Organogelation by polymer organogelators with a L-lysine derivative: formation of a three-dimensional network consisting of supramolecular and conventional polymers.
Organogelation by polymer organogelators with a L-lysine derivative: formation of a three-dimensional network consisting of supramolecular and conventional polymers.
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DOI：
10.1002/chem.200700146
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发表时间：
2007-10
期刊：
影响因子：
--
通讯作者：
Masahiro Suzuki;C. Setoguchi;H. Shirai;K. Hanabusa
中科院分区：
文献类型：
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作者：
Masahiro Suzuki;C. Setoguchi;H. Shirai;K. Hanabusa
合成了由L-赖氨酸衍生物和常规聚合物（如聚（乙二醇）、聚碳酸酯、聚酯和聚（亚烷基））组成的聚合物化合物，并在各种溶剂中检查了它们的有机物性质。这些聚合物化合物用作在许多有机溶剂和油中形成有机凝胶的良好有机胶凝剂。聚合物的有机接枝能力几乎与聚合物主链无关。通过场发射扫描电子显微镜（FE-SEM）观察表明，聚合物有机凝胶因子形成的超分子聚合物的直径为几十纳米，并创建一个三维网络的有机凝胶。红外光谱分析表明，该超分子聚合物主要是由L-赖氨酸链段通过氢键和货车范德华力自组装而成。此外，由聚合物有机凝胶因子形成的有机凝胶具有比低分子量模型有机凝胶因子更低的凝胶-溶胶温度和更高的凝胶强度。
Polymer compounds consisting of a L-lysine derivative and conventional polymers, such as poly(ethylene glycol), polycarbonate, polyesters, and poly(alkylene), have been synthesized and their organogelation properties examined in various solvents. These polymer compounds function as good organogelators that form organogels in many organic solvents and oils. The organogelation ability is almost independent of the polymer backbone. Observation by field-emission scanning electron microscopy (FE-SEM) demonstrates that the polymer organogelators form a supramolecular polymer with a diameter of several tens of nanometers and create a three-dimensional network in organogels. FT-IR spectroscopic analysis shows that the supramolecular polymer is mainly formed by the self-assembly of L-lysine segments through hydrogen-bonding and van der Waals interactions. Furthermore, the organogels formed by the polymer organogelators have a lower gel-sol temperature and higher gel strength than those of a low-molecular-weight model organogelator.