Solvents and reagents were purchased from Merck (Italy) and they were used as received. High-purity Milli-Q water with a minimum resistivity of 18.2 MΩ ⋅ cm@25 °C was dispensed from a Milli-Q Academic System (Millipore RiOs/Origin purification system, St. Louis, MS, USA) and used to prepare all solutions and buffers. Peptide production, TEM, Raman spectroscopy, and oscillatory rheometry were carried out as previously described. Nanodiamonds production