Annealing multicomponent supramolecular gels
Metadatos
Afficher la notice complèteEditorial
Royal Society of Chemistry
Date
2019Referencia bibliográfica
Fuentes-Caparrós, A. M., de Paula Gómez-Franco, F., Dietrich, B., Wilson, C., Brasnett, C., Seddon, A., & Adams, D. J. (2019). Annealing multicomponent supramolecular gels. Nanoscale, 11(7), 3275-3280.
Patrocinador
AMFC thanks the University of Glasgow for funding. FPGF acknowledges an Erasmus traineeship. DJA thanks the EPSRC for a Fellowship (EP/L021978/1), which funded BD. MarvinSketch 16.11.28.0 was used for naming chemical structures. This work benefitted from SasView software, originally developed by the DANSE project under NSF award DMR-0520547. SasView also contains code developed with funding from the EU Horizon 2020 programme under the SINE2020 project Grant No. 654000. The X-ray scattering apparatus was purchased under (EP/K035746/1).Résumé
Annealing is widely used as a means of changing the physical properties of a material. The rate of heating
and cooling used in the annealing process controls the final properties. Annealing can be used as a means
of driving towards the, or at least a, thermodynamic minimum. There is surprisingly little information on
annealing kinetically-trapped supramolecular gels. Here, we show that annealing multicomponent gels can
be used to prepare materials with tunable mechanical properties. We show that annealing in a two-component
gel leads to a self-sorted network, which has significantly different mechanical properties to the asprepared
gels. Whilst the fibres are self-sorted, we show that the annealing of this system leads to significant
change in the network level of assembly, and it is this that leads to the increase in storage modulus. We also
show that it is possible to selectively anneal only a single component in the mixture