Linear dependence of the water proton transverse relaxation rate on the shear modulus of hydrogelsElectronic supplementary information (ESI) available: Peptide synthesis and purification, HPLC and Mass Spectroscopy analysis, sample preparation, NMR and rheology experiments. See DOI: 10.1039/c4cc04717f

It is found that hydrogelation of peptides enhances the transverse relaxation rate R 2 of water protons but has no effect on the longitudinal relaxation rate R 1 and the diffusion coefficient D . The magnitude of water proton R 2 enhancement increases linearly with the shear modulus G of hydrogels. It is found that hydrogelation of peptides enhances the transverse relaxation rate R 2 of water protons, and the magnitude of such R 2 enhancement increases linearly with the shear modulus G of hydrogels.