Table 1.
Summary of the conditions and properties of the hydrogelators based on nucleobases, Arg-Gly-Asp (RGD) peptides, and glucosamine and corresponding supramolecular nanofibers and hydrogels
| Sample | 1T | 1A | 1C | 1G | 2T | 2A | 2C | 2G |
|---|---|---|---|---|---|---|---|---|
| wt % | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 |
| pH | 4.0 | 7.4 | 4.0 | 7.4 | 4.0a | 4.0 | 4.0 | 4.0a |
| Morphologies of nanostructure | single fibers ribbons, helical fibers | ribbons, bundles | single fibers, double parallel fibers, double helical fibers | fiber with different lengths, bundles | – | fibers, bundle of fibers | fibers, bundles, helical ribbons | single fibers, bundles |
| Width of nanofibers (nm) | 15 | 15 | 10 | 12 | – | 7 | 10 | 6 |
| Critical strain (%) | 0.5 | 0.8 | 0.5 | 0.8 | – | 0.6 | 0.6 | – |
| G′ (kPa) | 35 | 17 | 2.3 | 2.1 | – | 6 | 2.4 | – |
| Biostability (compound remained (%) after 24 hrs) | 45 | 52 | 37 | 50 | 0 | 0 | 0 | 4 |
a
These compounds fail to result in hydrogels from acidic to basic conditions.