期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 22, 期 32, 页码 11269-11282出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201600670
关键词
gels; green chemistry; ionic liquids; organic salts; supramolecular gels
资金
- MIUR [FIRB 2010RBFR10BF5V]
- US National Science Foundation [CHE-1147353, 1502856]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1502856] Funding Source: National Science Foundation
Insights are provided into the properties of molecular gels formed by diimidazolium salts both in normal solvents and ionic liquids. These materials can be interesting for applications in green and sustainable chemistry in which ionic liquids play a significant role, like catalysis and energy. In particular, two positional isomers of a diimidazolium cation have been examined with a wide range of anions for their ability to form gel phases. In particular, di-, tri-, and tetravalent anions bearing aliphatic or aromatic spacers were paired with the divalent cations. The properties of the organo- and ionogels formed have been analyzed by means of several different techniques, including calorimetry, rheology, resonance light scattering, UV/Vis absorption, polarizing optical microscopy, and powder X-ray diffraction measurements. The investigations performed enabled us to obtain a wide range of conductive materials characterized by a high thermal stability and a low corrosiveness of the gelator (organogels) or of both gelator and solvent (ionogels). The information gained should be useful in the broader quest to identify and promote their applications.
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