Table 2.
Composition and conductivity (Λ) of peptide solutions and ionic strength of the hydrogels.a
| Hydrogels | Gel-1 (0.1 M) |
Gel-2 (0.2 M) |
Gel-3 (0.6 M) |
Gel-4 (1.1 M) |
Gel-5 (2.1 M) |
|||||
|---|---|---|---|---|---|---|---|---|---|---|
| Gelator sol. | A-1 | B-1 | A-2 | B-2 | A-3 | B-3 | A-4 | B-4 | A-5 | B-5 |
| E11 (mM) | 16 | 0 | 16 | 0 | 16 | 0 | 16 | 0 | 16 | 0 |
| K11 (mM) | 0 | 16 | 0 | 16 | 0 | 16 | 0 | 16 | 0 | 16 |
| NaCl (M) | 0 | 0 | 0.1 | 0.1 | 0.5 | 0.5 | 1.0 | 1.0 | 2.0 | 2.0 |
| Λ (mS·cm−1) | 8.8 | 8.7 | 15.9 | 16.0 | 41.0 | 40.9 | 76.2 | 75.9 | 122.7 | 122.5 |
a
Hydrogel Gel-i is made by mixing two peptide solutions A-i and B-i (i = 1, 2, 3, 4, and 5). In addition to the peptide and NaCl, each peptide solution also contains 8 mM tfF and 50 mM sodium phosphate. The conductivity of each peptide solution was measured by a conductivity meter at r.t; the ionic strength of each hydrogel (in the parentheses) was calculated using Eqn. 1.