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Covalently Trapped Triarylamine‐Based Supramolecular Polymers
Author(s) -
Liang Ting,
Collin Dominique,
Galerne Melodie,
Fuks Gad,
Vargas Jentzsch Andreas,
Maaloum Mounir,
Carvalho Alain,
Giuseppone Nicolas,
Moulin Emilie
Publication year - 2019
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.201902404
Subject(s) - supramolecular polymers , supramolecular chemistry , polymerization , covalent bond , polymer , materials science , norbornene , metathesis , stacking , polymer chemistry , nanotechnology , crystallography , chemistry , organic chemistry , composite material , crystal structure
C 3 ‐Symmetric triarylamine trisamides (TATAs), decorated with three norbornene end groups, undergo supramolecular polymerization and further gelation by π–π stacking and hydrogen bonding of their TATA cores. By using subsequent ring‐opening metathesis polymerization, these physical gels are permanently crosslinked into chemical gels. Detailed comparisons of the supramolecular stacks in solution, in the physical gel, and in the chemical gel states, are performed by optical spectroscopies, electronic spectroscopies, atomic force microscopy, electronic paramagnetic resonance spectroscopy, X‐ray scattering, electronic transport measurements, and rheology. The results presented here clearly evidence that the core structure of the functional supramolecular polymers can be precisely retained during the covalent capture whereas the mechanical properties of the gels are concomitantly improved, with an increase of their storage modulus by two orders of magnitude.