Self-assembly studies of a chiral bisurea-based superhydrogelator
Rodriguez-Llansola, F., Hermida-Merino, D., Nieto-Ortega, B., Ramirez, F. J., Lopez Navarrete, J. T., Casado, J., Hamley, I. W., Escuder, B., Hayes, W. and Miravet, J. F. (2012) Self-assembly studies of a chiral bisurea-based superhydrogelator. Chemistry - A European Journal, 18 (46). pp. 14725-14731. ISSN 1521-3765
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To link to this article DOI: 10.1002/chem.201200707
A chiral bisurea-based superhydrogelator that is capable of forming supramolecular hydrogels at concentrations as low as 0.2 mm is reported. This soft material has been characterized by thermal studies, rheology, X-ray diffraction analysis, transmission electron microscopy (TEM), and by various spectroscopic techniques (electronic and vibrational circular dichroism and by FTIR and Raman spectroscopy). The expression of chirality on the molecular and supramolecular levels has been studied and a clear amplification of its chirality into the achiral analogue has been observed. Furthermore, thermal analysis showed that the hydroACHTUNGTRENUNGgel- ACHTUNGTRENUNGation of compound 1 has a high response to temperature, which corresponds to an enthalpy-driven self-assembly process. These particular thermal characteristics make these materials easy to handle for soft-application technologies