯作者:
C. Helm
影响因子:
7.015
作者:
Xu L;Kozlovskaya V;Kharlampieva E;Ankner JF;Sukhishvili SA
通讯作者:
Sukhishvili SA