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Open AccessFeature PaperArticle

On the Mechanical Properties of N-Functionalised Dipeptide Gels

School of Chemistry, University of Glasgow, Glasgow G12 8QQ, UK
Rutherford Appleton Laboratory, ISIS Pulsed Neutron Source, Didcot OX11 0QX, UK
Author to whom correspondence should be addressed.
Academic Editor: Francesca D’Anna
Molecules 2019, 24(21), 3855;
Received: 20 September 2019 / Revised: 21 October 2019 / Accepted: 21 October 2019 / Published: 25 October 2019
(This article belongs to the Special Issue Supramolecular Gel)
The properties of a hydrogel are controlled by the underlying network that immobilizes the solvent. For gels formed by the self-assembly of a small molecule, it is common to show the primary fibres that entangle to form the network by microscopy, but it is difficult to access information about the network. One approach to understand the network is to examine the effect of the concentration on the rheological properties, such that G′∝ cx, where G′ is the storage modulus and c is the concentration. A number of reports link the exponent x to a specific type of network. Here, we discuss a small library of gels formed using functionalized dipeptides, and describe the underlying networks of these gels, using microscopy, small angle scattering and rheology. We show that apparently different networks can give very similar values of x. View Full-Text
Keywords: gel; hydrogel; dipeptide; rheology; SANS; fibre; network gel; hydrogel; dipeptide; rheology; SANS; fibre; network
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Fuentes-Caparrós, A.M.; McAulay, K.; Rogers, S.E.; Dalgliesh, R.M.; Adams, D.J. On the Mechanical Properties of N-Functionalised Dipeptide Gels. Molecules 2019, 24, 3855.

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