Metal-induced gelation in dipyridyl ureas

被引：99
|
作者：
Byrne, Peter [1 ]
Lloyd, Gareth O. [1 ]
Applegarth, Lucas [1 ]
Anderson, Kirsty M. [1 ]
Clarke, Nigel [1 ]
Steed, Jonathan W. [1 ]
机构：
[1] Univ Durham, Dept Chem, Durham DH1 3LE, England
来源：
NEW JOURNAL OF CHEMISTRY | 2010年 / 34卷 / 10期
基金：
英国工程与自然科学研究理事会;
关键词：
ANION-BINDING; INFRARED TEMPERATURE; DICARBOXYLIC-ACID; GEL FIBERS; GELATORS; COORDINATION; ORGANOGELS; DERIVATIVES; COMPLEXES; SYNTHON;
D O I：
10.1039/c0nj00278j
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A series of pyridyl-appended bis(urea) ligands form supramolecular gels in the presence of metal ions (metallogels), particularly copper(II) and silver(I). The gels have been characterised by rheometry and SEM, and the effect of the metal ions on gel strength and morphology examined. The metal-induced gelation is linked to the competition between urea-urea and urea-pyridyl hydrogen bonding interactions. Crystals grown from these gels reveal a wealth of structural information about these systems that can be related to gel structure using powder X-ray diffraction data of their xerogels.
引用
收藏
页码：2261 / 2274
页数：14
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