Volume confinement induced microstructural transitions and property enhancements of supramolecular soft materials
Volume confinement induced microstructural transitions and property enhancements of supramolecular soft materials
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体积限制诱导超分子软材料的微观结构转变和性能增强
DOI：
10.1039/c0sm00873g
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发表时间：
2011-02
期刊：
影响因子：
3.4
通讯作者：
Xu, Hong-Yao
中科院分区：
文献类型：
--
作者：
Yuan, Bing;Liu, Xiang-Yang;Li, Jing-Liang;Xu, Hong-Yao
超分子软质功能材料的流变性能是由材料内部的网络结构决定的。该研究首次揭示了超分子软功能材料形成过程中的体积限制对材料流变性能的影响。以N-月桂酰-L-谷氨酸二正丁酰胺（GP-1）在乙二醇（EG）和丙二醇（PG）溶液中形成的一类小分子有机凝胶为模型体系，研究了其凝胶行为。结果表明，在受限空间内，凝胶的弹性比在非受限条件下的弹性提高15倍以上。根据我们的光学显微镜观察和流变学测量，这种急剧的增强是由一旦给定材料的纤维网络的平均尺寸达到系统的最低维度时从多域网络系统到单网络系统的结构转变引起的。从这项工作中获得的理解将提供一种新的策略来操纵软材料的网络结构，并在微米和纳米尺度上对这种超分子材料的微观工程产生直接影响。
The rheological properties of supramolecular soft functional materials are determined by the networks within the materials. This research reveals for the first time that the volume confinement during the formation of supramolecular soft functional materials will exert a significant impact on the rheological properties of the materials. A class of small molecular organogels formed by the gelation of N-lauroyl-L-glutamic acid din-butylamide (GP-1) in ethylene glycol (EG) and propylene glycol (PG) solutions were adopted as model systems for this study. It follows that within a confined space, the elasticity of the gel can be enhanced more than 15 times compared with those under un-restricted conditions. According to our optical microscopy observations and rheological measurements, this drastic enhancement is caused by the structural transition from a multi-domain network system to a single network system once the average size of the fiber network of a given material reaches the lowest dimension of the system. The understanding acquired from this work will provide a novel strategy to manipulate the network structure of soft materials, and exert a direct impact on the micro-engineering of such supramolecular materials in micro and nano scales.
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DOI：
10.1021/jp054531r
发表时间：
2006-04
期刊：
The journal of physical chemistry. B
影响因子：
--
作者：
Rongyao Wang;Xiang‐Yang Liu;J. Xiong;Jingliang Li
通讯作者：
Rongyao Wang;Xiang‐Yang Liu;J. Xiong;Jingliang Li
DOI：
10.1021/jp070600l
发表时间：
2007-05
期刊：
The journal of physical chemistry. B
影响因子：
--
作者：
J. Xiong;Xiang‐Yang Liu;Jingliang Li;Martin Vallon
通讯作者：
J. Xiong;Xiang‐Yang Liu;Jingliang Li;Martin Vallon
影响因子：
4
作者：
Jingliang Li;Xiang‐Yang Liu
通讯作者：
Jingliang Li;Xiang‐Yang Liu
影响因子：
3.3
作者：
Xiong, JY;Liu, XY;Chung, TS
通讯作者：
Chung, TS
影响因子：
4
作者：
Liu, XY;Sawant, PD
通讯作者：
Sawant, PD