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Self‐Assembly Studies of a Chiral Bisurea‐Based Superhydrogelator
Author(s) -
RodríguezLlansola Francisco,
HermidaMerino Daniel,
NietoOrtega Belén,
Ramírez Francisco J.,
Navarrete Juan T. López,
Casado Juan,
Hamley Ian W.,
Escuder Beatriu,
Hayes Wayne,
Miravet Juan F.
Publication year - 2012
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201200707
Subject(s) - circular dichroism , chirality (physics) , transmission electron microscopy , supramolecular chemistry , supramolecular chirality , materials science , raman spectroscopy , self assembly , fourier transform infrared spectroscopy , crystallography , enthalpy , self healing hydrogels , thermal analysis , nanotechnology , chemistry , thermal , polymer chemistry , optics , crystal structure , physics , chiral symmetry , thermodynamics , quantum mechanics , nambu–jona lasinio model , quark
A chiral bisurea‐based superhydrogelator that is capable of forming supramolecular hydrogels at concentrations as low as 0.2 m M 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 hydrogelation 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.